Convertpoly
Convertpoly is a web toolkit for working with 3D models directly in a browser.
What Convertpoly is
Convertpoly is a web toolkit for working with 3D models directly in a browser. It converts, compresses, renders, and inspects files, reading 75 formats and writing 19. Files are processed on your machine in the browser, without an upload step. After the page loads, the tools can continue working when the network is disconnected. The converter previews a model before saving the converted file to your downloads folder. Its viewer exposes scene hierarchy, mesh and material information, and texture map previews, with controls for moving, rotating, scaling, and undoing changes. The renderer exports still images as PNG, WebP, or JPEG, and can package multiple frames in a numbered ZIP. Images can reach 8192 pixels per side, depending on GPU allocation. Convertpoly has no account or installation requirement and offers a free plan at no cost. Browser memory remains the practical limit for large files.
Good
- Reads 75 3D formats
- Processes files locally in browser
- Works offline after page loads
- Includes model inspection and rendering
- No installation or account required
Watch out
- Browser memory limits practical file size
- Some formats lack texture support
- Some formats lack animation support
Who it suits
Convertpoly suits people who receive 3D files their current software cannot open. It also fits users who want browser-based processing without uploading files.
Verdict
Convertpoly combines broad format conversion with local browser processing, inspection, and rendering. Its free, no-account setup is useful, but format preservation and browser memory limits matter for some projects.
Plans and prices
From Convertpoly's own pricing page, checked 9 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | No account · No ads · No file size limit imposed by Convertpoly |
The facts
Each one read from Convertpoly's own pages, with the date it was checked.
What it does
- Audience
- The FAQ describes the tools as useful for people who receive 3D files that their software refuses to open.checked 9 Oct 2026
- Conversion workflow
- The converter previews the model before conversion and saves the resulting file to the downloads folder.checked 9 Oct 2026
- Format limitations
- The FAQ says some formats cannot carry textures or animation; for example, STL and PLY do not store textures, and OBJ, STL and PLY do not store animation.checked 9 Oct 2026
- Format support
- The site says it reads 75 3D formats and writes 19.checked 9 Oct 2026
- Installation and account
- The site says no installation or account is required.checked 9 Oct 2026
- Local processing
- Files are read and processed in the browser on the user's machine, with no upload step.checked 9 Oct 2026
- Model viewer
- The viewer displays scene hierarchy, mesh and material details, and texture map previews, and supports moving, rotating, scaling and undoing changes.checked 9 Oct 2026
- Offline use
- The site says its tools continue to work after the page loads and the network is disconnected.checked 9 Oct 2026
- Practical file limit
- Convertpoly imposes no file size limit, but the FAQ says browser memory is the practical constraint and a tab can generally handle models up to a few hundred megabytes.checked 9 Oct 2026
- Rendering
- The renderer exports still images as PNG, WebP or JPEG and can provide multiple frames as a numbered ZIP.checked 9 Oct 2026
- Rendering limit
- Image output can be up to 8192 pixels on a side, subject to the user's GPU allocation.checked 9 Oct 2026
- What it does
- Convertpoly offers browser based tools to convert, compress, render and inspect 3D models.checked 9 Oct 2026
Alternatives to Convertpoly
- 1
CAD Exchanger
AndroidiOSWebAPI7.6From $590 a year - 2
3D-Tool
Free planWindows7.3€200 one-time - 3
ODA File Converter
Free planAndroidLinuxmacOSWindows7.1Free plan - 4
Convert3D
Free planWebAPILinuxmacOS7.0From $899 a year - 5
Spin 3D
Free planWebmacOSWindows6.8Free plan - 6
HOOPS Exchange
Free planAndroidiOSWebLinux6.7Free plan