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PNG to STL Converter

Create STL relief or silhouette geometry from a PNG without uploading it.

Input image

PNG

Choose file: png

Choose a local image to create relief geometry.

Quick guide

Start with the defaults, check the preview, then adjust only what affects your print.

Mode: Photo relief: Turn image brightness into raised depth. Logo / outline extrude: Give a high-contrast outline a flat thickness.
Width (mm): Sets the exported STL’s physical width. The preview auto-fits, so its on-screen size may look unchanged.
Relief height (mm): Sets the height variation above the base. Larger values create a deeper relief.
Mesh quality: Standard: Best for fast previews, simple shapes, and smaller STL files. Detailed: Best for everyday photo reliefs and most 3D prints, balancing detail and browser performance. Ultra-detailed: For small text, precise heightmaps, and rich textures; creates many triangles and may make the browser unresponsive.
Base thickness (mm): Adds a solid backing below a photo relief so the result is a closed printable solid.
Threshold: Controls which pixels are included in silhouette mode. Higher values keep only lighter areas; lower values also include darker areas.
Invert brightness: Swaps light and dark height mapping so dark pixels become raised instead of recessed.
Smooth image sampling: Softens pixel noise and abrupt height changes before the mesh is built.

PNG pixels are sampled locally; transparency is composited by the browser canvas.

Are my files uploaded?

No. Model parsing, preview, and export run in your browser.

Is the conversion lossless?

No format conversion is described as lossless. Review the format-specific warnings above before using the output.

What is the file-size limit?

100 MB is a safety ceiling, not a guarantee. Mobile devices may need substantially smaller files.