Upload the source
Choose a JPG, PNG or WebP. This checker begins with seam blending off so the preview shows the uncorrected texture.
Seamless Texture Checker
Check whether your texture tiles cleanly. Upload an image, inspect a repeating grid and edge differences, and spot seams before using it in a material.
One surface. Five texture maps.See how your texture repeats
Upload a texture to inspect its repeating edges while keeping the original proportions.
Existing AI-generated example · Maps processed on your device
THE WORKFLOW
From source to a useful result.
Look across the boundaries
Inspect horizontal and vertical joins, then the intersections where four tiles meet. Check large light-to-dark gradients as well as abrupt pixel changes.
Choose the next step
If the edges break, open the seamless generator and blend them. If the edges join but a feature repeats too obviously, edit or replace the source rather than simply increasing the blend.
A good edge score is only one check.
Opposing boundary pixels can be identical while a brick course jumps, a shadow creates a grid, or a distinctive object repeats across the surface. A numerical edge difference measures only the sampled boundary, not whether the whole material is convincing.
Review the texture at the scale it will be used. A fine seam may disappear at distance while a broad brightness gradient becomes more obvious across a large floor.
Keep the source unchanged while diagnosing.
The checker is a viewing workflow. It starts with seam processing disabled, so you can judge an unblended working copy. The checker preserves the full aspect ratio, downsizes images above 1024 pixels on their longest side, and composites transparency over gray. Derived preview maps should not be mistaken for a repaired source.
For a final production decision, also test the downloaded map on the actual mesh, with its real UV scale and scene lighting. Browser preview is a quick diagnostic, not a substitute for that final check.
Frequently asked questions
How do I know if a texture is seamless?
Repeat it in both directions and inspect the joins at more than one scale. Check edges, four-tile intersections, brightness gradients and repeated distinctive features. Use edge difference as a diagnostic, not as proof of visual quality.
Does checking a texture change my image?
Your original file is unchanged. The preview uses an unblended working copy, preserves aspect ratio, scales large images down to a 1024-pixel longest edge, and composites transparency over gray. Use the separate seamless generator to blend borders.
Can I check AI-generated images?
Yes. Save the AI output as an image, then inspect it here. A prompt that asks for seamless output is not evidence that the resulting image actually tiles well.
Start with a new surface.
Describe a material, then make it your own.