The first check focuses on mesh health, file metrics, issue counts, and a print-ready score for common STL problems.
Online STL checker
Check STL files online before opening a slicer.
Start with browser-local checks for small files, then save reports or repaired outputs behind private account and entitlement controls.
Browser-local checking reduces friction for small files while the server path protects saved reports and paid downloads.
Clear file limits avoid runaway processing: anonymous checks start small and larger files belong behind account limits.
The product language stays tied to STL file, 3D printing, mesh repair, and print-ready diagnostics to reduce keyword noise.