Changelog

• FixedFix TypeError when adding a passkey to an account with legacy credentials.
• NewThe site has a new address and old page links redirect automatically. Sign in again and add a new passkey on your first visit.
• ImprovedSteelCopilot now presents member review, model checks, and fabrication and erection teamwork on its refreshed homepage, with updated Chinese branding.

• FixedNameplates are prebuilt when label data is ready, including offscreen members, without waiting for camera movement.
• NewNameplates stay fixed on opposite member surfaces, so orbiting reveals the other label without regenerating its placement.
• FixedSurface nameplates are now the default and refresh their placement after view changes to reduce missing labels.
• NewComponent marks can now appear as surface nameplates on steel sections and round tubes
• NewSearch models by username or display name
• NewIFC uploads now show an export checklist for grids, assemblies, part numbers, properties and quantities, fasteners, and storeys, with feature impacts and export guidance.
• ImprovedAutomatically use Chinese drawing classification when supported by model evidence, including GKZ columns and GKL beams.
• NewPart drawings can infer bolt holes in verified straight angle legs and explain rejected holes; source drawing review is still required.
• FixedRecognize Chinese component marks ending in zero to avoid missing columns and crane beams.
• NewPart drawings can infer holes in verified straight I-section webs, with source records and rejection reasons; for checking only.
• NewComponent filters now offer Chinese drawing classification, including region and floor prefixes, using names and profiles to distinguish steel columns, beams, purlins and ties while keeping uncertain components separate
• FixedShow inferred holes and provenance on solid rectangular extrusions and restore hole-position selection
• FixedKeep model health standards visible with an upgrade prompt when locked.
• NewPart drawings now show hole provenance and check records, including inferred holes, incomplete checks and budget limits.
• FixedClarify the component export option in the upload advice.
• NewDownload single-plate CAD review DXFs with outlines, holes and part marks, plus area and weight checks. These files are not yet approved for fabrication.
• FixedCommunity model weights now count toward the builder leaderboard; hidden weights remain excluded.
• NewPart drawings let you set how much larger bolt holes are than the bolts
• NewComponent mark filters now support Does not contain to exclude matching keywords or selected prefixes
• FixedFix axis-grid alignment turning already upright, aligned models upside down
• FixedComponent details no longer show steel grades such as Q355B as element numbers, and more grade spellings are recognized
• NewExport four box-section plates as full-length millimeter DXF with source hole outlines for CAD review.
• FixedFix single-part components showing part numbers in component mode and component search.
• NewBox members now offer four-plate previews with construction confirmation, lap selection and plate dimensions. Unsupported geometry explains why; previews are for checking only.
• FixedComponent clicks now keep the model solid in splat mode; the effect starts only after a confirmed drag.
• NewIFC uploads now warn when part Tags contain material grades and independent part marks may be missing, with options to continue or re-export.
• FixedReduce waits when opening different part drawings and clarify first-generation guidance
• FixedFix missing assembly labels in some models and stop treating material grades as part marks; unnumbered parts can be opened individually
• ImprovedPart drawings now derive bolt holes from bolts exported as solid geometry
• ImprovedPart drawings now recognise bolts exported by more detailing tools and draw their holes
• ImprovedPart drawings now show bolt holes on models with very large bolt counts

• NewBefore uploading, we now tell you whether an IFC has a component (assembly) hierarchy — part-level steel exports get a heads-up in the confirm dialog instead of after conversion
• ImprovedFeedback is now in the top nav — no need to scroll to the footer
• FixedClicking a part now shows that part's own mark in the info panel headline, plus a new "Assembly" row — no longer the whole member's mark
• ImprovedWhen filing feedback you can now paste a screenshot (Ctrl/Cmd+V) or drag image files in
• FixedOverlapping dimension labels on a part drawing now stack apart instead of piling up
• FixedFixed: with the splat drag effect on, clicking a part selected nothing and the info panel never opened
• FixedFixed feedback replies popping endless "saved" toasts and reloading the page
• ImprovedModel check findings now show the element mark used in the 3D view and QR labels, instead of generic names like "steel column"
• FixedFixed the total weight on the home page: one model's volumes were read in millimetres, inflating the site-wide total a billionfold

• ImprovedThe model page no longer refreshes on a timer while converting, and switches over on its own when it finishes
• ImprovedModels open faster: the 3D viewer's initial bundle is less than half its former size
• FixedFixed curved grid lines and levels disappearing after saving an axis grid in project view
• NewModels containing line geometry now upload and display; they used to fail conversion
• FixedClash detection now states how many parts have an incomplete 3D mesh and that results for those parts are not guaranteed, so a missed clash is not mistaken for a clean result
• NewPreview component labels on the model page — flip through them one by one to check marks, locations and QR codes before exporting
• NewModel check adds a "Data quality" category: it finds parts whose 3D mesh is incomplete, so any volume, weight or area computed from them is unreliable
• FixedWhen a share is password-protected or login-gated, scanning a component QR now lands on the password or sign-in page instead of a dead error, and the export dialog warns about it up front.
• FixedComponent label QR codes now carry the share token, so site crews can scan straight to the component while the model is shared.
• FixedRight-click “Isolate” now leaves X-ray mode, matching the panel's isolate
• FixedFixed re-converted models still showing the previous 3D data (affected a few models)
• ImprovedAll grid systems in a model are now drawn at once instead of one at a time, and radial / arc grids finally render
• FixedFixed models showing up on their side: the viewer now reads column marks (GZ… = steel column) to work out which way is up
• ImprovedThe component filter is now also available in the viewer header, next to component search
• NewNew component filter: show only what you need, by category (columns, beams, plates…) or by component mark prefix, matching either the start of the mark or anywhere in it
• NewComponent marks now show by default when a model opens
• FixedMeasurement endpoint markers now show up in issue snapshots
• ImprovedNo more splat effects by default — both the intro animation and the drag-to-particles effect are now off; turn either back on in Settings
• FixedModels auto-aligned to their grid no longer flash a second, misplaced ghost while opening
• FixedFixed the model jumping out of view when scrolling right after rotating
• ImprovedThe opening animation no longer lags behind loading — the particles are prepared while the model loads, so it starts the moment the loading screen disappears
• NewComponent marks can now be shown right in the 3D view: turn on "Marks" in the toolbar and numbers sit on the members themselves
• ImprovedThe opening animation now settles cleanly: once the particles form the structure it stays put instead of bursting apart again, and the animation plays on large models again
• NewIssues now show as markers in the 3D scene, colored by severity — click one to open it and fly back to the view it was raised from; nearby markers merge into a single counted pin
• FixedMeasurement numbers (total, X/Y/Z, angle) now show up in screenshots
• NewThe drag splat effect is now on by default. You can turn it (and the intro animation) off under Settings → Preferences, and your choice is saved to your account, so it follows you to any computer

Vote on feedback

• ImprovedOrigin / point markers in 3D coordinates are now captured in screenshots
• ImprovedThe particle intro now also plays for large models, and the axis grid and level lines turn into particles along with the model instead of staying as sharp lines
• NewProject issues now have a standalone detail page — see the snapshot, timeline and reply without loading the 3D model; the list can be grouped by status, sorted, and updated or reassigned in bulk
• ImprovedModel issues can now be filtered and searched by status, severity and assignee, completed ones are collapsed by default, and you can sort by severity or due date
• ImprovedThe splat effect no longer snaps on and off — particles now splash in and scatter out as you start and stop dragging, and opening a model plays a short particle-assembly intro
• ImprovedAR preview gains an X-ray view: diaphragms inside a closed section are visible without selecting them first, and tapping the same spot repeatedly steps inward part by part
• ImprovedGrid bubbles are now hidden by the structure just like the grid lines, instead of floating in front while you orbit
• ImprovedOrbit now pivots around the component under your cursor instead of the whole model; hold Space during a marquee selection to orbit
• NewYou can now upvote other people's feedback, and sort the board by what is most wanted
• NewFeedback board gains keyword search, Newest/Most wanted/Most discussed sorting, and an "only mine" filter
• NewYou can edit the title, body and type of your own feedback; edited posts are marked as such
• NewScreenshots in a feedback post can be paged through with the arrow keys instead of closing and reopening each one
• NewFixed: a comment you just posted only showed up after reloading the page
• NewGet an email when an issue is assigned to you, replied to, or changes status; the dashboard now shows what is assigned to you, and due or overdue issues are flagged
• ImprovedModels exported part by part (no assembly level) now say so up front, instead of leaving you wondering why a click never selects a whole assembly
• ImprovedAfter a marquee selection, press Esc or click empty space to clear it; also added to the right-click menu and the count badge
• ImprovedGrid moved out to its own toolbar button — toggle grid lines and pick which grid to view
• NewYou can now search models by name when adding one to a project
• ImprovedScreenshots attached to feedback now have hidden data like location and device model removed before they are stored
• ImprovedIn AR preview, selecting a part now fades whatever blocks it, so diaphragms inside closed box sections are finally visible
• ImprovedAxis grid lines are easier to click when measuring spans: lines passing under your viewpoint now pick up, and an occluded line yields to the visible one beside it. The selected line is drawn thicker and its number follows into view.
• FixedFixed models appearing rotated on their side when the source file exports columns as beams; column names are now used to detect which way is up
• NewNew feedback board: report bugs or suggest features with screenshots, see everyone's feedback once signed in, join the discussion, and follow the status we set on each one
• ImprovedConsistent scroll zoom: pointing at empty space no longer rushes straight through the model — it eases in just like pointing at a part
• ImprovedA .gltf whose geometry lives in a separate .bin is now rejected at upload time, instead of failing minutes later
• FixedGrid numbers now stay on their own axis instead of piling up on nearby members when zoomed in
• FixedFix oversized stray geometry blocking the view and swallowing clicks
• ImprovedComponent QR export now splits selections over 5000 components into multiple files with continuous numbering, groups components by category, and asks for a re-export when the IFC has no assembly level
• ImprovedRedesigned model details page: actions sit below the title and total weight joins the top stats
• ImprovedChoose which components to include by name before exporting the QR sheet, so large models no longer fail for exceeding the per-export limit
• FixedTranslucent elements such as glass and curtain walls now render translucent instead of solid
• FixedIn assembly pick mode, box selection now selects whole assemblies: right-to-left selects any assembly the box touches, left-to-right only fully enclosed ones; show-only and hide act on whole assemblies
• FixedComponent QR sheet fixes: profile sizes (e.g. D12, PL6*100) are no longer shown as marks, part marks from more detailing tools are recognized, and the sheet is redesigned with larger marks and print-ready page setup

• FixedModel project name is no longer shown when it just repeats the file name
• FixedPart drawings: plates exported as accessories (stiffeners, connection plates, etc.) can now be opened
• NewExport a component QR sheet from the model page: one row per component with its mark, link, QR code and approximate grid location, ready to print as labels
• ImprovedIn the AR preview, bolt holes added from fasteners now show outline rims
• ImprovedAfter a box selection, right-click to show only or hide the selected elements; the selection count now counts assemblies instead of individual parts
• FixedComponent AR no longer drills holes where shear studs are welded, and cut bolt holes are no longer plugged by black solids
• ImprovedMore reliable large uploads: files are compressed and sent in parts, and a dropped connection resumes where it left off
• FixedDeleting a model no longer hangs; it disappears from the list right after you confirm
• NewNew "My membership" page with your plan, quotas, team members and purchase history in one place; the membership card on the dashboard now links to it
• FixedComponent AR now cuts every bolt hole on bolt-heavy components, and says so when some holes are left out
• ImprovedWhen a part in the model has no holes cut, the part drawing now infers hole positions and diameters from the bolts passing through it
• ImprovedPart drawings now show assembly and part marks in the header and parts list instead of generic names like "Steel Assembly"
• FixedFixed AR preview refusing assemblies with many small plates (such as box columns) as "too large or too complex"
• ImprovedThe community post box has a new look that stands apart from the feed; visibility is now picked with three buttons

Community and Explore redesign

• NewThe component info panel has a compact view showing just number, weight, profile, material and length
• ImprovedA dragged component info panel now stays where you put it across picks and reloads, with a button to unpin
• FixedLay flat in component AR now levels sloped beams and braces instead of leaving them tilted
• FixedFixed AR preview failing with "too large or too complex" for bolt-heavy components when enhanced outlines are on
• FixedThe third-party sign-in consent page and the error pages for components, AR previews and profiles now show English when English is selected
• ImprovedBrowser tab titles now use one product name, "BIM Model Viewer", on every page
• FixedBrowser tab titles and link previews on sign-in, settings, projects, shared models and other pages now follow your language, and update as soon as you switch
• FixedViewer help and shared-model tips now show real instructions instead of placeholder text
• NewNew "Splat Effect" toggle in the View menu: the model turns into soft glowing points while you drag and snaps back to solid when released
• ImprovedOn phones the dashboard now shows your models first, with an Upload shortcut at the top of the list
• ImprovedWhen signed in, the top bar keeps your work links and tucks community, explore, pricing and more into a Discover menu
• ImprovedThe model list now shows each model's visibility (private, community or public plaza) at a glance
• ImprovedNew project now opens in a dialog, and the project list uses the full page width
• FixedOn phones the viewer header no longer covers Version compare; the custom axis grid panel no longer overlaps other panels; locked tools are marked in the collapsed toolbar
• FixedViewer help now lists the shortcuts that actually work, and a failed load offers a reload button
• FixedSign-in and sign-up messages are fully in English on the English site, with clear error reasons
• ImprovedSettings now show 'Our standards' and 'Brand customization' even when your plan lacks them, with a way to upgrade
• ImprovedRemoving a team member, deleting a post or blocking someone now asks first; the upload card shows your per-file size limit
• ImprovedSteel plates in component AR now show their bolt holes (purlin cleats, connection and base plates) instead of solid plates
• FixedUpload or remove your avatar right on the profile page; it now shows in the header, dashboard and settings too
• FixedScanning the homepage AR demo code no longer often reports that no component is available
• FixedThe profile page now shows the actual last-login time instead of a placeholder
• NewCommunity posts now show how many people have viewed them
• NewThe Community link in the header shows a badge with the number of new posts, cleared once you open the feed
• FixedFix post and comment authors showing a generic name when detailed profiles are not published.
• ImprovedCommunity profiles now let you upload an avatar instead of entering an external image URL
• ImprovedCommunity posts, comments, messages and profiles now block disallowed words and strip hidden control characters
• ImprovedThe profile website field now only accepts http(s) links, and email must be well formed
• ImprovedNew posts now default to public visibility
• ImprovedExplore, Rankings and Community got a new look: model cards, a top-three podium, and one shared navigation
• ImprovedPages now state that Explore is public without sign-in, while Community models are for signed-in members only
• ImprovedProfiles put Follow and Message up front, with Copy link and Block under More
• FixedFixed community posts losing their content during site updates; failed submissions now retain input and show feedback.
• FixedSigned-in members can view basic author profiles while each author controls which company and career details are shared.
• NewMy Models now marks expired shares with a clickable management badge
• FixedKeep language selection consistent between the homepage and dashboard across navigation and refresh
• NewPublish models to the signed-in community or the public gallery, or withdraw them from discovery. Browse community models in a dedicated list.

• FixedFix section outlines remaining for hidden objects when isolating components
• ImprovedSign in to access the community, including posts, comments and images, then return to where you left off.
• ImprovedOpen author profiles from Explore and rankings; sign in to view profiles and return to the selected author afterward.
• FixedFix stale section outlines when moving or rotating a clipping plane
• ImprovedRedesign community feeds, professional profiles, profile editing and messages for clearer reading and easier mobile use.
• FixedFixed plates in some models turning into planes hundreds of kilometres wide that hid the whole model (applies to new uploads and reconversions)
• FixedParts with no weight (or a weight of 0) in the model now show an estimate from volume × density marked "≈" instead of 0 kg
• NewLarge local IFC conversions resume saved geometry work after service restarts
• NewAdd professional profiles with selective visibility, follows, photo posts, comments, likes and private message requests.
• FixedFix service updates interrupting large model conversions and restarting them from scratch
• ImprovedExplore now uses lists, with matching rankings, aligned columns, clearer ranks, mobile details and ordering explanations.
• FixedRandom AR demos select complete assemblies only and explain camera scanning and default-browser behavior.
• FixedRandom AR demos skip overly complex components to prevent loading failures after switching.
• ImprovedExplore now uses clearer model cards with improved metadata, sorting, pagination and mobile layouts.
• FixedRandom AR demos now prefer complete assemblies with their connected plates instead of isolated plate parts.
• FixedThinner AR component outlines improve close-up plate inspection.
• NewTry free AR component demos from the homepage, switch to another public component, and open them on your phone with guidance and QR codes.
• FixedAlready horizontal components can roll directly without using Lay down first.
• NewRoll laid-down AR components, enhance their edges, and locate parts by tapping or searching their marks
• FixedWhole-model AR now supports larger factory models and reuses repeated geometry to reduce export size and memory use.
• NewPreview a whole model in AR from analysis tools, with adjustable scale or true size, available on Pro Team and Ultra.
• NewLay components down 90 degrees in the AR preview and carry that pose into your space
• FixedBox selection now uses a dashed-box cursor icon for easier recognition
• NewThe homepage now introduces erection playback, model tours, component AR and QR labels with their membership tiers.
• NewUltra can generate stable component QR labels for printing and scanning; component AR and automatic roaming require Pro or above.
• FixedFix the engineering status menu appearing behind the component information panel
• NewOpen an AR preview of a selected component on supported phones, or scan a desktop QR code to continue on your phone.
• ImprovedAutomatic route roaming now requires Pro or Ultra, with upgrade guidance for Free and Basic users.
• ImprovedAuto-roam collapses settings during playback, with an independently collapsible route map and accessible pause and stop controls.
• ImprovedUpdate a picked component's fabrication or installation status from its info panel or right-click entry, with compact filters and grid tools.
• FixedFixed "Align to grid" laying down models whose grid has only a single bay
• ImprovedReduce redundant grid annotation work while navigating models
• NewCreate project issues from model components, annotate snapshots, assign owners and track resolution, with links to original and revised models.
• FixedKeep grid labels and axis dimensions visible at low viewing angles and close zoom
• FixedFixed some models being wrongly stood on end by automatic grid alignment; grid levels named in millimetres no longer read as hundreds of metres

Project share links

• FixedWhen a model ships a grid far larger than its geometry, the first view no longer shrinks the model into a few dots, and the level ruler stays on screen
• FixedFixed one share link asking for its password again when several password-protected links were open at the same time
• NewProjects can now be shared with a read-only link that needs no sign-in — the recipient sees the component list and what has arrived on site; you choose which of erection status, fabrication status and weight the link reveals
• NewFor models exported part by part, a welded beam now lists the plates it is built from — nominal web and flange sizes
• NewWhen a model carries no assembly level, the part drawing now says why and what to ask for, instead of a bare "no parent assembly"
• FixedFixed models whose grid appeared upright with level labels piled up
• FixedFixed garbled project and component names on models from some detailing software exports
• FixedFixed some models failing to convert when the file header contains non-ASCII paths
• FixedPart drawings now show the complete assembly parts list with switching; parts without drawings remain visible and labeled.
• FixedAxis-grid progress updates now affect only instances inside the selected range and refresh the component list immediately.
• NewPlan and save walkthrough routes in top view, set camera height and speed, and replay them automatically
• NewNew 3D coordinate tool: choose a grid intersection or pick an origin, then read X/Y/Z at a model surface point.
• ImprovedDrag the component information panel by its title to uncover the model.

• NewAnnual billing for membership plans — pay for 10 months, get 12
• FixedFixed the level ruler: you can still grab and drag it after picking "Move elsewhere" from the right-click menu
• ImprovedThe level ruler no longer takes a toolbar slot - drag it on the canvas, or right-click it and pick "Move elsewhere"
• ImprovedModels with a live share link are now marked, with a "Shared only" filter
• FixedClash detection: resolved items no longer reappear on models without assembly marks
• FixedThe clash and health panels now say "checking" while a scan is still running, instead of briefly showing a green "nothing found"
• ImprovedClash detection now includes gussets, stiffeners and connection plates, removing false "insufficient gap" reports between beams joined by a splice plate
• NewThe bolt list now flags high-strength bolt sizes that no Chinese standard lists (M18, for example) — usually the model wrote the hole diameter into the size column, so you can check before ordering
• NewRight-click empty space to toggle grids, level ruler, X-ray and orthographic view; right-click a grid line or the level ruler to hide it on the spot

• FixedNewly uploaded STEP models retain face colors while selection and recoloring still act on whole components.
• ImprovedSmall models no longer wait behind large ones: IFC files under 100MB convert on a dedicated machine in parallel

• ImprovedIn X-ray mode inner parts such as diaphragms and stiffeners are now picked directly instead of the whole column
• FixedQuantity takeoff and paint view for newly uploaded models no longer wait behind background recalculation of older models
• ImprovedConversion progress no longer stalls on one number: geometry parsing advances per element and the finishing steps are shown separately
• ImprovedPick inner part edges directly in X-ray mode, with matching yellow hover previews and selection
• NewPaint view is now Coating view with two schemes, factory paint and site fireproof coating: fireproof coating includes galvanized purlins and sag rods, while factory paint lists galvanized parts separately and leaves them out of the area
• ImprovedPaint view now measures area per face: only surfaces reachable from outside count, so inner faces of box walls and faying surfaces are excluded automatically; works without assembly structure, so diaphragms are found in models that are not split into assemblies
• FixedExpired share links no longer open; changing a share password now requires visitors to unlock again
• ImprovedErection demo now follows site order — columns with bracing frame by frame, then beams, roof purlins, wall girts; now a Pro Team feature
• NewNew "Paint view": rule-based pick of the parts that get painted, colored in 3D with the paint area totaled; unpainted parts such as box-column diaphragms and bolts are listed separately and can be selected in 3D
• ImprovedErection demo now proceeds frame by frame along gridlines: columns, beams, next frame, cladding last
• NewNew erection demo: press play and the building assembles itself from the ground up
• ImprovedThe conversion-complete email now tells you how long the conversion actually took
• FixedThe homepage demo now keeps the model in view while flying around outside it
• ImprovedInclined members such as sloped beams and braces now keep an order of magnitude more geometric precision, and their outlines fade at the same zoom as straight members (applies to newly uploaded models)
• ImprovedThe homepage demo now flies through the model first-person style, in and back out
• FixedFixed the homepage demo model, which kept showing "failed to load"
• NewNew "Frame rate" toggle under the toolbar's View group shows live FPS and slowest-frame time in the canvas corner, so you can tell whether a large model is actually stuttering
• ImprovedReferral program: an incorrect credit redemption can now be reversed and the credit returned to your balance
• FixedFixed the whole model turning grey and losing its colors when zoomed out

• NewNew referral program: get your code and link in Settings; earn 10% of each referred friend's payment as account credit for 12 months, 20% in months with 10+ paying friends
• FixedClicking a component now opens its info panel once, instead of flashing an empty panel before the numbered one
• FixedFixed "align to grid" tipping over a model that was already upright: a model already sitting on its grid is left as is
• NewThe dashboard now offers to set up a passkey, so you can sign in with your fingerprint or face next time
• NewStraighten model is now a top-level toolbar button
• ImprovedSign-up now checks the email domain up front and tells you right away if it is mistyped
• FixedBox selection is more precise: dragging next to braces and sloped beams no longer sweeps in nearby members
• ImprovedDuring upgrades you now see a "back in a moment" page that returns you to where you were, instead of a browser error
• FixedFixed the initials avatar being nearly invisible (especially in light theme), and aligned the heights of the header's top-right controls
• FixedFixed the right-click menu being hidden behind the component info card
• FixedFixed component details showing only the mark for assemblies with many parts, hiding weight and part lists
• FixedFixed the browser's own menu overlapping the component menu on right-click for some computers
• NewThe angle measurement tool now uses a clearer angle icon
• FixedAfter manually straightening a model, the view and orbit axis follow the straightened model
• FixedBCF views exported from a straightened model no longer land outside the model
• FixedAfter aligning a model to its grid, the view no longer flips to a top-down plan
• FixedFixed bolts being reported as "holes only, no bolt assembled" on models whose export leaves the bolt/nut/washer counts blank; bolt lists and quantity takeoffs are recomputed
• FixedSearching components or parts in a large model on a phone no longer crashes the page, and results come up faster
• FixedClicking a member no longer selects a grid line hidden behind it
• FixedLarge models no longer crash the page on mobile right after loading (search index now loads on demand)

• ImprovedThe bill of quantities now has a gross/net weight basis and defaults to gross (holes and cuts not deducted), matching how steel stock is bought and billed; the basis and its coverage are stated on the panel and in the exported file, and you can switch back to net in one click
• FixedPositions modelled as holes with no bolt assembled are no longer counted as bolts — they are listed separately as "holes only", so the take-off no longer asks you to order bolts that do not exist
• FixedPicking a grid axis is now obvious - the axis is drawn thicker and its number turns green on the first click
• NewOpening a very large model on a phone now asks first, with a reduced mode that skips bolts and other repeated small parts so the page no longer crashes mid-view
• ImprovedBills of quantities are now computed in the background ahead of time, so the panel opens with the numbers already there
• FixedBolt quantities now reflect the real number of bolts, instead of counting a whole group as one set
• ImprovedFind assemblies / parts is now instant — the search index is prebuilt during conversion and prepared as soon as the model opens
• ImprovedGrid spacing no longer needs a toolbar toggle: click two parallel grid lines in the view and the distance appears; the cursor turns into a pointer over a grid line
• FixedThe search box opens immediately when you click Find assemblies / parts, with a "preparing search" hint while the index loads
• ImprovedModels open faster — the viewer now downloads about a third as much data
• ImprovedThe level ruler can now be dragged directly: grab it anywhere in the view (pole, tick, or elevation label), move it where you need it, and it snaps to nearby parts or grid intersections on release
• NewNew grid-spacing tool: click two grid lines to read the distance, click a third to re-measure
• Improved"Align to grid" no longer freezes the page on column-heavy models
• FixedFixed missing flanges, pipes and plates on some models
• FixedStuds no longer show a hole diameter — they are welded on, so the value was just filler from the detailing software
• FixedStuds no longer show as "unknown spec" — labelled ⌀19×80, counted in pieces, and listed in the bolts & studs summary
• FixedFixed "align to grid" laying models down when the file carries more than one grid system
• ImprovedBolt lists stay visible and exportable on shares that hide weights - a bolt count is not a weight
• ImprovedThe like button on shared pages moved to the right edge, within thumb reach on phones; the space-taking share notice is gone
• NewClick a bolt to see its spec (M24x60, standard, hole diameter, site/shop); assemblies now list their bolts, and the takeoff exports a bolt summary by set
• NewDerive a grid for models that ship without one, then type in your own labels
• FixedLevel labels on the elevation ruler no longer overlap each other when a model carries many levels
• NewThe merged project view can now search components across models, colour every model by fabrication or erection progress, and summarise each model's health and clash findings in one table
• FixedFixed the component search panel not opening on models in the new format
• NewThe loading panel no longer shows the model file size, only progress, speed and the estimated time left
• ImprovedElement info card now fills in instantly - weight, profile, grade and part marks no longer lag a second behind
• NewModels in a project can now be viewed together in one scene — show or hide each one, isolate a single model, and picking still tells you which model a component belongs to
• FixedFixed models exported level-by-level showing only one elevation and duplicate grid systems; auto-align to grid now works on them too
• FixedThe loading progress panel is back, with percentage, downloaded size, live speed and estimated time left
• ImprovedThe component mark now headlines the selection info panel, with a new "Part marks" section listing which parts the component is made of (identical marks are merged with a count)
• NewModels that carry several grids (common on multi-zone plants) can now be switched between in the viewer and on shared links
• Improved"Align to grid" now reads the columns to find which way is up: on files exported under a rotated coordinate system it no longer lays the building on its side, and it declines to guess when the evidence is weak
• FixedWhen a model carries several grid systems (one per zone or building), pick which one to use in the grid panel instead of being stuck with the first
• FixedThe level ruler is back to its previous look, with each elevation label kept at its true height
• FixedGrid bubbles now sit clear of the whole building instead of hiding behind a neighbouring roof, and crowded level labels fan out so each one stays readable
• NewNew "Place level ruler" tool: click it, then click the model, and the level ruler stands where you clicked instead of far off at the grid corner
• ImprovedGrid bubbles and the level ruler now follow your viewpoint to the near sides, so they no longer sit on top of the model
• ImprovedA magnifier now follows the cursor while picking points for distance and angle measurements, so you can see exactly which vertex or edge is snapped
• ImprovedIFC conversion no longer rejects files by size; per-plan upload limits are unchanged (Free 200MB, Basic 1GB, Pro 2GB)
• NewModels that carry their own grid now snap onto the grid lines on open; the straighten panel also gains an "Align to grid" button
• NewA level ruler now stands at the grid corner, showing each elevation at a glance
• ImprovedIFC conversion now accepts files up to 200MB (was 150MB), and runs faster with less memory

New in-house 3D engine

• FixedFixed the share access password box being auto-filled by the browser with a saved password
• ImprovedNew share option "let visitors save this to their library", off by default; a saved item is a read-only shortcut that stops working once you disable or regenerate the link, with no source download or re-sharing
• ImprovedStandard STP, STEP, GLB and GLTF models now use the new viewer, with improved framing for small parts
• ImprovedThe desktop toolbar no longer scrolls: view settings (zoom, projection, first person, wireframe, X-ray, smooth mode) and analysis tools (find, health check, issues, quantities, clashes, orientation) each fold into one button, while reset, fit, select and measuring tools stay right on the bar
• ImprovedHover over components for a translucent yellow preview; selected components stay green
• FixedTurning off "show weights" on a share link now also hides weights in the material list, health findings and part schedules — not just the property panel
• ImprovedConversion after upload is much faster: models with tens of thousands of members and every bolt are ready within minutes
• FixedMouse-wheel zoom in the new engine now moves toward the part under the cursor and slows as it gets close, instead of shooting through it
• NewWhen a model carries its own grid, the project grid now uses the real axis labels instead of guessing from column positions; the viewer draws the grid lines by default, with a toggle under "Display"
• FixedSelecting an assembly shows weight, profile, material and length again: weight summed over its parts, the rest taken from the main member
• ImprovedSelected components are now drawn translucent so you can see what is behind them
• NewHomepage now introduces our in-house 3D engine and what it does for steel models
• FixedComponents in front of a selected one are no longer tinted green
• ImprovedThe phone toolbar now uses the same icon bar as desktop, laid out along the bottom: select, measure, angle and section sit right on the bar, while view settings and analysis tools each fold into one button
• ImprovedSelected components are highlighted again in translucent green with white edges, and show through other components so items picked from a list are easier to locate
• FixedFixed models showing up on end in the new viewer, and brought "Straighten model" back to the toolbar
• ImprovedPart drawings open much faster the first time; newly converted models open instantly
• FixedFinding-count badge on the collapsed toolbar is no longer clipped
• NewThe 3D viewer now runs on our own new engine: on the same 20-million-triangle model, frame rate nearly doubles, GPU memory drops to under a third, and the model file you download is about a quarter smaller
• NewBolts, washers and other small parts are no longer left out and show up in the new engine; navigation, sectioning, measuring and the toolbar layout stay the same
• FixedRight-drag panning no longer pops up the context menu
• NewClicking now selects the whole assembly by default; a new toolbar toggle switches between picking assemblies and picking parts

Toolbar and measuring on phones

• FixedFixed the project view where clicking a component-list row no longer selected or flew to it in 3D
• FixedLike and save buttons on shared models now measure and dodge the bottom toolbar, including in in-app browsers
• FixedFixed the like and save buttons on shared models being hidden behind the mobile toolbar
• NewOn phones the toolbar moved to the bottom of the screen, grouped into View, Measure and Analyze — all within thumb reach
• NewFirst person, marquee select, distance, angle and section now work on phones — press and hold, aim in the magnifier, lift to place the point
• FixedFixed a case where only main members rendered and corbels or connection plates were missing
• ImprovedThe viewer toolbar now starts as a slim icon rail, display switches moved into a Display menu, and the model-check button shows how many issues were found

Legal pages and enterprise deployment

• NewAdded Terms of Service, Privacy Notice and a Service Level Statement, linked from the footer
• NewNew enterprise and private deployment page, with an online enquiry form
• FixedFixed the viewer toolbar so the last few buttons stay reachable when the window or phone screen is too short
• FixedFixed the model page wrongly saying bolt geometry was skipped
• NewStraighten a model that loads on its side or upside down; the orientation is remembered
• ImprovedBolt-heavy models now convert an order of magnitude faster; the model page says what was skipped
• FixedFixed very large models losing parts or showing empty properties after conversion
• ImprovedModels being converted are no longer interrupted and restarted by a service update
• FixedFixed models stuck showing "queued" while conversion was actually running after a service update
• ImprovedThe top navigation is now the same on every page, so Explore, Rankings, Projects and Batch check are one click away from anywhere
• NewNew FAQ and Guides sections covering how to open IFC online, how to send a model to a client, and what clash detection and health checks each look for
• FixedDeleting a model mid-conversion no longer blocks everything queued behind it
• ImprovedWhile queued or converting, we now tell you it is safe to close the page, we will email you
• FixedDistance labels sit beside their own line now, clear of the line and of each other
• ImprovedPricing and Changelog links are now in the dashboard header
• FixedDistance labels now stack instead of covering each other
• ImprovedDistance measurements now read out in millimetres instead of metres
• NewModels added to a project by mistake can now be removed
• ImprovedEach model-check threshold now shows whether it comes from the general standard, your shop standard, or this project's or model's own setting
• FixedScrolling inside the homepage demo now only zooms the model, no longer scrolls the page
• NewCheck standards can now be set for a single model — subcontracted parts or one building's lifting limits, set on the model page without touching anything else
• ImprovedPaid plans get double the storage: 4GB on Basic, 10GB on Pro Team, 20GB on Ultra
• NewUploading a very large model now explains what its size is actually spent on, with advice for the next export
• FixedModels waiting in the conversion queue no longer show a fake progress percentage; they now show how many models are ahead
• ImprovedUnified how storage usage is counted: "used space" is now your uploaded file plus the model data we generate from it, both at original size
• FixedFixed uploads over 520MB failing with a misleading "storage full" message

• ImprovedThe homepage now shows what a membership adds — part drawings, model health checks, clash detection and more
• FixedPaid plans' per-file upload limit now actually applies — up to 1GB on Basic, 2GB on Pro Team
• ImprovedLong thin members now use a break view — the middle is omitted so both ends are readable
• ImprovedClash detection is faster, and large models without assembly grouping now finish
• ImprovedPart drawings can be zoomed and panned, so end cuts on long members are readable
• NewSearch now covers both assemblies and parts — type a part mark or section to find that part, see how many there are and which assemblies use it, and open its drawing in one click
• ImprovedPart drawings now dimension corner cuts and fillet radii automatically
• ImprovedThe parts list now shows quantity, unit weight, subtotal and the assembly total, so you can check weights straight off it
• FixedClash detection is back, and it no longer slows down model conversion
• NewA part drawing now shows which assembly the part belongs to and every part in that assembly, so you can jump straight to any of them
• FixedFixed part drawings on phones: buttons no longer overlap, the drawing no longer pushes the details off-screen, and measuring now snaps to features reliably for accurate numbers
• NewAdmins can now browse as any plan tier and see exactly what those users see
• NewDimensions you measure on a part drawing can now be saved, so the next person to open that part sees them straight away
• NewOpen any single part to see its flat drawing — outline, thickness, hole diameters and hole-to-edge distances are dimensioned, and you can measure anything else by clicking two points
• NewNew clash and clearance check: finds parts that run into each other, and places too tight to assemble on site
• NewNew bill of quantities — material rolled up by section, grade and length, ready to export
• NewFlagship plans can now export model check results as a branded report to print or save as PDF and send straight to the client, and check many models at once with a single summary table
• NewNew issue tracking: raise an issue on a member, assign it to a teammate, and track it to closed — the view you were looking at is saved with it. Health-check findings turn into tasks in one click, and the whole list exports as BCF for other BIM tools
• FixedFixed STP/STEP, GLB and GLTF files failing to convert after upload
• FixedFixed STP/STEP files failing to convert after upload
• NewModels are now checked automatically once conversion finishes, and anything worth a look is called out in the completion email with a direct link
• NewFree plans now see how many things the model check found; the details need an upgrade
• NewThe model check now runs against your own standards — stock length, crane and lifting capacity and transport limits are all yours to set, and a single project can override just what differs

Membership plans are live

• FixedModel checks now skip concrete members — the stock length, transport and lifting limits are steel-shop figures, and applying them to slabs and concrete columns just floods the list
• ImprovedIn-progress uploads are no longer cut off when the service updates
• NewNew model check: finds parts over stock length, road transport or lifting limits, and marks whose parts do not match — click one to fly straight to it
• NewNew model version comparison: pick another revision of your own model and see added, removed, moved and re-sectioned parts colour-coded, with an exportable list
• ImprovedModel conversions no longer fail when the service updates; they requeue automatically
• ImprovedA broken IFC file is now rejected at upload with a clear reason, instead of failing conversion minutes later
• ImprovedThe dashboard storage card is now "My membership" — see your plan plus share-link and team-seat usage at a glance
• FixedFixed an error when creating a share link that stopped the link from being generated
• NewMembership plans are live — four tiers, and the first 300 users keep Basic free forever
• ImprovedThe homepage hero now shows a random public model from the plaza on every visit
• NewTeam members can now open projects and component progress; members with reporting access can update statuses too
• ImprovedThe engineering view now speaks English — the component list, progress legend and bulk actions all follow the language switch
• ImprovedBuilt-in fabrication route and operation names now follow the interface language
• FixedError messages in the engineering view now follow the interface language
• NewNew team seats: Pro Team and Ultra can add colleagues to their workspace and share every model with them
• ImprovedThe project list and fabrication route editor now follow your interface language

• ImprovedAdded a “Changelog” link to the top navigation, reachable from the plaza and rankings.
• ImprovedThe homepage growth curve is now plotted day by day, so it reflects the real pace instead of only moving at month end
• ImprovedRedesigned sign-in: the three sign-in methods now fit in one row, the whole form fits on one screen, and Enter submits
• ImprovedPassword and email-code sign-in are behind a captcha again, blocking credential stuffing and verification-email spam
• FixedThe homepage growth curve now stops at the last completed month, so it no longer flattens out at the end
• NewNew changelog page: what we changed and fixed, newest first, in both Chinese and English.
• NewMembership moved from a single VIP flag to four tiers (Free / Basic / Pro / Ultra), each with its own storage, per-file size, share count and share lifetime. Compare them on the plans page.
• NewThe dashboard storage card now shows your tier and expiry date, with an email reminder 7 days before it lapses. Existing models and share links keep working after expiry.
• ImprovedThe sign-in page now leads with sign-in itself: the common path is front and centre, other methods collapse into one segmented control, and the brand panel shows on medium screens too.
• FixedThe element info panel no longer slides under the toolbar or off-screen — it now dodges whatever is actually on top of it.

Viewer fixes for domestic browser engines

• FixedFixed models that were visible but wouldn't rotate — or wouldn't open at all — on some phones (HarmonyOS and in-app WeChat browsers).
• FixedA long press on a touch screen no longer opens a context menu that freezes the model.

X-ray mode and mobile polish

• NewNew X-ray mode: the shell turns translucent so you can see stiffeners and connections inside a column.
• FixedThe opening camera now infers the vertical axis from the columns themselves, so Z-up and mirrored models no longer open lying on their side or upside down.
• FixedToasts on phones no longer stretch edge to edge or get pushed half off the left of the screen.

Growth chart on the home page

• NewThe home page now charts cumulative users, converted models and counted elements — from the same numbers shown at the top.

Speed and stability on large models

• ImprovedElement properties are now read on demand instead of being held in memory in full, so large models open more reliably and the service stays healthy.
• ImprovedModel files are compressed once at conversion time and served directly — faster downloads, and cancelling one no longer slows the whole site.
• FixedThe conversion progress bar shows again in the dashboard header, without the duplicate second bar in compact mode.

English dashboard

• ImprovedThe whole dashboard now follows the language switch, with no Chinese strings left behind in the English UI.

Model plaza, rankings and model detail pages

• NewNew model plaza and rankings: public models can be browsed without signing in, and liked.
• NewPublish a model to the plaza in one click from “My models” — the share link is created for you.
• NewNew model detail page: click a model's name to see its status, actions and share settings in one place.
• Improved“My models” rebuilt: actions are always visible, status is shown on the thumbnail badge, and paging moved to the bottom.
• ImprovedModel loading now shows download speed, bytes transferred and time remaining, and prefetches chunked models in parallel.

Structure tree, upload reliability and faster quotas

• NewThe structure tree now offers spatial, storey and type hierarchies — on shared pages too.
• FixedFixed the intermittent “file verification failed” on large uploads; failures now show the real reason and retry automatically.
• ImprovedThe dashboard and duplicate check no longer tally files one by one — seconds became milliseconds.
• ImprovedYour original upload is kept after conversion by default, and doesn't count against your storage quota.
• FixedElements with broken geometry are now dropped; they used to render as a black wall, causing flicker and “every click selects the same element”.

Better viewer tools and chunked huge models

• NewThe viewer gains a structure tree, a measurement magnifier and a context menu; measuring exits in two steps via right-click or Esc without discarding what you already measured.
• NewVery large models are converted and loaded in chunks, so files that previously failed to convert now open.
• ImprovedFast navigation switches on automatically for large models and stays off for small ones, with a manual toggle in the toolbar.

Large-file upload fixes

• FixedFixed the ~90% failure rate on large uploads: files now stream to disk, with proper timeouts and retryable error messages.
• FixedChinese file names no longer come back garbled after upload.