2D to 3D Converter: Photographs, Drawings and Flat Art
Turn a photograph, a logo or a flat drawing into geometry, and know in advance which of the three routes — reconstruction, extrusion or interpretation — your image actually needs.
Three routes, three kinds of 2D input
| Route | Best input | What comes out |
|---|---|---|
| Reconstruction | a photograph of a physical object | a mesh that matches the object's real proportions |
| Extrusion | SVG paths, logos, signatures, line art | closed contours given depth, with clean vertical walls |
| Interpretation | a concept sketch or a stylised illustration | a plausible three-dimensional form of the drawn subject |
Why a 2D to 3D converter is not a file converter
The 48 converters on this site rewrite an existing mesh into another mesh format — the geometry is already three-dimensional and the job is packaging. A 2D to 3D conversion invents the third dimension: depth, thickness and the unseen sides are decisions, not translations.
That distinction explains the failure modes. Nothing can reconstruct a side that no image shows, an extruded logo has no back detail beyond its own outline, and a sketch gives the engine freedom to interpret, which is either the point or a problem depending on what you wanted.
Flat art gets exact treatment
Logos, monograms, signatures and badges are vector art, so they should not go through a generative path at all. Extruding closed SVG contours gives mathematically exact profiles with no guessing, and the result is watertight by construction — which is why an extruded signature makes a good stamp or a good keyring.
The rule is simple: if the artwork already defines its outline precisely, extrude it. Reserve the generative routes for photographs and drawings where the third dimension genuinely has to be inferred.
Getting the depth right
Match depth to the object's own proportions
a 120 mm badge should be 3 to 5 mm thick, not 20 mm. Depth that ignores the outline's scale reads as a mistake even when the profile is perfect.
Close open paths first
an open contour cannot be extruded into a solid. Inkscape's path-union, or any vector editor's close-path command, fixes it in seconds.
Bevel what will be handled
a 0.4 mm bevel keeps a printed edge from feeling like a blade and helps the first layer release.
Check the scale before export
SVG has no unit that survives the trip into STL. Confirm the target width in millimetres while the model is still editable.
Frequently Asked Questions
What is the difference between this and the file converters?
The converters translate an existing mesh between formats. This page creates the third dimension for flat input: reconstruction from a photo, extrusion of a vector outline, or interpretation of a sketch.
Can I convert a JPG logo into a printable part?
Yes, but trace it to a vector first. A raster logo goes through edge detection, which rounds off corners that the original defined exactly; a traced SVG extrudes with straight walls and a predictable size.
How thick should an extruded design be?
Roughly 3 to 5 percent of its longest dimension for decorative parts — 3 to 5 mm on a 120 mm badge — and 2 to 3 mm for a flat wall plaque. Anything structural needs a thickness chosen for the load, not for looks.
What happens to the back of a photo reconstruction?
It is inferred from the visible surfaces. Symmetrical objects come out well; objects with a distinctive back need a second or third photo through multiview.
Does a sketch produce what I drew?
It produces a plausible three-dimensional interpretation of what you drew. Two people sketching the same character will get two different meshes, so treat the first result as a starting point rather than a specification.
Which formats can I export from a 2D conversion?
STL and 3MF for printing, GLB for web and engines, OBJ for DCC tools, and PLY when the next step expects scan-style data. All are available on every plan.