Set a width, a height or a percentage, keep the proportions locked and download every resized image, one by one or as a ZIP.
Your file never leaves your device. Processed locally in your browser. Nothing is uploaded. Location and camera metadata (EXIF) are removed from the result.
With “Keep aspect ratio” on, fill only the width (or only the height) and the other side follows. Fill both and the image fits inside that box. Percentage mode scales everything by the same amount: 50% halves both sides.
Each image keeps its format by default (JPG stays JPG, PNG stays PNG). You can also convert while resizing, for example to WebP for websites.
Yes, untick “Never enlarge smaller images” or use 150%/200%. Enlarging can't add detail, so the result will look softer.
Up to 100 megapixels per image in the browser.