Most popular
STL Viewer
Inspect geometry, dimensions and triangle count.
Private 3D File Tools
Your 3D files,
fixed in your browser.
View, convert, repair, and optimize STL, OBJ, 3MF, GLB, PLY, FBX, GCODE files locally in your browser. Your files never leave your device.
✓ No signup ✓ No upload ✓ Full-quality output
Mesh health98%
18 issues repaired locally
◇
Never uploadedProcessed on this device
Start with the exact problem
The right tool, without the detour.
Every free tool opens immediately, solves one clear job and keeps your model on your device.
Open STL Viewer ↗
Fast convert
3MF to STL
Convert clean geometry without uploading your model.
Print-ready
STL Repair
Find and fix holes, bad normals and non-manifold edges.
Diagnose first
STL Checker
Detect holes, non-manifold edges and self-intersections.
Also live: OBJ Viewer · 3MF Viewer · OBJ to STL · GLB Viewer · GLB to STL · STL Validator · Make STL Watertight · Repair Non-Manifold STL · STL to OBJ · STL to 3MF · PLY to STL · PLY Viewer · FBX Viewer · 3D File Viewer · Reduce STL File Size · Simplify STL · STL Triangle Reducer · G-code Viewer · G-code Visualizer · G-code Simulator · G-code Layer Viewer · G-code Toolpath Viewer
Private by architecture Your design stays
Your design stays
your design.
Most converters send your model to a remote server. MeshWrench processes it with JavaScript, WebAssembly and your own device instead.
- 01Select a fileYour browser reads it directly from your device.
- 02Process locallyViewing, conversion and repair happen on-device.
- 03Save the resultYour browser creates the download. We never receive the model.
Your fileOn your device
Never leaves
Your browserProcesses locally
Download
Finished fileSaved by you
The conversion path Useful for one file.
Useful for one file.
Powerful when it becomes forty.
Free browser tools
Finish the file in front of you.
Use the complete single-file workflow without creating an account or sacrificing output quality.
- Unlimited single-file use
- Private local processing
- Full-quality downloads
MeshWrench Pro
Give the repetitive work back.
Batch the folder, reuse your settings and move on to the part of the job that needs you.
- Batch entire folders
- Reusable repair presets
- Large-file and offline modes
- No ads
$39once
yours forever
See the Pro promise → yours forever
✓
Conversion completeproduct-shell.stl18.4 MB · ready to download
The sales moment that makes sense
“Need to convert 37 more?”
Pro appears after the free tool has already solved the first problem—exactly when batch processing becomes valuable.
✓ No crippled free tier✓ No subscription anxiety✓ Clear time-saving value
Before you open a fileClear answers.
Clear answers.
No fine print.
Privacy and pricing should be obvious before you trust a tool with important work.
Are my 3D files uploaded?+
No. Processing happens locally in your browser. Your files never need to leave your computer.
Do I need an account?+
No account, email address or sign-in is required to use the free single-file tools.
What is included in Pro?+
Pro is designed for repeat work: batch folders, reusable presets, larger queues, offline use and an ad-free experience.
Is Pro a subscription?+
No. The planned price is $39 once for lifetime access to the Pro workflow.
Which formats are supported?+
MeshWrench currently reads and writes STL, OBJ, 3MF, GLB, PLY, FBX, GCODE, across 26 free browser tools, with more formats added only when they can be handled reliably in-browser.
Your file. Your browser. Your call.Start with the problem
Start with the problem
you need solved today.
No signup. No upload. No waiting.
Choose a free tool →