Image to STL converter for any photo or picture
PNG, JPG, WebP, HEIC or SVG: drop in any image and PrintPal's AI turns it into a closed, printable STL. No CAD, no photogrammetry rig, no flat heightmaps.
- 400,000+ makers
- 2M+ models generated
- No credit card to start
knight.png
knight.stl
Real PrintPal output
Used by makers, engineers, and educators at
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See a real result in 3D
This model was generated by PrintPal from the image beside it. Spin it, then switch to STL (no color) to see exactly what a single-color print gets.
Input: knight.png, 1024 pxA painted-style tabletop hero: sword, shield, cape and visor slits came out as one solid body with its cobblestone base.
- Generated mesh
- 998,810 triangles
- Watertight
- Yes, 1 body
- Detail setting
- High, full color
- This preview
- 59,918 tris, 403 KB
Each example is one AI-generated 1024 px PNG run through PrintPal's full-color image-to-3D at high detail, with no editing afterwards. Mesh checks were run on the raw download with trimesh. The preview is simplified to about 60,000 triangles so it loads fast; your download keeps full detail.
Image to STL: what actually happens
An image is flat and an STL is a closed surface made of triangles. Getting from one to the other means inventing the depth, sides and back the picture never showed. There are several ways to do it, and the right one depends on what you are printing.
AI reconstruction, which is what PrintPal's generator does, gives you a real object you can hold: a figurine, a bust, a planter. Heightmap relief gives you a flat panel where brightness becomes height, ideal for lithophanes. Extrusion pushes a 2D outline straight up, the right choice for cookie cutters, signs and logos. The comparison below shows which is which.
Updated by the PrintPal teamOutput: STL
Stereolithography (Standard Triangle Language)
- Stores
- Triangle geometry only
- Color
- No
- Units
- None; slicers assume millimetres
- Size (our 1M-triangle test)
- 49.9 MB binary, 303 MB ASCII
- Opens in
- Every slicer, CAD tool and Blender
- PrintPal plan
- Free and up
How to convert an image to STL
-
1
Upload any image
Drag, paste or tap to choose. PNG, JPG, WebP, HEIC, SVG, AVIF, GIF and BMP all work.
-
2
Sign in or create a free account
Your image comes with you through sign-up.
-
3
Generate
About 30 to 60 seconds at Draft quality; longer for Refined and Production.
-
4
Download the STL
Open it in any slicer and set the size in millimetres.
Tips for a better STL
Pick the right picture
One object, plain background, sharp focus, whole object in frame, shot or drawn at a 3/4 angle.
Any common format works
See the format table. TIFF, PSD and RAW need exporting to PNG or JPG first.
Think about print size
Features thinner than about 1 mm at final size get lost on a 0.4 mm nozzle. Print small detailed models on resin, or larger on FDM.
From a phone photo to a printed object
Casual photos, not studio shots. Each one was generated on PrintPal and printed on a desktop printer.
Photo
AI model
Print
Store-bought vase to printed planter
A casual photo of a ceramic face vase, the generated model, and the white PLA print holding up just as well.
In the slicer
Print
Diorama straight to the slicer
A detailed cabin diorama loaded into Bambu Studio without repairs, then printed at a few centimetres across.
Which kind of STL do you need?
Five different things are sold as “image to 3D”. Pick the one that matches what you want to hold in your hand.
| AI reconstruction | Heightmap relief | Extrusion | Photogrammetry | |
|---|---|---|---|---|
| Full 3D object from one image | Yes | No, flat panel | No, flat profile | No, needs 30+ photos |
| Keeps exact dimensions | Proportions only | Yes | Yes, from vectors | Yes |
| Skill needed | None | None | A clean vector file | Careful shooting |
| Time | About a minute | Seconds | Seconds | Hours |
| Color output | Yes (Pro) | Light and shadow | One color per shape | Yes |
| On PrintPal | AI generator | Lithophane, filament painter | SVG extruder | Scanning tips |
One model, every format
We exported the same 998,810-triangle generation to each format and measured the files.
| Format | File size | Color | Units | Typical use |
|---|---|---|---|---|
| STL (binary) | 49.9 MB | No | None (slicers assume mm) | Any slicer |
| STL (ASCII) | 303 MB | No | None | Legacy CAD; avoid |
| OBJ + MTL + texture | 84.9 MB | Texture or vertex colors | None | Blender, sculpting |
| GLB (with textures) | 40.5 MB | Yes, PBR textures | Metres | Web, AR, games |
| 3MF (zipped) | 21.0 MB | Yes, per triangle | Millimetres | Bambu Studio, OrcaSlicer, PrusaSlicer |
| PLY (binary) | 27.3 MB | Vertex colors | None | Scans, point clouds |
Same 998,810-triangle knight exported with trimesh; the GLB is the download as it came from PrintPal. The 3MF holds geometry only; a painted multi-color 3MF adds a little for the color data.
After you download the STL
The checklist we use before printing a generated STL.
- Import it into Bambu Studio, OrcaSlicer, PrusaSlicer or Cura and set the size in millimetres. STL has no units, so PrintPal scales tiny models up to at least 80 mm on the longest side; resize to taste.
- Lay the flattest side on the bed, or use the slicer's auto-orient.
- Turn on tree supports for overhangs steeper than about 45 degrees, such as chins, ears and arms.
- Keep walls and small features at least 0.8 mm thick (two perimeters on a 0.4 mm nozzle) so detail survives.
- Printing in resin? Hollow it with about 2 mm walls and add drain holes.
- If the slicer flags errors, run the file through the free mesh repair tool.
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Free
For trying image to 3D
Free forever · no credit card
- 10 AI generations / month
- Image to 3D
- Draft quality
- STL & OBJ download
- Free browser tools: SVG extruder, lithophanes, converter
- Full color, GLB & multi-color 3MF
- Refined & Production quality
- Commercial rights
Pro
For makers & sellers
Billed monthly · cancel anytime
Secure checkout with Stripe
- 200 AI generations / month
- Full-color models
- GLB & PLY export
- Multi-color 3MF for AMS (2 to 8 colors)
- Refined & Production quality
- 20 Production models / month (40 in month one)
- Text to 3D and AI model edits
- Priority queue
- Commercial rights
Studio
For print farms & power users
Billed monthly · cancel anytime
Secure checkout with Stripe
- Everything in Pro, plus
- 500 AI generations / month
- 60 Production models / month (80 in month one)
- Built for steady custom-order volume
Image to STL FAQ
Is "picture to STL" the same as "image to STL"?
Which image formats can I convert to STL?
Can I convert an image to STL for free?
How accurate is image to STL?
Is the STL watertight?
Can I print it on a resin printer?
How long does a conversion take?
Can I sell prints of the models I make?
Still have questions? Contact our team
Learn more
Image-to-3D best practices
What makes a source image convert well, with examples.
Preparing AI models for printing
Scale, orientation, repair and supports for generated meshes.
3D printing file formats
STL, 3MF, OBJ, STEP and G-code compared.
Resin vs FDM printing
Which printer suits figurines, busts and functional parts.
Ready to convert your image to STL?
Drop in an image and download a print-ready model in about a minute. Start free, or go Pro for full color, GLB, multi-color 3MF and commercial rights.