Make a uniform photo grid without an editor
2–12 photos, same-size cells, even gaps — the layout math and center-crop are done for you, out comes one PNG.
Tools used in this guide
The job
A grid collage for a blog post or event recap: every image the same square cell, consistent gutter, one exported PNG. Doing it in an editor means hand-measuring each crop — the tool takes count, columns, cell size, and gap, and handles the rest.
Count, columns, cell, gap
Choose 2–12 images, set columns (0 = auto balanced grid), cell px, and gap px. Each photo is center-cropped to fill its cell — the trade-off for a tidy grid is that edges get cut.
Worked example
Nine photos, 3 columns, 512 px cells, 8 px gaps → a 1,552×1,552 px PNG. Four photos on auto give a 2×2 grid; with 1 column forced they stack as a vertical strip.
Where it stops
Square cover-cropped cells only — no per-photo focal point, no irregular masonry layouts. Budgets: ≤ 25 MiB per file, ≤ 100 MP of combined input, canvas ≤ 40 MP. Decoding a dozen photos at once briefly uses memory far beyond their file sizes.