StlFixTool is a small independent tool for people who need a 3D file converted, inspected, or repaired without signing up for a subscription.
Practical tools, clear limits
StlFixTool helps move between common 3D file formats and address routine mesh problems. The goal is straightforward: upload a supported file, inspect a preview when the tool provides one, and pay once only if you want the full-quality conversion or repair download.
The previews are for inspection and may be reduced in resolution. Mesh conversions can change how geometry is represented, and repairs can alter a mesh. In particular, STL to STEP produces faceted geometry; it does not reconstruct the original editable parametric CAD design. Users should validate files in the applications and processes where they will be used.
No subscription
Paid tools charge per file and do not require an account or recurring plan. Free browser tools include local STL viewing and basic STL transformations, while the STEP Viewer creates a server-side low-resolution preview. Each tool page explains what it processes and what its output can and cannot do.
Unpaid jobs and files are deleted within 60 minutes. Paid job files are retained for up to 7 days for re-download unless you delete them sooner. StlFixTool does not use uploaded files to train AI models. For data handling details, see the Privacy Policy.
Contact
For questions about a job, the service, or a file that could not be downloaded, contact StlFixTool at contact@stlfixtool.com . Include a job identifier when relevant, but do not send confidential design files unless you are authorized to share them.