Updated June 2026 · runs 100% in your browser
STL to PNG
Render an STL model to a PNG image on your device. No upload, no sign-up, no limits.
Drop STL files here
or click to choose
🔒 Processed on your device · 0 bytes uploaded
Loads the 3D engine (~1 MB) on first use — cached after that.
How it works
Drop STL files and download a rendered PNG of each.
It all runs in your browser with a local copy of three.js — your model never leaves your device, and it stays free, unlimited and private.
About STL to PNG
Sometimes you just want a picture of a model — for a listing, a thumbnail or a document. This renders the STL with simple lighting and saves a PNG.
Frequently asked questions
How do I use STL to PNG?
Drop STL files and download a rendered PNG of each.
Can I use it as a thumbnail?
Yes — the PNG has a transparent background, so it drops cleanly into listings or docs.
Is my file uploaded?
No. It is converted on your device with a local copy of three.js; nothing is uploaded.
What is an STL file?
STL is the standard 3D-printing format. It describes a model's surface as a mesh of triangles but stores no color or texture, which is why it's used mainly for printing rather than rendering.
What is a PNG file?
PNG is a lossless image format that supports transparency. It preserves every pixel exactly — great for logos, screenshots, and graphics with sharp edges — at the cost of larger files than JPG for photographs.