Resize images

No. The tool runs entirely in your web browser. Your images are read from your device, processed in memory and saved straight back to it. They are never uploaded, stored or seen by anyone.

Choose “Pixels”, type the width, such as 1080, and leave the height empty with “Keep aspect ratio” on. Each image gets that width, and its height follows its own shape. Enter a height as well to fit every image inside that box, or turn the lock off to get exactly that width and height.

Making an image smaller keeps it sharp: it’s scaled down in several smooth steps, so edges don’t turn jagged. JPG and WebP files are saved again at quality 90 by default, which looks the same as the original, and PNG files stay lossless. Lossless WebP images are saved as ordinary (lossy) WebP, so resize screenshots as PNG if every pixel matters. Making an image bigger can’t add detail that isn’t there, so it looks softer the more you enlarge it.

Yes. Enter a larger width or height, or a percentage up to 400%. The result can be up to 50 megapixels and 32,767 pixels wide or tall (the most browsers can draw), and WebP images up to 16,383 pixels. Enlarging works best for small steps, such as meeting a minimum size for an upload, because no new detail is created.

The same as the originals: JPG stays JPG, PNG stays PNG and WebP stays WebP, so transparency is kept. HEIC photos are saved as JPG, because few apps and websites can open HEIC. To change the format as well, use the image converter.

libheif and libde265, open-source libraries licensed under the LGPL-3.0, compiled to WebAssembly so they run in your browser. Their licences and links to their source code are in /vendor/libheif/NOTICE.txt on this site.

Yes, by default. Photos often carry hidden EXIF data such as the GPS location where they were taken, the date and the camera or phone model. “Remove metadata” is on unless you turn it off, so the images you share don’t reveal where you were. Turn it off to keep that data in the saved files, such as the date taken for your photo library. Colours are kept looking the same: re-encoded images, including iPhone photos in Display P3, are converted to standard sRGB, and files kept in their original form keep their colour profile.

Yes. Add as many images as you like, up to 50 MB each and 500 MB in total. A file over the limit is skipped and the others are still added. Each one gets its own result and download link, and “Download all” saves them together as a ZIP file.

Yes. There is no sign-up, no watermark and no daily limit. Because all the work happens on your own device, there are no servers to pay for.