Photo Relief
Brightness becomes height. Turn a portrait, pet photo or artwork into an embossed 3D relief you can print as wall art, a plaque or a stamp.
PortraitsPet photosWall artEmbossed plaques
Convert Images to 3D Printable STL Files
Free online image to STL converter — turn any PNG or JPG into a watertight STL in seconds: logo extrusions, photo reliefs, lithophanes and keychains.
Free forever
100% in-browser — no upload
Watertight binary STL
No signup
100% on-device
Everything runs locally with Canvas & WebGL. Your photos and logos are never uploaded anywhere.
Rebuilds as you drag
The mesh regenerates in tens of milliseconds. No queue, no rendering farm, no waiting.
Watertight binary STL
Closed manifold mesh, real mm dimensions — slices cleanly in Cura, PrusaSlicer and Bambu Studio.
$0, no strings
No account, no watermark, no file limits. Convert as many images to STL as you like.
01 · Overview
A free image to STL converter built for makers
Turn any picture into a print-ready 3D file in seconds — free, private and right in your browser.
ImageToSTL.online is a free image to STL converter that turns everyday PNG and JPG photos into 3D-printable files without installing software or learning a modeling app. It's built for the exact jobs people search for as png to stl, jpg to stl, logo to stl and photo to stl — drop in a picture, and this image to STL online tool does the rest, with no upload, no account and no file limit.
Searching for an image to STL AI shortcut around Adobe Illustrator, Photoshop or Blender? This converter skips the learning curve on both sides. Four fast, deterministic modes — relief, extrude, lithophane and keychain — turn a flat 2D image to STL as a heightmap or silhouette, exactly what logos, portraits and QR codes need, while AI Full 3D reconstructs a complete model from a photo of a real object.
02 · Five ways to convert
One image, five kinds of 3D output
Each mode is tuned for a real job — not a generic converter setting. Every preview below is a live 3D model, spinning right in the page. Pick the one that matches what you want to hold in your hand.
Logo Extrude
Traces the silhouette of your logo, icon, text or QR code and extrudes it into a clean solid — raised on a base plate or cut out on its own.
LogosIconsQR codesSigns & badges
Lithophane
Dark pixels become thick, bright pixels become thin. Print it in white PLA, hold it against a lamp and watch the photo appear in glowing detail.
Family photosNight lightsWindow artGifts
Keychain Maker
Your logo or avatar on a rounded tag, complete with a hanging hole ready for a keyring. The fastest way from image to a gift-ready print.
KeychainsBag tagsMerchParty favors
AI Full 3D
Reconstructs a complete, walk-around 3D model from a single photo — not a flat relief. Best for toys, figures, products and other real objects.
Toys & figuresProductsCollectibles360° scans
03 · How it works
From image to STL in three steps
No plugins and no upload queue — here's exactly how to convert an image to STL, from a photo on your desktop to a slicer-ready file.
Drop in any image
Drag a PNG, JPG, WebP or SVG onto the page — or paste it straight from your clipboard. Transparent PNGs give the cleanest logo results. Nothing is uploaded, so even a folder of photos converts instantly and privately.
Pick a mode & fine-tune
Choose relief, extrude, lithophane or keychain, then drag the sliders. The 3D preview updates instantly so you always know what you'll print. Depth, smoothing and size are all adjustable in real millimeters.
Download & print
Grab the watertight binary STL, open it in your slicer and hit print. Real millimeter dimensions are baked in — no rescaling guesswork. It works the same way in Bambu Studio, Cura, PrusaSlicer or Orca.
03 · Showcase
9 things makers print from images
Real, live 3D models — generated the same way your own image would be, then set spinning so you can see every side.
Logo keychainsBrand merch and giveaways printed in an hour.
Lithophane night lightsFamily photos that glow when backlit.
Photo relief wall artPortraits and landscapes as embossed panels.
QR code plaquesScannable menus, Wi-Fi cards and booth signs.
Desk signs & badgesExtruded logos and name plates for events.
Stamps & embossersInvert a design to press into clay or wax.
Cookie cuttersSilhouette outlines extruded into sharp, thin walls.
Pet portrait medallionsA pet photo embossed onto a round plaque.
Wedding monogram toppersCut-out initials and rings for cakes and favors.
04 · Community
What makers say about ImageToSTL.online
From logo extrusions to lithophane gifts — makers share what they like most about our free, in-browser converter.
ImageToSTL.online is really easy to use. I drop in a PNG, pick extrude mode, and the STL is ready in seconds. White filament makes the results look even better than I expected.
Marcus T.
Hobbyist maker
The live 3D preview and sliders on ImageToSTL.online get me 90% of the way there on the first try. I tweak depth and smoothing until the mesh matches what I want — then straight into Bambu Studio.
Elena R.
Bambu Lab user
I used the lithophane mode on ImageToSTL.online for holiday gifts. My first print came out great — the backlit photo effect is now my go-to present for family.
James W.
Gift maker
We printed 150 wedding favors with ImageToSTL.online — no modeling skills needed. PNG to STL in the browser, batch-sliced, and done. Saved us days of design work.
Priya S.
Event planner
I turned our Wi-Fi QR code into a fridge magnet with ImageToSTL.online's keychain mode. Guests scan it instantly, and nothing leaves my network — it all runs locally in the browser.
David L.
Airbnb host
ImageToSTL.online helped me print a large lithophane of my grandparents for Christmas. The relief mode nailed the detail, and my mom was speechless when she saw it lit up.
Nora C.
Family photographer
05 · FAQ
Questions, answered
Is this image to STL converter really free?
Yes. Every mode — photo relief, logo extrude, lithophane and keychain — is free with no watermarks, no account and no conversion limits. The whole tool runs in your browser, so there are no server costs to pass on to you.
Do you upload or store my images?
No. Your image never leaves your device. All processing happens locally in your browser using the Canvas and WebGL APIs. Once the page has loaded, the converter even works offline.
Which image formats can I convert to STL?
PNG, JPG/JPEG, WebP, SVG, GIF and BMP all work. A PNG or SVG with a transparent background gives the cleanest result for logos and keychains, while any photo works for reliefs and lithophanes.
What kind of images work best?
High-contrast images with clean silhouettes and simple backgrounds convert best. Logos, icons, QR codes and text are ideal for the extrude and keychain modes. Portraits, pets and landscapes shine in relief and lithophane modes.
What is a lithophane?
A lithophane is a thin 3D printed panel whose thickness varies with the brightness of a photo. Held against a light, the thin areas glow and the image appears. Print in white PLA, 100% infill, standing vertically for the best result.
Is the exported STL watertight and printable?
Yes. The generator builds a closed, manifold mesh with a solid base, walls and bottom, and exports it as a binary STL that slices cleanly in Cura, PrusaSlicer, Bambu Studio, Orca and other slicers.
Can I use the STL files commercially?
Yes. The models you generate belong to you, and you can print or sell them freely — just make sure you own the rights to the image you convert.
How do I 3D print a logo keychain from an image?
Choose Keychain mode, drop in your logo, set the hole diameter to around 4 mm and the base to about 2.4 mm, then download the STL. Print it flat on the bed. For a two-color effect, pause the print at the layer where the raised logo starts and swap filament.
Do I need Adobe Photoshop, Illustrator or Blender to convert an image to STL?
No. Adobe apps and Blender can build 3D models from images, but they take plugins, learning curves and often a subscription. This converter does the whole 2D image to STL job online — just drop in your file, adjust a few sliders and download a print-ready STL.
Is this an AI image to STL converter?
No AI is involved, and that's deliberate. Free AI image-to-3D generators guess at geometry and often produce noisy meshes that need cleanup. For logos, QR codes, reliefs and lithophanes, a deterministic heightmap or silhouette conversion gives cleaner, predictable, watertight results every time.
Can I print the STL on a Bambu Lab printer or share it on MakerWorld?
Yes. The exported binary STL opens directly in Bambu Studio and slices cleanly for any Bambu Lab printer, as well as Prusa, Creality and other machines. The models you generate are yours, so you're free to upload them to MakerWorld, Printables or Thingiverse.
06 · About the tool
A focused image to STL converter for 3D printing
Most "img to STL" tools promise to turn any photo into a full 3D model — and then hand you a noisy mesh you can't print. This free online image to STL converter takes the honest route: STL files store shape, not color, so the best way to convert a 2D image to STL is to treat it as a heightmap or a silhouette. That's exactly what makers actually search for when they type png to stl, jpg to stl, logo to stl or photo to stl: a keychain, a lithophane, an embossed relief or a clean extruded logo.
It's also why this tool skips the AI route. AI image-to-3D generators are impressive for characters and props, but for flat artwork they hallucinate geometry — and Reddit threads on r/3Dprinting and r/functionalprint keep reaching the same conclusion: for logos and photos, a deterministic heightmap conversion beats an AI guess. You don't need Adobe Illustrator, Photoshop or Blender either; the whole pipeline runs here in the page, with nothing to install and no subscription.
Because the conversion happens entirely in your browser, there's no file-size upsell and no privacy trade-off. The mesh generator produces closed, watertight geometry with real millimeter dimensions, a configurable base thickness and smoothing — so what you see in the live 3D preview is exactly what your slicer receives, whether that's Bambu Studio, Cura, PrusaSlicer or Orca. The STL is yours to keep, print and share on MakerWorld or Printables.
Whether you're converting a company logo into a badge, a pet portrait into a relief, a family photo into a lithophane or a QR code into a scannable plaque, you can go from image to printable STL in under a minute — free, offline-capable and with no account required.