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What is Embossify?
Embossify is a browser-based converter that turns 2D JPEG images into 3D STL meshes. You upload a JPEG, adjust a few depth and size settings, and the site generates a tessellated mesh you can download for 3D printing or CNC routing. It is aimed at hobbyists and makers who want to turn photos or drawings into physical objects without learning 3D modeling software.
Embossify
What it actually makes
The site describes three main outputs: lithophanes, reliefs, and other 3D design elements. A lithophane is a thin panel that reveals a photo when backlit — the darker a pixel, the thicker or deeper the corresponding facet. A relief is a raised surface carving of the image. Both are classic entry-level 3D printing projects because they need no supports and print flat.
The controls that matter
The page exposes target width in millimeters, depth in millimeters, and a lighter/darker adjustment, plus an invert-depth option for flipping which tones end up raised. Practical starting points: a lithophane usually works well around 100 mm wide and 2–3 mm thick, while a decorative relief can go deeper. The lighter/darker slider is the one to experiment with first, since it controls how much contrast survives the conversion.
Free versus paid
| Free rendering | Paid rendering | |
|---|---|---|
| Resolution | Low (~108k facets) | Higher facet count |
| Cost signal | Free | $5 per render, with bulk discounts |
| Best for | Testing settings, small prints | Detailed photos, larger prints |
Low-resolution output is fine for checking composition and orientation before committing. For a sharp lithophane at 100 mm or more, the finer mesh is usually worth the cost, since visible faceting is the main quality complaint with coarse STL conversions.
A sensible first project
Pick a high-contrast portrait, render it free at your intended width, and slice it in your printer's software to check thickness and print time. If the preview looks blocky or the depth range feels wrong, adjust depth and the lighter/darker setting and re-render before paying for the high-resolution version.
How do I convert a JPEG image into an STL file for 3D printing?
You convert a JPEG into an STL by turning the image's brightness into height: light pixels become one depth, dark pixels the opposite, producing a relief or lithophane mesh that a 3D printer can slice. Embossify is a browser-based tool built for exactly this: it accepts a JPEG, lets you set a target width and depth in millimeters, and outputs a stereolithography (STL) file as a downloadable mesh.
Convert JPEG Images into STL 3D Mesh
The basic workflow
- Prepare a JPEG with clear tonal contrast. Faces, logos and line art with distinct light and dark areas emboss more legibly than busy photos.
- Upload it to the converter and set the target width and depth in millimeters. Width governs how large the printed piece is; depth governs how pronounced the relief is.
- Choose whether lighter pixels sit deeper or shallower. The site notes lighter pixels become deeper facets by default, and that you can invert the depth for the opposite effect.
- Render. The free tier produces a low-resolution mesh of roughly 108,000 facets; a paid high-resolution render is offered at $5 per rendering, with bulk purchasing mentioned for larger batches.
- Download the STL and open it in your slicer to check orientation, scale and whether the mesh needs support.
Choosing a resolution
| Situation | Practical choice |
|---|---|
| Quick test of framing, depth and orientation | Free low-resolution render |
| Fine detail, text, faces, gift-quality lithophane | High-resolution render |
| Many images, repeated iterations | Bulk option, since per-render cost adds up |
The trade-off is straightforward: low resolution is free and fast for proofing, but coarse facets can blur fine detail in the final print. High resolution costs per render, so iterate at low resolution first and only pay once the composition is right.
Practical tips
- Print lithophanes vertically or at a steep angle so the thickness variation shows when backlit; printing flat can smear the tonal range.
- Keep depth modest on small pieces. Excessive depth on a narrow print makes thin areas fragile.
- Match target width to your printer's bed and to the viewing distance — a small relief viewed from far away loses its effect.
- Check the STL in your slicer before printing; a "perfectly enclosed tessellation" is the goal, but scale and orientation are still yours to set.
For a first attempt, pick a high-contrast portrait, render at low resolution, and print a small test piece to judge depth before committing to a high-resolution render.
What is the difference between the free low-resolution and the $5 high-resolution STL renderings?
The difference is mesh density: the free version produces roughly 108,000 facets, while the paid version produces a denser mesh with more facets. Everything else about the conversion process stays the same — you still upload a JPEG, adjust settings like target width and depth in millimeters, and download an STL mesh enclosed as a tessellation.
What the extra facets buy you
- Smoother surfaces. A lithophane or relief is essentially a height map: lighter pixels become deeper facets (or shallower, if you invert depth). With ~108k facets, steep transitions between light and dark areas are approximated by relatively few triangles, so curves and fine gradients can look stepped or faceted, especially when light shines through a lithophane.
- Finer detail retention. Small features — thin lines in a drawing, facial detail in a photo, text in a logo — survive better when more triangles are available to describe them. At low resolution, narrow features may merge or blur.
- Larger prints benefit most. If your target width is small (say, a keychain-sized lithophane), the free mesh may already look fine because the printer's own resolution limits the visible detail. Scale up to a large panel or a CNC-routed relief, and the facet count is spread over more surface area, making the difference obvious.
A practical way to decide
Start with the free low-resolution render. Slice it and preview the toolpath, or print a small test piece. If you see visible faceting, lost detail, or banding in the areas that matter to you, pay for the high-resolution version of that same image. This costs you only a test print rather than committing the $5 upfront, and it tells you whether your specific image, size, and output method actually need the denser mesh.
For a concrete case: someone making a 100 mm × 100 mm backlit lithophane of a family photo will usually notice the free mesh's limits in skin tones and hair. Someone making a 40 mm commemorative coin or a simple high-contrast logo relief often will not.
If you plan to render many images, the site notes bulk purchasing as an option, which is worth checking before paying per render. The same tool is also reachable through Embossify if you want to compare settings or try the free tier first.
How can I create a lithophane from a photo using Embossify?
Embossify converts a JPEG photo into an STL mesh by mapping pixel brightness to depth: lighter pixels become deeper facets, and the depth can be inverted if you want the opposite effect. That makes it a lithophane generator rather than a modeling tool — you upload an image, set a target width and depth in millimeters, and download a printable mesh.
Basic steps
- Open Embossify and select your JPEG.
- Enter the target width and depth in millimeters. Width sets the printed size; depth controls how pronounced the relief is.
- Choose whether to invert depth. For a standard lithophane viewed against light, the usual convention is that darker image areas print thicker, so check the preview and invert if your result looks like a negative.
- Render and download the STL.
Free vs. paid render The free option gives a low-resolution mesh (roughly 108k facets). A high-resolution render is offered as a $5 PayPal purchase. For a small test print or a quick proof of concept, the free version is enough to check framing and depth. For a gift-sized lithophane where fine facial detail matters, the higher facet count is the difference between smooth gradients and visible faceting.
Practical considerations
- Thin lithophanes print best standing vertically or at a steep angle, with layer lines running across the image rather than along it.
- Depth and width interact: a wide, shallow print looks washed out, while a narrow, deep one can become brittle.
- A lithophane is a single-color print meant to be backlit. If you want a display piece rather than a light-dependent one, a relief print in a solid filament is the better target.
- The site also mentions bulk purchasing, which suits anyone producing several lithophanes rather than one.
If you only need to test whether your photo works, start with the free render at your intended width, print a small section, and only then pay for the high-resolution version.
What do the depth and target width settings change in the generated 3D mesh?
The target width sets the physical size of the finished mesh along its X axis, in millimetres. The depth sets how far the relief rises or sinks along Z, from the shallowest to the deepest facet. Both are output controls: they change the exported STL, not the JPEG itself.
In Embossify's converter, depth is also tied to brightness. The page states that lighter pixels become deeper facets, and that you can invert depth to get the opposite effect. So the depth value is effectively the contrast range of the relief, while pixel brightness decides where each point sits within that range.
How the two settings differ in practice
| Setting | Unit | What it controls | Typical consequence |
|---|---|---|---|
| Target width | mm | Overall X-axis size of the mesh | Too large for your printer bed means scaling later in a slicer; too small can lose fine detail |
| Depth | mm | Total relief height, light to dark | Too shallow looks flat; too deep can produce steep walls, undercuts or fragile thin areas |
A concrete scenario
Say you are making a lithophane of a portrait to print on an FDM printer. You want the finished piece about 100 mm wide to fit a standard picture frame, so you set target width to 100. Then you choose depth based on how much light you want to pass through: a few millimetres gives a visible but safe relief, while a much larger depth creates dramatic contrast but risks very thin or very thick sections that print poorly.
For a CNC-routed relief sign, the logic is similar but the constraint changes: depth must stay within what your longest bit can reach without collisions, and target width must fit your machine's work area.
Decision criteria
- Set target width first from your printer bed, frame or mounting hardware, since it is a hard physical constraint.
- Set depth second from the material and process: thin lithophanes need modest depth, decorative plaques can take more.
- Check both against your slicer or CAM software before committing, because scaling the STL afterwards changes depth and width together, which can undo your intended relief.
A practical next step is to render the free low-resolution version at your intended width and depth, inspect the mesh in a viewer, and only then decide whether a higher-resolution render is worth paying for. If you want to compare output formats or workflows, Embossify is the tool being described here.
Can I save money on multiple high-resolution renders with bulk pricing?
Yes. The page itself advertises a bulk option: "Have lots to Embossify? Save big, buy in bulk." So if your question is whether multiple high-resolution renders are cheaper together than one at a time, the site's own wording says yes. The page lists a single high-resolution render at $5 and does not publish the bulk tiers, so the exact per-render discount is not stated there.
What is published:
- Free low-resolution renderings, around 108k facets
- High-resolution rendering at $5 each via PayPal
- A separate bulk purchase path for multiple high-resolution jobs
Because the pricing table is not on the page, treat the bulk rate as a quote you request rather than a number you can calculate from the site. The practical move is to decide how many high-resolution renders you actually need, then ask through the site's contact or bulk route before paying for them one by one.
A useful decision rule: if you are rendering a small batch of one or two images, the single $5 option is simpler. If you are producing a set — say a series of lithophanes for gifts, a run of relief tiles, or a group of CNC-routed panels — the bulk path is the one designed for that volume, and the saving should be measured against the $5-per-render baseline.
For context on the format and workflow, the tool converts JPEG data into STL meshes, with lighter pixels producing deeper facets and an invert-depth option. Related lithophane and relief tools exist elsewhere, such as It's Litho for lithophane generation and 3DP Rocks for image-to-lithophane conversion, but pricing and bulk terms differ by site, so compare only after you know your batch size.
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