How many images can I run at once?

There is no cap in the tool. Files are decoded and redrawn one at a time behind a running count, so the ceiling is how much memory the tab has for the decoded bitmaps rather than a number set here. The decode and the redraw both happen in this tab, so a folder of client photos is never uploaded, and anything past a single image comes back as resized-images.zip.

Image Resizer

No upload · runs in your browser

Drop images hereJPG, PNG or WebP, as many as you like. Files stay on your deviceSelect images No upload · processed locally · auto-deleted

Runs entirely in your browser, nothing is uploaded.

How it works

Image Resizer: Resize by Pixels or by Percentage

Resize JPG, PNG or WebP by exact pixels or by 1% to 1000%. Downscales in halving steps, and leaves images that are already smaller alone.

What this does

Target a width, a height, both as a bounding box, or a percentage from 1% to 1000%
Six presets: 1920 × 1080, 1280 × 720, 1080 × 1080, 800 × 600, 512 × 512 and 150 × 150
Repeated halving before the final draw, which keeps edges from going gritty on a big reduction
Before-and-after dimensions and file size per image, with thumbnails for the first eight

FAQ

With the aspect lock on they are read as a bounding box: the image is scaled by whichever of the two ratios is smaller, so it fits inside them and one side usually lands short of the number you typed. Nothing is distorted. Turn the lock off and the image is stretched to exactly that width and height, whatever it does to the proportions. Fill one field and leave the other empty and the missing side follows the original.

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