IFC Viewer Online · Back to the BIM & IFC blog
Tools & comparisons · 2026-06-30 · 9 min
Best Free IFC Viewer in 2026: 12 Tools Compared
Twelve free IFC viewers compared on what their vendors publish: where they run, what “free” includes, whether the file is uploaded and what they do beyond viewing. With a pick for each job.
Free IFC viewer in the browser: architecture, structure and MEP models of one building open together in IFC Viewer Online, with the model tree and the properties of the selected element
The best free IFC viewer is the one that fits where your file is allowed to go. If it must stay on your computer and you cannot install anything, use a browser viewer that works locally: IFC Viewer Online or Flinker Community. On a Windows desktop, BIMvision. On a phone on site, Dalux. To share models with a whole team, Trimble Connect.
Free IFC viewers compared
| Viewer | Runs on | What free includes | Where the file goes | Account | Beyond viewing |
|---|
| IFC Viewer Online | Browser | Viewing, measuring, sections, several models, 44-rule check, IDS | Stays in the browser | No | Validation, property editing, BCF, map context |
| BIMvision | Windows 10 or newer | The viewer, for personal and commercial use | Stays on the computer | Not stated | Plugins: IDS, clash, BCF, compare |
| Open IFC Viewer (ODA) | Windows, macOS, Linux | Everything | Stays on the computer | Sign-in shown; not stated if required | Clash detection, BCF export, IDS |
| Flinker Community | Browser; Microsoft 365 apps | IFC, BCF, IDS, DXF, “forever” | Stays in the browser | No | IDS check, BCF 2.1 and 3.0 |
| BIMcollab Zoom | Desktop download | The free viewer | Not stated | Not stated | Clash and IDS are listed for Zoom; the platform is paid |
| usBIM.viewer+ and usBIM.browser (ACCA) | Windows; browser | Desktop freeware; browser viewer with 10 GB | Desktop: local. Browser: uploaded | Browser: registration | Converts and exports IFC |
| Trimble Connect | Web, Windows, mobile | Viewing, coordination and file sharing; one project of your own | Uploaded | Yes | Clash detection; paid plans from $349 per user per year |
| Dalux BIM Viewer | Desktop, iOS, Android | The viewer | Not stated | Free sign-up | Imports clashes from Solibri or Navisworks |
| Autodesk Viewer | Browser | “Free online file viewer” | Not stated on the viewer page | Not stated on the viewer page | Not stated |
| Bonsai | Windows, macOS, Linux (on Blender) | Everything; free software | Stays on the computer | No | Authoring and editing native IFC |
| Speckle | Browser | One project, up to three users | Uploaded; IFC files of up to 1 GB | Yes | Versions and connectors |
| BIMData | Browser | Starter: 300 MB, unlimited users and projects | Uploaded | Yes | BCF comments; paid plans from €540 a year |
Read on 10 November 2026 from each vendor’s own pages (see the references). “Not stated” means the pages we read do not say.Sources: BIMvision [bimvision], Open Design Alliance [oda], Flinker [flinker], BIMcollab [bimcollab-free], ACCA [acca-viewer][acca-browser], Trimble [trimble], Dalux [dalux], Autodesk [autodesk], Bonsai [bonsai], Speckle [speckle], BIMData [bimdata] and our own pricing page [ivo-pricing].
Which free viewer for which job
What do you need the viewer for?
- Open a file now, nothing to install, nothing uploaded
- IFC Viewer Online or Flinker Community Both read the file inside the browser tab. Ours also scores the model and lists its errors.
- Daily viewing on a Windows PC
- BIMvision Free for commercial use, with plugins when you need IDS, clash or BCF.
- Mac or Linux desktop
- Open IFC Viewer Free, local, reads IFC 2x3 to 4x3 and detects clashes.
- On site, on a phone or tablet
- Dalux BIM Viewer A free viewer with apps for iOS and Android.
- Share models with a project team
- Trimble Connect The free plan covers viewing, coordination and file sharing, with the files in Trimble’s cloud.
- Edit the IFC, not only view it
- Bonsai Free native IFC authoring on Blender. For quick property edits without installing, the browser editor is enough. Edit IFC properties in the browser
Browser viewers that keep the file on your computer
Two of the twelve read the file inside the browser tab instead of sending it to a server. That matters when the model is under a confidentiality agreement or the IT department does not allow installations. Using an online viewer with confidential project data explains how to verify it yourself in the browser’s network panel.
IFC Viewer Online is ours. It opens IFC2x3, IFC4 and IFC4x3 files, several at once, with the model tree, properties, quantities, measuring and sections, and it checks the data: 44 rules, a score and IDS. It is free in the browser, and the paid plans add work that runs on our servers. [ivo-pricing] Its limit is the memory of a browser tab: for federated sets of several gigabytes a desktop viewer is the better tool.
Three models of one building, with the quantities of the selected element.
Flinker Community is free “forever”, needs no account, reads IFC 2x3, 4 and 4x3 and checks IDS 1.0. It also runs inside SharePoint, Teams, Power BI and Excel, which no other viewer here does. [flinker]
Desktop viewers
BIMvision is the usual answer on Windows: freeware for personal and commercial use, IFC 2x3 and 4, with a plugin store for what the base viewer lacks. [bimvision] The Open IFC Viewer covers Windows, macOS and Linux, reads up to IFC 4x3 and includes clash detection with BCF export. [oda] BIMcollab offers a free viewer as a download; clash management and IDS checking are listed for Zoom, and the platform around it is paid. [bimcollab-free] ACCA’s usBIM.viewer+ is freeware for the PC. [acca-viewer] Bonsai is the one to choose if you also want to change the model. [bonsai]
Cloud viewers
Trimble Connect, Dalux, Autodesk Viewer, usBIM.browser, Speckle and BIMData work on files stored in their service. In exchange, the whole team sees the same model and it opens on a phone. Trimble’s free plan covers viewing, coordination and file sharing; Pro costs $349 and Innovate $499 per user per year. [trimble] Dalux describes its viewer as free for desktop and mobile. [dalux] Speckle’s free plan holds one project and opens IFC files of up to 1 GB. [speckle] BIMData’s Starter plan is €0 with 300 MB. [bimdata] We could not read Autodesk’s support pages on the day, so we state nothing about its limits. [autodesk]
No longer free, or no longer developed
| Tool | Status | Source |
|---|
| Solibri Anywhere | Legacy; no longer developed; free only on versions before 26.4.0. Solibri recommends Starter, €99 per licence per year | solibri.com/solibri-anywhere |
| FZKViewer | Freeware; version 6.5.1 of January 2023; no further development | iai.kit.edu |
| Tekla BIMsight | Now Trimble Connect for Windows | tekla.com/products/tekla-bimsight |
Three viewers that older comparisons still recommend. Status read on 10 November 2026.Sources: [solibri-anywhere][solibri-pricing][fzk][bimsight].
When a viewer is not enough
A viewer shows you the model. It does not tell you that forty doors have no fire rating or that two elements share a GlobalId. For that you need a checker: the comparison of IFC model checkers covers ten of them, and the IFC model checker page shows a check step by step.
Open a sample in the viewer
An IFC4 office building exported from Revit. Click an element to read its properties.
IFC4 · 14 MB
Open the interactive IFC viewer
References
- BIMvision — Datacomp. Freeware IFC model viewer for personal and commercial use; IFC 2x3 and 4.
- Open IFC Viewer — Open Design Alliance. Free desktop viewer for Windows, macOS and Linux with clash detection, BCF export and validations including IDS.
- Flinker IFC viewer — Flinker. Community (free) and Enterprise editions, browser-side processing, IFC, BCF and IDS support.
- Free IFC viewer — BIMcollab. The download page of the free viewer.
- usBIM.viewer+ — ACCA software. Freeware desktop IFC viewer.
- usBIM.browser — ACCA software. Free browser viewer; needs registration, models are uploaded, 10 GB of storage.
- Trimble Connect — Trimble. Pro and Innovate prices per user per year; free viewing, coordination and file sharing.
- Dalux BIM Viewer — Dalux. Free viewer for desktop and mobile; sign-up required.
- Autodesk Viewer — Autodesk. The free online file viewer. Its support pages could not be read on the day, so the table states only what the viewer page says.
- Bonsai — IfcOpenShell. Free, open-source native IFC authoring built on Blender.
- Speckle: IFC — Speckle. IFC files of up to 1 GB in the web viewer; free plan with one project.
- BIMData pricing — BIMData. Starter plan at €0 a year with 300 MB.
- Solibri Anywhere — Solibri. States that Anywhere is no longer actively developed and that the free entitlement applies to versions before 26.4.0.
- Solibri pricing — Solibri. Plans and starting prices per licence per year, as published on 10 November 2026.
- FZKViewer — Karlsruhe Institute of Technology. Version 6.5.1 of January 2023; the page states there is no further development.
- Tekla BIMsight — Trimble. States that Tekla BIMsight is now Trimble Connect for Windows.
- IFC Viewer Online pricing — IFC Viewer Online. What is free in the browser and what the paid plans add.
Best Free IFC Viewer in 2026: 12 Tools Compared