Image Resizer
Set exact pixel sizes or a percentage, with a lock for aspect ratio.
Drop your image here
or choose a file — JPG, PNG or WEBP, up to 40 MB
This tool runs in your browser. Your image is not uploaded to our servers.
How it works
Upload an image, then set a target size — type exact pixels, drag a percentage slider, or tap a preset for a common size like 1080×1080. The preview updates as you adjust, so you can see the result before downloading.
Common use cases
- Fitting a photo to a specific social media size before posting
- Shrinking a large camera photo down to web-friendly dimensions
- Preparing a thumbnail or banner image at an exact pixel size
Features
- Exact pixel width and height, with aspect ratio lock
- Resize by percentage
- Six common presets for social and video formats
- Live preview and choice of output format
Supported formats
Upload: JPG, PNG, WEBP. Output: JPG, PNG, WEBP.
Frequently asked questions
Will resizing distort my image?
Not if aspect ratio is locked — width and height change together so proportions stay correct. Unlock it, or pick a preset with a different ratio, and the image will stretch to fit.
What's the difference between pixels and percent?
Pixels sets an exact width and height. Percent scales the whole image up or down from its original size — 50% makes it half as wide and half as tall.
Which preset should I use?
1920×1080 and 1280×720 suit video thumbnails and desktop wallpapers, 1080×1080 fits Instagram posts, 1080×1350 and 1080×1920 fit portrait and story formats, and 1200×630 is the standard size for link previews on social media.
Does resizing reduce file size?
Usually, yes — fewer pixels means a smaller file. For finer control over file size at a given resolution, pair this with the Image Compressor's quality slider.