Image Resizer

How to resize an image

1. Drop your images into the box above, or click it to pick files. You can also paste with Ctrl+V.
2. Choose how the size is applied. Longest side keeps the aspect ratio and is what you want most of the time.
3. Pick a format if you want a different one, then download single images or all at once. Keep format leaves JPEG as JPEG and PNG as PNG.

Which size do I need?

Website icons are the exception to this table: their sizes are fixed by the platform, not by you: 16 px for a browser tab, 32 px for bookmarks, 180 px for an iPhone home screen. The favicon generator cuts one square image to all six sizes a site needs, plus the manifest and the HTML.

At Thanksgiving, photos resized to a frame’s measurements or to a full sheet become the prints for the hallway or the memory table, one job on the Thanksgiving hub’s make-list. On New Year’s Eve, the year’s photos print as A4 wall pieces for the photo countdown to midnight, one revealed every hour.

Quality and file size

JPEG quality is a trade-off, not a switch. Below 70 the compression starts to show around edges and text. Between 80 and 90 almost nobody sees a difference, and the file is far smaller than at 100. The default here is 88.

Longest side never enlarges an image. Scaling a 800 px photo up to 1600 px adds pixels but no detail, so the tool leaves it alone. Use width, height or exact if you really need a larger canvas.

PNG ignores the quality slider: it is lossless. If a PNG photo feels too heavy, convert it to JPEG or WebP instead.

Why nothing is uploaded

The resizing runs in your browser with the standard canvas API. Your files never travel across the network, which is why there is no size limit, no queue and no account.