QuickSTL Image to STL

What is QuickSTL Image to STL?

QuickSTL Image to STL is a free group of browser tools that turn photos, SVG logos and grayscale heightmaps into printable STL files. It covers four converters: a photo lithophane maker, a photo to coin maker, an SVG to 3D logo extruder and a heightmap to terrain generator. Each one shows a live 3D preview next to a few sliders, and the STL downloads without an account. The site's stencil maker has its own listing.

The lithophane tool sets size, maximum and minimum thickness, a flat or arced shape and an optional border. The PNG, JPG and WebP to STL pages reuse the same lithophane controls. The coin maker turns a portrait or pet photo into a raised relief with a rim and base, and offers optional AI depth mapping and background removal. The SVG tool extrudes a logo to a set thickness, can round the edges and can add a rectangle, circle or contour base plate. The terrain tool sets peak height, base thickness, smoothing, a flat margin and a cutoff that keeps low areas such as water flat.

The site says all processing happens in your browser, so photos are not uploaded. It suits makers who want quick single-color conversions for gifts, logos or tabletop scenery. The domain was registered in March 2026 and the tools export STL only, so multicolor prints need a different tool.

What you can make

• Flat and arced photo lithophanes
• Relief coins and medals from portraits
• Extruded 3D logos from SVG files
• Terrain models from grayscale heightmaps

How to use QuickSTL Image to STL

1. Pick a tool: lithophane, coin, SVG to 3D or heightmap to terrain
2. Upload a PNG, JPG or WebP image, or an SVG for the logo tool
3. Set size and thickness with the sliders and check the 3D preview
4. Turn on extras such as an arc, border, base plate or AI depth
5. Download the STL and slice it