Image Resizer: Resize JPG, PNG and WebP Images
Resize one or more JPG, PNG, WebP, GIF or BMP images by pixels or percentage in your browser, then save them as JPG, PNG or WebP.
Drop images here or choose them
JPG, PNG, WebP, GIF (first frame), BMP and, where your browser can open it, AVIF.
Images
JPG, PNG and WebP images keep their format. GIF, BMP, AVIF and other images are saved as PNG, because browsers cannot save in those formats.
JPG does not support transparency: transparent areas become white.
Choose images or drop them on the box above.
Notes
- Enlarging an image cannot add detail that is not in the original. Enlarged images look softer or blurrier.
- JPG and WebP are saved with lossy compression: a lower quality setting gives smaller files with more visible artefacts. PNG is lossless but usually larger for photos.
- The resized file can be larger than the original, for example when a photo is saved as PNG, when the quality setting is higher than the original's, or when the image is enlarged.
- EXIF, GPS, colour profile and other metadata are not copied to the output. The orientation recorded by a camera is applied to the pixels, so photos come out upright.
- For animated GIFs only the first frame is resized and saved.
- Very large images (above about 50 megapixels or 50 MB) need a lot of memory and may fail on phones or in older browsers. The largest output size is 16,384 pixels per side.
- Images are processed in your browser and are not uploaded to LeedyBox.
How to use
- Drop one or more images on the box above, or choose them with the file button. JPG, PNG, WebP, GIF, BMP and, where your browser can open it, AVIF are accepted.
- Choose "Pixels" and enter a width or a height, or choose "Percentage" to scale every image by the same amount (1 to 400 %).
- Leave "Keep aspect ratio" on so that no image is stretched. Turn it off only if every image must have exactly the width and height you enter.
- Choose the output format and, for JPG or WebP, the quality (90 by default), then press "Resize images".
- Check the new size shown for each image, then download the files one by one or, for two or more images, all together as a ZIP file.
Frequently asked questions
Are my images uploaded to a server?
No. The images are decoded, resized and saved by your browser and are not uploaded to LeedyBox. The page loads the JSZip library for the ZIP download from leedybox.com itself; your images are not sent anywhere.
How many images can I resize, and how large can they be?
The tool has no fixed number of files. Images are resized one at a time, so the practical limit is the memory of your device. Images above about 50 megapixels or 50 MB may fail on phones or in older browsers, and each side of a resized image can be at most 16,384 pixels.
Why does my resized image look soft or blurry?
Enlarging cannot add detail that is not in the original, so enlarged images look softer. By default, images that are smaller than the target are not enlarged. Large reductions are done in steps of one half with the browser's high-quality smoothing, which reduces jagged edges, but small text can still become hard to read in a strongly reduced image.
Do images with different shapes all get the same size?
Only if you turn off "Keep aspect ratio". With it on, every image gets the width you entered (or the height, if you changed that last) and keeps its own proportions, so the other side can differ from image to image. With it off, every image gets exactly the size you entered and may be stretched or squashed. This tool does not crop.
Is the EXIF data of my photos kept?
No. EXIF, GPS, colour profile and other metadata, including any DPI value, are not copied to the resized files. The orientation recorded by the camera is applied to the pixels first, so photos taken sideways come out upright.