How to resize an image
- Click the yellow area and pick your images, or drag the files onto the page. You can pick several at once.
- Type the new width and/or height in pixels, or choose Percentage to scale up or down proportionally.
- Choose the format and click Download. With several images, use Download all to get a ZIP.
Images are redone automatically whenever you change an option.
Pixels or percentage
- Pixels: use it when a website asks for an exact size, like 1080 pixels wide for Instagram or 1920 × 1080 for a banner. With Keep proportions ticked, the image fits inside the size you type without stretching. Leave the height empty to calculate it from the width (and the other way around).
- Percentage: use it to shrink or enlarge while keeping the shape. 50% gives half the width and half the height (a quarter of the pixels).
If you untick Keep proportions and fill in both width and height, the image gets exactly that size, even if it has to stretch.
Common sizes
- Instagram: 1080 px wide (square 1080 × 1080, portrait 1080 × 1350).
- Full HD: 1920 × 1080, for screens, slides and video thumbnails.
- 4K: 3840 × 2160, for large prints and high-resolution screens.
- Websites and email: 800 to 1280 px wide is usually enough and keeps pages light.
Format and quality
Same keeps the original format. JPG is the lightest for photos. PNG keeps transparency and crisp text. WEBP is even smaller than JPG, but not every site accepts it. Quality applies to JPG and WEBP: 85 to 90% looks practically identical and is much lighter.
If your goal is a file size (say, 100 KB), use compress image to KB.
Frequently asked questions
Does shrinking reduce quality?
Shrinking always removes detail, since there are fewer pixels, but it’s done in steps to avoid jagged edges. The result is sharp at the new size.
What about enlarging?
You can enlarge up to 400%, but the image doesn’t gain new detail: it just gets bigger and softer. For large prints, always start from the original photo.
Are my photos uploaded anywhere?
No. Everything happens in your browser and your photos never leave your device.
Does it work with iPhone photos?
Yes, with JPG and PNG. HEIC photos open in Safari; in other browsers, convert them to JPG first.
Is there an image limit?
There’s no limit on how many. Each result can be up to 16 megapixels (for example 4000 × 4000), so it also works well on phones.