Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your GLB 3D models to STL format for seamless 3D printing preparation. This tool is essential for designers and engineers who need to transfer web-ready assets to manufacturing-ready formats.
GLB is a self-contained 3D format that includes textures and material data, often used in AR and web applications. In contrast, STL is the industry standard for 3D printing, representing only the geometry of the surface as a triangular mesh. When you convert GLB to STL, our system strips away the color and texture information, focusing entirely on the structural mesh data necessary for slicer software to generate G-code.
The conversion process is lossless regarding the geometry; the precision of your original 3D model is fully preserved in the resulting STL file.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Meshes and scenes for 3D printing, games, and CAD.
Common extensions: OBJ, STL, GLTF, GLB, FBX, PLY
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
