Image Resizer

What this tool does

Resizes any image to an exact pixel width/height, a percentage of the original, or a ready-made social media preset (Instagram post/story, Facebook cover, X post, YouTube thumbnail, LinkedIn banner) — with an optional format change (JPEG/PNG/WebP) and quality control to shrink file size.

Who it's for

• Anyone who needs to fit a photo to a specific platform's exact dimensions before posting
• Shrinking a large photo's file size before emailing it or uploading it to a site with a size limit
• Converting between JPG, PNG and WebP

How to use it

1. Upload your image.
2. Pick a quick percentage, a social-media preset, or type exact width/height (the lock icon keeps the aspect ratio locked so your image doesn't stretch).
3. Optionally change the output format and quality — the estimated file size updates live.
4. Download the resized image.

Tip: lowering the quality slider a little (e.g. to 80%) on a JPEG or WebP export often shrinks the file size significantly with almost no visible difference — useful when a site has a strict upload size limit.

Privacy: the resize happens entirely in your browser using the canvas — your image is never uploaded anywhere.