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PNG to STL Converter

Turn PNG artwork into a raised relief with a solid base. Set its size and depth, preview the shape and download STL for free. For a logo cut to its outline, use the separate logo tool.

Free relief conversion · Transparent pixels stay at the base level; the rectangular plate remains.

PNG image to STL: an actual example

Compare the source with its relief. Load the 3D result to rotate it, or download the same STL.

Transparent PNG to a logo relief

80 × 80 mm · 2.5 mm relief · 2 mm base

Source image

STL result

The transparent area stays flat on the square base. The PNG's brightness creates the raised design; this is a relief, not a cut-out.

Download this STL Try the PNG sample

How to convert PNG to STL

1. Add your PNG

Use a clean logo, icon or drawing. Upload a PNG up to 8 MB, or try the transparent Quady sample.

2. Shape the relief

Set the width, raised depth and base thickness in millimeters. Invert depth if the wrong areas are raised.

3. Preview and download

Rotate the result and inspect the edges and small features. Download STL, then check its size and layer preview in your slicer.

Get a cleaner PNG relief

Crop the canvas

Empty margins still become part of the rectangular plate. Crop close to the artwork before uploading.

Check transparent edges

Fully transparent pixels stay flat. Faint colored edge pixels can still create a shallow rim; inspect the boundary before downloading.

Keep readable shapes

Brightness controls height. Clear, bold artwork reads better than tiny strokes or a design whose tones all look alike.

Need an outline or a full object?

A cut-out logo

For a badge shaped around its outline, use logo to STL. Trace the PNG, inspect detached pieces and choose a backing plate if those pieces need joining.

Already have vector artwork? SVG to STL keeps the original paths.

A complete figurine

For a subject with a back and sides, use the AI STL generator. AI estimates hidden shape; it does not get exact geometry from a flat image.

Compare the workflows on image to STL.

Before you print the relief

Confirm the dimensions

STL has no unit label. Interpret these coordinates as millimeters and confirm the width and thickness in your slicer.

Check fine detail

Inspect thin strokes and steep height changes. Details visible on screen may be too small for your nozzle or material.

Review the layers

Place the flat base on the print bed and check the layer preview. STL carries shape, without the source image's colors.

Follow the 3D printing workflow for the next steps.

PNG to STL questions

How do I convert PNG to STL?

Add a PNG, set the width, relief depth and base thickness, then rotate the preview and download STL. Lighter pixels rise higher by default; Invert depth reverses that direction.

Is this PNG to STL converter free?

Yes. Relief conversion, preview and STL download run on your device without an account or generation credits. AI generation is a separate workflow with its own model cost.

What happens to a transparent PNG background?

Fully transparent pixels stay at the base level. This relief keeps a rectangular backing plate; it does not cut the model to the PNG outline. Use the logo-to-STL tool for traced cut-outs.

Why are there bumps around the PNG edges?

Faint pixels and color changes can become raised detail. Use a clean, tightly cropped PNG with clear contrast. For a cut-out, inspect the trace threshold and detached pieces in the logo tool.

Will converting PNG to STL keep the colors?

No. STL stores the surface shape, without colors or textures. Brightness becomes relief height; color differences only matter through their brightness.

Can I make a complete figurine from PNG?

A relief does not reconstruct a back or hidden sides. Use AI image-to-3D generation for a complete object, then prepare its STL and inspect it in a slicer before printing.

More image and STL tools

Image to STLCompare relief and complete-object workflows.JPG to STLWork with photos and JPEG compression.View an STLOpen and inspect a file you already have.GLB to STLConvert an existing 3D model instead of an image.