File converters
Free browser-based converter for 3D model files and image-to-STL
Ahrefs Domain Rating set in type 3 Nov 2026, reset 1 Nov 2026.
Convert images and 3D files between STL, OBJ, GLB, glTF and 3MF formats in your browser with no signup required.
STL File Converter is a free online tool for converting 3D model files between formats makers use: STL, OBJ, GLB, glTF and 3MF. It also converts images to STL, creating photo reliefs and extruded logos. Every conversion runs entirely in your browser on your device; files are never uploaded to a server. The tool requires no signup, account or download limits for free conversions.
The converter supports heightmap reliefs for photos, silhouette extrusion for logos, and mesh format conversion up to 50 MB. A separate AI generation feature is available with paid credits (20 credits per generation), but all free tools operate locally in the browser.
Pricing model: Freemium
Free for image-to-STL conversion, 3D file format conversion, and preview. AI generation: Starter $6.90 (60 credits), Standard $14.90 (200 credits), Professional $29.90 (500 credits). One-time payment, no subscription. 20 credits per AI generation.
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Measured after STL File Converter went live on Zivaro Launch on 1 November 2026.
Day 2 since launch. Next receipt: day 30, 1 Dec 2026. These are measurements, not proof of cause: many things move these numbers. Figures we have not measured are left out.
Heightmap reliefs, silhouette extrusion and mesh format conversion are free and need no account. AI generation is a separate paid-credit workflow using 20 credits per generation, and you do not need to buy credits to use the free browser tools.
The free heightmap, extrusion and format tools process files locally in your browser. AI generation is a separate workflow that uploads the image for server-side processing, needs an account and costs 20 credits per generation.
The image tool accepts PNG, JPG and WEBP up to 10 MB and exports STL. The separate format converter accepts STL, OBJ, GLB, glTF and 3MF up to 50 MB, and exports STL, OBJ or GLB, but does not export 3MF.
STL stores geometry only, so image colors become height or a silhouette rather than printable color. Before printing, check the scale, wall thickness, mesh and supports in your slicer, as a successful download is not a guarantee that every printer can reproduce every detail.
No. Unused credits stay on your account until you spend them.
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STL File Converter has a free listing. The owner can unlock the full profile with a paid launch for $5:
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