Simple pricing
The converter is free forever. Pro is for makers who want AI 3D models, fancy lithophanes, multicolour prints and a commercial licence.
Free
$0 forever
No signup. No watermark. Runs on your device.
Open the converter- PNG, JPG, WebP & SVG to STL
- Heightmap, extrude & vector modes
- Flat lithophanes
- Up to 1024 px resolution
- Personal use
Pro
MOST POPULAR$59.99 / year
Just $5/month, billed yearly.
- AI photo → true 3D model (100 credits/mo)
- Curved, cylinder & lamp-shade lithophanes
- Colour (CMYW) lithophanes
- Name keychain & sign maker
- Multicolour 3MF for Bambu AMS / Prusa MMU
- Up to 4096 px resolution
- Batch convert up to 50 images
- 3MF, OBJ & GLB export
- Commercial licence - sell your prints
Compare plans
| Feature | Free | Pro |
|---|---|---|
| PNG, JPG, WebP, SVG to STL | ✓ | ✓ |
| Heightmap, extrude, SVG vector modes | ✓ | ✓ |
| Flat lithophanes with frame | ✓ | ✓ |
| Live 3D preview, watertight STL | ✓ | ✓ |
| Files processed on your device | ✓ | ✓ (AI: deleted after processing) |
| Max resolution | 1024 px | 4096 px |
| AI photo → true 3D model | - | 100 credits / month |
| Curved, cylinder & lamp lithophanes | - | ✓ |
| Colour (CMYW) lithophanes | - | ✓ |
| Name keychain & sign maker | - | ✓ |
| Multicolour 3MF for Bambu AMS / MMU | - | ✓ |
| Batch convert | - | Up to 50 images |
| Export formats | STL | STL, 3MF, OBJ, GLB |
| Licence | Personal use | Commercial - sell prints & files |
| Watermark / signup | None / none | None / account |
Prices in USD. Sales tax may apply. Extra AI credits: 100 for $4.99 (Pro only).
Pricing FAQ
Is the PNG to STL converter really free?
Yes, free forever with no watermark, signup or daily cap. It runs in your browser, so it costs us almost nothing to offer.
What is an AI credit?
One AI credit makes one model with the Standard (TRELLIS) engine. The High detail (Hunyuan3D 3.1) engine uses 8 credits per model. Pro includes 100 credits every month.
What if I run out of credits?
Buy a top-up of 100 credits for $4.99. Top-up credits never expire while you're subscribed.
Can I cancel anytime?
Yes. Cancel from your account and you keep Pro until the end of the period you paid for.
Can I sell what I print?
Pro includes a commercial licence to sell prints and STL/3MF files you create, provided you own the rights to the source image.