A tile with different left/right edge colors
Input and settings
Synthetic 16×16, red left/blue right / 2×2 copies / 200% / Boundaries on
Expected result
Four copies, displayed at 32×32 px each. Inspect the blue→red transition between copies.
Seamless Tile Checker
Repeat a texture in a grid and zoom in to inspect its seams.
How to use
- Choose an image to repeat.
- Choose the grid, zoom, boundary guides and background, then run.
- Inspect horizontal and vertical seams and use 100% view for original detail.
Files and settings
You can also drop or paste images. Pasted images may not retain the original file metadata.
File contents and names are not stored or uploaded.
Up to about 134.2 MB and 70 MP per image, 268.4 MB of input in total, and 100.7 MB of output. Devices with limited memory may require smaller images.
Result
Share this tool
Share only the tool name and public URL. Your input and results are not included.
Purpose and use
Check whether the edges of a wall, fabric, or other texture join cleanly when repeated. Inspect horizontal and vertical seams using 2×2, 3×3, or 5×5 repetition and zoom.
Example
A 256×256 px texture in a 3×3 grid repeats nine times across a 768×768 px area.
Interpreting the result
Hide the boundary guides to inspect seams, then use 100% to inspect original detail.
Limits and caveats
This does not repair seams or preview a texture on 3D geometry. Colors follow the browser’s image decoding.
Related workflow
Use Image Compare to check a texture before and after editing.
Try a use case and check the result
Repeat the same image to inspect left/right and top/bottom boundaries visually.
Example buttons replace the inputs and settings above and calculate. Restore previous input steps back one example at a time. After trying multiple examples, repeat restore to return to your original input. This history is lost when the page closes.
Repeat matching border colors in a 3×3 grid
Input and settings
Synthetic 16×16, blue border/red center / 3×3 copies / 400% / Boundaries off
Expected result
Nine copies, displayed at 64×64 px each. Borders meet in blue; judge the visual pattern yourself.
How to read the result
Look for abrupt color/pattern changes at joins. Repeat count, zoom and boundary lines are display controls. The tool does not automatically pass/fail or repair seams.
Scope and limits
Repeat 2×2, 3×3 or 5×5; zoom 10–400%. One image, up to 128 MiB, 70 megapixels and 16,384 px per edge. Large repeated previews use memory. Restore returns the file and display settings; rerun to rebuild the preview.
Independently verify 2²=4 and 3²=9 copies, and 16×2=32 / 16×4=64 px. Check borders, colors and restored file/settings.
Continue with the next task
Frequently asked questions
Will this change the original file?
No. Downloads are separate files. Closing the page discards the loaded content and results.
Can this repair seams automatically?
No. This repeats an image for visual inspection. Make corrections in an image editor.
What are 100% zoom and boundary guides for?
Use 100% as a reference for inspecting detail and guides to locate tile edges. Hide the guides to judge whether adjacent images join naturally.
Can I preview the texture on a 3D model?
No. The preview is a flat repeating grid. PNG, JPEG, and WebP images are decoded and displayed by the browser.
Related tools
Inputs and storage
Keep any content you need before clearing. This tool does not autosave inputs or results. Reloading or closing the page, clearing inputs or resetting may discard your work.
Favorites and language preferences are stored separately and may be lost when site data is cleared. Tool resets and site-data deletion do not delete files already downloaded to your device.