Open your .stl files.
Choose GLB, glTF or USDZ.
Press Convert and save.
Yes. STL is in millimetres and GLB and USDZ are in metres, so the size is converted for you.
No. Everything happens inside your browser, on your own device. The site's security settings stop the page from sending your files anywhere.
Yes. No sign-up, no daily limit and no watermark.
Yes, in Safari, Chrome and other modern browsers. You can open files from the Files app or your downloads, and save the results back.
Customer lists, contacts, bank exports and the routes you run from home stay on your phone or computer from start to finish.
How it stays private100 converters for the files people use every day.