Make any file 3D print-ready
Convert images and 3D models to STL or 3MF, fix broken meshes, and check printability — free, right in your browser. Your files never leave your device.
Convert anything to a printable file
Turn flat images into 3D reliefs and stencils, or convert CAD and mesh formats into clean, watertight STL and 3MF files your slicer will accept.
Image to STL Converter
Photos, logos & drawings to printable 3D reliefs
STEP to STL Converter
CAD parts to mesh, tolerances preserved
STL to 3MF ConverterSoon
Multi-color, Bambu-ready packaging
Repair and check — before you waste filament
Half of failed prints start with a broken mesh. Fix holes, flipped normals and non-manifold edges, then verify wall thickness and printability.
Broken meshWatertightSTL Repair Tool
Make any mesh watertight in seconds
Printability CheckerSoon
Wall thickness, overhangs & size limits
Simplify STLSoon
Shrink oversized files without losing detail
Create from scratch — text or photos
No model yet? Turn typed text into signs and labels, or a photo into a color lithophane — free, in your browser.
Text to STL Generator
Signs, name tags & embossed labels
Color Lithophane Maker
Filament-painting 3MF from any photo
Cookie Cutter GeneratorSoon
Any outline or logo into a bakeable cutter
Selling prints? Price them like a business
Material, power, machine wear, failure rate, marketplace fees — know your real cost per print before you quote.
Coming soon: batch processing, quote PDF export & commercial license
How it works
Open a file
Image, mesh or CAD. Nothing uploads; processing runs in your browser via WebAssembly.
Convert, repair or check
With print-safe defaults: watertight, correct scale, manifold geometry.
Download and print
Get a slicer-ready STL or 3MF and hit print.
Why PrintReady3D instead of a random converter?
Built for rendering, not printing
- Uploads your file to someone else’s server
- Output looks fine on screen, fails on the printer
- One tool per tab — convert here, repair somewhere else
- Free until the paywall appears mid-task
Built for the print bed
- Private by design — files never leave your device
- Every output is watertight, scaled and manifold
- One workbench: convert, repair, check, price
- Free means free — no account, no paywall halfway through a task
Questions, answered
Is PrintReady3D free?
Yes — every tool on the site is free to use, with no account needed. If we add paid options later, such as batch processing or an API, the free tools stay free.
Do my files get uploaded to a server?
No. All tools run entirely in your browser using WebAssembly. Your files never leave your device — nothing is uploaded to any server.
How do I convert an image to an STL file?
Drop a JPG or PNG into the Image to STL Converter, choose relief (heightmap) or stencil mode, adjust thickness, and download a watertight STL — about 30 seconds end to end.
What is the difference between STL and 3MF?
STL stores only a surface mesh; 3MF also packs color, materials, units and plate layout. For multi-color printing on Bambu or Prusa machines, export 3MF.
Will repaired files work in Cura, PrusaSlicer or Bambu Studio?
Yes — repair outputs watertight, manifold meshes with normals fixed, which is exactly what slicers require. If a file still fails, send it to us and we will fix the tool.
Can I sell prints made from my files?
Yes. Files you convert, repair or create with these tools are yours — commercial use is fine, including prints you sell on Etsy or at markets.
Which file formats are supported?
Images: JPG, PNG, SVG, WebP. Meshes: STL, OBJ, PLY, GLB, 3MF. CAD: STEP/STP. Output: STL, 3MF, OBJ, PNG renders.
Your next print, ready in minutes
Open a file and get a watertight, slicer-ready STL or 3MF — free, private, in your browser.
Open a file