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How to Turn a Photo Into a Brick Mosaic Online

Published 2026/10/06Updated 2026/10/06

Start with a clear photo

A single subject and strong contrast give the first plan a readable outline. Crop busy backgrounds before uploading.

Choose the grid size

A small grid is easier to build. Increase detail only when the subject still reads at thumbnail size.

Clean the palette

Merge near-identical shades when they do not separate important shapes. Fewer colors also make sorting easier.

Choose the image. Use a sharp photo with one main subject and little empty border.
Upload and preview. Treat the first preview as a direction, then check the outline and main light-dark split.
Review the plan. Step back from the screen and remove background detail if the subject disappears.
Build in large shapes. Lay out the background, silhouette, and small accents in that order.
Save the result. Photograph a successful build before taking it apart so the arrangement is reusable.

Do I need design software?
No. A browser tool handles the conversion; a simple crop tool is optional.

Should I keep every color?
No. Keep a shade only when it changes an important boundary or expression.

What is a good first grid size?
Use the smallest grid that keeps the main subject recognizable.

FAQ

Do I need design software?

No. A browser tool handles the conversion; a simple crop tool is optional.

Should I keep every color?

No. Keep a shade only when it changes an important boundary or expression.

What is a good first grid size?

Use the smallest grid that keeps the main subject recognizable.