Repeat file-review workflow
Batch STL and 3MF Checker
Check a collection, find files needing attention, and export a consistent report. Supported STL and mesh-based 3MF files stay in your browser; original files remain unchanged.
Check a collection
Free allowance: 3 files per collection. Each file: up to 5 MiB and 100,000 resolved triangles. 3MF expanded-package budget: 20 MiB. Files are checked one at a time to bound memory.
The 3MF example is a one-inch cube translated two inches on X by its build transform. Its resolved dimensions are 25.4 mm per side, without treating the STL unit choice as package metadata.
Example ground truth: a closed 20 mm cube (8,000 mm³), an open cube with one missing face (four boundary edges, volume unavailable), and malformed text. These are software fixtures, not physical print tests.
0 / 0 files completed. Queue idle.
Local report history
Optional storage on this browser only. No cloud history, cross-device storage or original model bytes. Clearing browser data removes reports.
Check collections and keep consistent reports
Single-file tools remain free. This workspace provides a small real collection allowance, combined exports and browser-local history. Paid subscriptions, cloud projects and cross-device history are not available.
| Capability | Free | Development offer preview |
|---|---|---|
| Files per collection | 3 | Up to 20, same per-file limits |
| Combined exports / local report history | Available | Available |
| Payments / cloud storage | Unavailable | Unavailable |
Method and next steps
STL unit assumptions and 3MF build transforms are recorded. Exact-coordinate welding precedes edge incidence, winding and connected-shell checks. Sampled wall rays review triangle centroids; they can miss thin features and do not replace a slicer. Fit uses nominal printer boxes at right angles, without brims, clips or excluded bed regions.
Review findings in STL preflight or 3MF preflight. Use STL revision comparison when checking replacement exports.