Create an Image Mosaic
Tile many uploaded images into one grid wall (a contact sheet). Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Create an Image Mosaic
- 1. Add your images. Upload the full set of photos you want combined into one grid, such as six photos for a contact sheet or portfolio wall.
- 2. Set the Columns. Enter how many images should sit in each row. The tool arranges every uploaded image into that many columns, wrapping to additional rows as needed to fit them all.
- 3. Download the mosaic image. Save mosaic.png once the grid layout looks right, with every uploaded photo tiled into a single combined image rather than several separate files.
When to use Create an Image Mosaic
Create an Image Mosaic tiles many uploaded images into one grid wall, effectively a contact sheet, arranged by a column count you choose. Use it whenever a set of separate photos needs to become one combined image rather than staying as individual files.
- Building a photography contact sheet. A photographer wants to review an entire shoot's photos at a glance, and tiling them into a grid with a set number of columns recreates the classic contact sheet layout.
- Creating a social media collage. A set of vacation or event photos needs to become one shareable image for a single social media post instead of posting each photo separately.
- Assembling a product variant grid. An online store has separate photos for each color variant of a product, and tiling them into one grid gives a quick side-by-side comparison image for a listing.
Examples
6 photos, 3 across
Input
6 images + columns 3
Output
mosaic.png (3×2 grid)
About the Create an Image Mosaic tool
Create an Image Mosaic runs as plain JavaScript in your browser tab, with no server behind it. Tile many uploaded images into one grid wall (a contact sheet). Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Image Tools section, 200 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with the Columns setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Create an Image Mosaic cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
Which files does Create an Image Mosaic accept?
It accepts images in any common format (PNG, JPG, WebP, GIF and more). There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.