Image Resizer
Resize by percentage or in pixels for free, without uploading your images.
Your images never leave your device.
Drop your images here
You can pick several at once. Accepted formats: JPG, PNG and WebP.
Smaller fileHigher quality
How to use it
- Drag your JPG, PNG or WebP images into the box, or use the Choose images button to pick them from your computer or phone.
- Set the new size by percentage or in pixels. The file list shows the dimensions each image will have.
- If you need to, adjust the quality for JPG and WebP images.
- Press the Resize button, then download each image on its own or all of them in one ZIP file.
How it works
Resizing an image means changing its width and height in pixels. Your browser opens each image, draws it on a canvas at the new size and saves it again in the same format: a JPG stays a JPG, a PNG stays a PNG and a WebP stays a WebP. Everything happens on your device: the tool never sends your images to a server.
By percentage, width and height change in the same proportion: 50 makes each side half as long, and 200 makes it twice as long. By pixels, if you enter only the width or only the height, the other side follows the aspect ratio; if you enter both, the image is resized to fit within that width and height without stretching. If you uncheck Keep aspect ratio, you get the exact size you typed, even if the image stretches.
Big reductions happen in steps, halving the size each time, so the result stays sharp. You can also enlarge an image, but it will look blurrier: the tool can't invent detail the image doesn't have.
The new file doesn't keep the original's metadata (EXIF), such as camera details or GPS location, because the image is drawn on a canvas and saved again. The quality setting applies to JPG and WebP; PNG doesn't use it. If an image is animated (WebP or PNG), the result keeps only its first frame.
Example
You have a 4000 × 3000 pixel photo and need it 1200 pixels wide. Choose By pixels, enter 1200 as the width and leave Keep aspect ratio checked: you get a 1200 × 900 image, because the height shrinks in the same proportion.
At 25 percent, the same photo comes out at 1000 × 750. If you enter 1080 for both width and height, it fits inside that square at 1080 × 810; with Keep aspect ratio unchecked, it comes out at exactly 1080 × 1080, but distorted.
Frequently asked questions
Are my images uploaded anywhere?
No. The resizing runs inside your browser and your files never leave your device, so it is safe to use with private photos.
How do I resize an image without losing quality?
Shrink it rather than enlarge it. Big reductions happen in steps, halving the size each time, so the result stays sharp; enlarging makes an image blurrier, because the tool can't invent detail. For JPG and WebP, a higher quality setting also keeps more detail.
How do I resize an image without stretching it?
Leave Keep aspect ratio checked; it's on by default. Enter only the width or only the height and the other side follows; enter both and the image is resized to fit within them without stretching. Resizing by percentage always keeps the proportions.
Can I make an image bigger?
Yes. Use a percentage above 100, up to 1000, or enter pixel dimensions larger than the original. The result will look blurrier, and a very large image can fail on a phone; if that happens, try it on a computer.
Does resizing an image reduce its file size?
It can, but not always. Shrinking an image leaves fewer pixels to store, but the final size also depends on the image's content and the quality setting. The file list shows each file's size before and after. If you need a smaller file at the same dimensions, compress it instead.
Can I resize multiple images at once?
Yes. Add several images, press the Resize button, then download them one at a time or all together in a ZIP file. The setting you choose applies to all of them, and each one keeps its format.
Does it work on iPhone and Android?
Yes, in current versions of Safari, Chrome, Firefox and Edge, on desktop and on phones. The exception is WebP images: Safari can't create WebP files, so to resize them, use Chrome, Edge or Firefox on a computer. JPG and PNG work in all of them.
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