Review 3D model changes before they become expensive mistakes.
Compare revisions, discuss changes directly on the model, and approve the version your team is ready to manufacture.
No account · No install · Files never leave your machine
This wall looks too thin.
Wall thickness is too thin here.
Fixed in v18.
Stop guessing which 3D file is the latest.
Sound familiar?
Email, Slack, and filenames weren't designed for engineering change control. Meshdiff gives your team one place to compare revisions, discuss changes, and approve the version that gets manufactured.
A review workflow your engineering team can actually use.
Compare
What changed?
See exactly what was added, removed, or modified.
Discuss
What needs fixing?
Pin comments directly to the geometry.
Resolve
Was it fixed?
Track feedback across revisions.
Approve
Is this the one we manufacture?
Give the team a clear final revision.
Every revision. Every comment. One approved version.
Every revision has a history. Every comment stays connected to the geometry. Everyone knows which version was approved.
Watch a revision move through the workflow.
Every decision stays on the record.
Send a 3D review without sending a CAD file.
Give customers, suppliers, and teammates a browser link. They can see exactly what changed and leave feedback without installing CAD software.
Share a ReviewLinks expire automatically. Free on the Community plan.
Built for teams that make physical things.
Hardware Startups
Review prototype revisions quickly without adding another heavyweight CAD system.
Engineering Teams
Keep design-review discussions tied to the actual geometry.
3D Printing Teams
Know exactly which revision is ready to print.
Manufacturers
Review customer revisions without requiring CAD software.
Powerful 3D comparison under the hood
The workflow above runs on a real comparison engine, not a mockup — here's what's actually happening under it.
Geometry diff
See exactly what was added or removed between two versions, highlighted in green and red.
- STL
- 3MF
- OBJ
Surface heatmap
See how far the surface actually moved, down to the millimeter, everywhere it changed.
- High precision
Printability check
Thin walls, steep overhangs, and unsupported areas get flagged automatically, before you print.
- FDM
- Pass / Warn / Fail
Shareable links
Share one link and anyone sees the exact same comparison — no account, no install.
- No signup
- 1–7 day expiry
3D-pinned comments
Click anywhere on the model to leave feedback exactly where it matters.
- Projects
Version history & approvals
Every upload is saved, with your team's review built in before anything ships.
- Team
Your 3D models are your IP.
Meshdiff computes diffs in your browser — comparing two models never requires uploading them. On Pro and Team, projects are stored so your history and comments persist, but your files are never sent to a third party.
Diff for free. Upgrade to review, approve, and ship with your team.
The comparison tool is free forever. Founding members get 50% off Pro and Team for 3 months.
Community
For makers exploring Meshdiff — 14-day free trial of Pro features, no card required
Sign Up- Compare OBJ, STL, and 3MF files
- Measure distances and radiuses tools
- Voxel diff, added and removed
- Adjustable tolerance and cross-section
- Shareable links, 1, 3, or 7 days
Pro
For individual engineers and designers
- Everything in Community
- Project workspaces
- Version history for every model
- Comment pins on 3D models
- PDF diff reports for client review
Team
For teams reviewing and approving physical designs
- Everything in Pro
- Shared projects with team members
- Comment threads with review states
- Version approval workflow
- Slicer profile snapshots and print logs
- Centralized billing and roles
"Version control for 3D models has always been awkward, since a diff of two binary STLs tells you nothing useful. Meshdiff does the job properly."
Your next revision is coming.
Make sure everyone knows what changed — and which version is approved.
Frequently asked
In Community, files stay on your machine when comparing or measuring — they never leave your browser. Files are uploaded only when you create a share link. Pro and Team upload all files to storage (for saved projects, history, and versioning).
