Convert PNG to STL: Turn 2D Images into 3D‑Printable Models

When you convert a PNG to STL, you are turning a flat 2D raster image into a 3D mesh that a slicer can print. A PNG stores colored pixels; an STL stores triangles in 3D space. During conversion, pixel information (often brightness or contrast) is used to infer depth, thickness, and edges, creating geometry you can slice and print.

With STL Buddy you can upload PNG and JPG image files up to 10MB. For the best PNG‑to‑STL conversion results, start with a high‑resolution image that has strong contrast and clear shapes—especially for logos and icons.

Most PNG‑to‑STL conversions only take a few minutes. After you upload your PNG or JPG and describe the image, we process it, generate the 3D mesh, and produce an STL file that you can download and open in your slicer.

You can upload and preview images without an account, but you’ll need to sign in to actually convert PNG to STL and download the resulting files. Having an account also lets you revisit and manage your previous conversions.

High‑contrast PNGs with simple silhouettes, bold logos, line art, and text usually convert to the cleanest STL geometry. Complex photos can be converted, but they often work best as artistic heightmaps or reliefs and may need more cleanup.

No. STL is a geometry‑only format, which means it does not store color or texture information. Some PNG‑to‑STL tools may use color or brightness to define different heights or regions during conversion, but the final STL file itself is colorless.

If your PNG‑to‑STL result looks flat or lacks detail, the original PNG is usually too low‑resolution or low‑contrast. Try exporting a higher‑resolution image, boosting contrast, simplifying the background, or using artwork with bolder lines and clearer shapes before converting.