Image to STL — turn a PNG, JPG or logo into a 3D print
Drop a picture and get a printable model: trace a logo into a crisp cut-out, or raise a photo into a coin relief. Keychains, plaques, stamps and badges, with a watertight STL and an SVG outline. Free, private, nothing uploaded.
Model
Traces the outline of a logo, icon or text and extrudes it — crisp edges, small files.
Tracing
Nothing showing? Drag Threshold — it decides which pixels count as solid — or switch Invert.
Base & mounting
Without a base the traced shapes are cut out on their own.
Tips
- Logos and icons trace best from high-contrast black-on-white artwork — drag Threshold until the preview matches the shape you want.
- Photos belong in Relief mode; tracing a photo produces confetti, not a model.
- Keychains: keep the artwork at least 1.5 mm thick and the tag 2–3 mm so the ring hole doesn’t tear.
- Stamps must be mirrored — the preset does it — and print best with the relief 2–3 mm proud of the base.
- Print flat on the bed; a raised logo on a plate needs no supports.
Capabilities
What the converter does
- Two ways to convert: Silhouette traces a logo or icon into crisp vector outlines and extrudes it, Relief raises a whole photo into a coin-style surface.
- Real tracing, not a pixel grid — marching-squares contours with holes detected automatically, so the middle of an “O” stays open and letters keep their counters.
- Presets for the things people actually print: logo cut-out, keychain with a ring hole, plaque, mirrored stamp, round coin and photo relief.
- Base plates (rounded rectangle or round) with an automatic hanging-hole tab that resizes the plate so the hole always fits.
- Watertight STL every time — closed, outward-facing solids that slice without repair — plus an SVG outline export for laser cutting or vinyl.
- 100% in your browser: the picture is read on your device, never uploaded. No account, no watermark.
Process
How it works
- Drop an imagePNG, JPG, WebP, GIF or BMP. High-contrast logos trace best; photos work in Relief mode. Nothing is uploaded.
- Pick a presetLogo, keychain, plaque, stamp, coin or photo relief — then fine-tune the size, height, threshold and base.
- Download and printExport a watertight STL for the printer, or an SVG outline for a laser cutter. Print flat on the bed; raised artwork needs no supports.
Which mode
How to convert a PNG or JPG to STL — silhouette vs relief
There are only two sensible ways to turn a flat picture into a solid, and picking the right one is most of the job. Silhouette suits anything with a clear shape — a logo, icon, symbol, lettering, a stencil: the tool thresholds the image, traces the boundary into true vector contours (holes and all) and extrudes it, giving crisp edges and a small file. Relief suits photographs and anything with smooth shading: brightness becomes height, so the picture rises out of a flat back like a coin or a bas-relief plaque. Tracing a photo produces hundreds of speckled islands, and relieving a logo wastes triangles on a shape with only two heights — the preview makes the difference obvious in a second.
Getting a clean trace
Why your logo traces badly — and how to fix it
Almost every bad trace comes down to contrast. Drag the Threshold slider until the preview shows the shape you want: it decides which pixels count as solid. If the artwork is light on a dark background, switch Invert. Anti-aliased edges and JPEG noise leave crumbs around the outline — raise “Ignore specks” to drop them, and Smoothing to relax the contour without rounding off corners. A logo with a transparent background works out of the box: transparency is composited over white first, so only the visible artwork traces. If the result still looks ragged, the source is probably a small or heavily compressed image — trace from the largest version you have, ideally the original PNG or an SVG through the SVG-to-3D tool.
Notes
Good to know
- Silhouette mode traces one threshold, so it produces flat, single-height shapes — greyscale detail belongs in Relief mode.
- A logo raised on a base plate is exported as the artwork and the plate sitting flush against each other; slicers treat them as one part.
- Relief detail is capped by the sample resolution — high detail on a big plaque means a large STL, and the readout shows the file size before you download.
- Very noisy photos or scans can trace into hundreds of shapes; the tool warns when that happens so you can raise the speck filter or switch modes.
FAQ
Questions, answered
How do I convert an image to STL?
Drop a PNG or JPG here, choose Silhouette for a logo or Relief for a photo, set the size and height, and download the STL. Everything runs in your browser — no upload, no account.
Is my image uploaded to a server?
No. The picture is decoded and turned into geometry entirely on your device, so private photos and client logos never leave your machine.
What is the difference between silhouette and relief?
Silhouette traces the outline of high-contrast artwork and extrudes it to one height — crisp and light. Relief maps brightness to height so a whole photo becomes a raised surface, like a coin or a bas-relief plaque.
Can I make a keychain from a logo?
Yes — the Keychain preset raises the traced logo on a rounded tag and adds a 4 mm ring hole, growing the tag automatically so the hole always has material around it.
Why is my traced shape full of specks?
JPEG noise and anti-aliased edges cross the threshold in places you don’t want. Raise “Ignore specks” to drop tiny islands, adjust Threshold, and add a little Smoothing. For photographs, use Relief mode instead.
Is the STL watertight?
Yes. Both modes emit closed, consistently outward-facing solids that slice without repair — the same geometry checks the STL repair tool applies.
Can I get a vector outline instead of a 3D model?
Yes. In Silhouette mode the SVG outline export gives you the traced contours at true millimetre scale, ready for a laser cutter, vinyl cutter or CAD.
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