Turn a pile of photos into one tidy grid
You shot 40 pictures at the weekend and want to post a handful as a single image. Or you’re building a moodboard, a before-and-after, a product lineup. Cropping each one by hand and lining them up in a design app takes ages.
Drop your photos here, pick a grid, and the collage builds itself. Each cell crops its image to fill the space (no awkward stretching), and you get a live preview that updates the second you change anything. Everything stays on your machine. Nothing gets uploaded.
Picking a layout
The grid presets cover the shapes people actually use:
- 2 x 2 for a clean four-photo square
- 3 x 3 for an Instagram-style nine-grid
- 2 x 3 and 3 x 2 when you’ve got six shots
- 1 x 2, 2 x 1, 1 x 3 for strips and diptychs
- 4 x 4 when you really want to cram sixteen in
Got fewer photos than cells? They repeat in order to fill the grid, so a single image tiles neatly across the whole thing. Add more and they slot into the next open spots.
Gap, background, size
Three knobs do most of the styling work.
The gap slider sets the spacing between cells, from a tight zero up to a chunky 80 pixels. Wider gaps read as a Polaroid-ish framed look. Zero gap gives you a seamless mosaic with no lines at all.
That gap shows the background color, so the two play together. White is the default and works for almost everything. Black makes photos pop. There’s a small swatch row plus a full color picker and a hex box if you’re matching a brand palette.
Output size controls the final pixel dimensions. Square 1080 is the Instagram safe bet. Portrait 1080 x 1350 takes up more feed real estate. Story 1080 x 1920 fills a vertical screen. There are landscape and wide options too for thumbnails and banners.
How the export works
The preview you see is a scaled-down copy of the real thing. When you hit download, the tool re-renders the collage at the full output resolution onto a hidden canvas, then saves it as a PNG. The gap scales proportionally, so what you preview is what you get, just sharper.
Center-crop fills every cell. That means each photo gets sized to cover its slot completely, trimming whatever hangs over the edges from the center out. Faces and central subjects survive this well. If a key detail sits right at a corner of one photo, crop that shot first with a separate tool, then bring it in.
A few things worth knowing
Image order follows the order you added them. Remove one with the little x on its thumbnail and the rest shift up to fill the gap. Want a different arrangement? Clear all and re-add in the order you want.
Big source files stay sharp. The collage renders at full output resolution, so a 4000-pixel photo dropped into a 3x3 grid still looks crisp at 1080. Tiny images scaled up to fill a large cell will look soft, same as any resize.
PNG keeps everything lossless. No compression artifacts, no quality slider to second-guess. If the file ends up large and you need it smaller, run the result through an image compressor afterward.
FAQ
How many photos can I add?
As many as you like. The grid only shows as many as the layout has cells, but you can swap and remove freely until the arrangement looks right.
Do my photos get uploaded anywhere?
Nope. The whole thing runs on a canvas in your browser. Your images never leave the device, which also means it works offline once the page has loaded.
Why does one photo repeat across the grid?
Because you have fewer photos than the layout has slots. Add more and the duplicates get replaced by the new images in order.
Can I make the cells different sizes?
Not in this version. Every cell is equal, which keeps grids clean and predictable. Mosaic and freeform layouts with mixed cell sizes are a different beast.
What format is the download?
A standard PNG at whatever output size you picked. It opens anywhere and posts straight to any social platform without conversion.
Can I add rounded corners or borders to each photo?
Cells are square-edged for now. You get a uniform gap and a background color, which together act like a frame around every photo.