What Can You Make with STL Files Generated by Embossify?

Updated

Embossify turns a JPEG into an STL mesh that you can 3D print or CNC route. The site names four concrete outputs: lithophanes, reliefs, and "other 3D design elements," plus general 3D printing and CNC routing use. What you actually get depends on two choices you make before rendering — target width and depth in millimeters — and on whether you accept the free low-resolution mesh or pay for the high-resolution one.

The four uses Embossify names

Use What it means in practice
3D printing The STL is a "perfectly enclosed tessellation," so it is a watertight solid rather than an open surface — the property slicers need to generate toolpaths.
CNC routing The same enclosed mesh can be cut as a relief rather than printed additively.
Lithophanes A thin panel where thickness varies with image brightness; held against light, the image appears. This is the classic output for this kind of conversion.
Reliefs and other 3D design elements Shallow raised or recessed surfaces derived from the image, for decorative or functional parts.

How the image becomes depth

The mechanism is stated plainly on the site: the lighter the pixel, the deeper the facet in the mesh. Dark areas end up shallow or at the base; light areas are pushed furthest out (or in, depending on orientation). There is an Invert depth option for the opposite mapping — useful when you want light areas recessed instead of raised, or when a lithophane would otherwise come out mirrored in tone.

Two sliders control the geometry:

  • Target width (millimeters) — sets the overall footprint of the model.
  • Depth (millimeters) — sets how far the brightest-to-darkest range extends. This is the single most important setting for printability: too much depth on a small width produces steep, fragile walls; too little produces a flat, low-contrast result.

Free vs. $5 high-resolution

The site offers free low-resolution renderings at roughly 108k facets and $5 per high-resolution rendering, purchased through PayPal. Both are instant downloads.

  • Low resolution (~108k facets) is fine for a quick proof of concept, a small print, or checking that your depth and invert settings look right before committing.
  • High resolution matters when the model is large, when fine image detail needs to survive into the mesh, or when you are routing a relief where visible faceting would show.

If you plan to make many, the site points to a bulk purchase option ("Have lots to Embossify? Save big, buy in bulk") and also exposes an API, a "Coiner" and "Lithograph" section, and a render-code feature for retrieving a previous render.

Choosing settings for your intended output

  1. Lithophane: keep depth modest relative to width (a thin panel), and check the result against a light before printing at final size. Invert depth if you want the image to read correctly from the lit side.
  2. Decorative relief for printing: moderate depth, wider target width, and high resolution if the image has fine linework.
  3. CNC relief: favor high resolution, since faceting is more visible on a cut surface than on a printed one, and confirm your depth range fits the bit and stock you have.
  4. Anything load-bearing or precise: this is an image-to-depth conversion, not a CAD model — treat the output as a decorative or display part, not an engineering one.

Practical notes

  • Input is JPEG only, selected via a file picker on the page.
  • The output is a single STL file, downloaded immediately after rendering.
  • The site has been running since at least 2013 (copyright range runs to 2026), and includes Terms of Service, Contact, About, and Examples pages — the Examples page is the fastest way to see what finished lithophanes and reliefs look like before you spend time on settings.