How to resize an image
- Pick a quick size, or choose how to resize: by width, to an exact width and height, or by percentage.
- Drop your images on the box or tap “Choose images”. Each one is resized with the current settings.
- Check the new size in pixels and download, one at a time or as a ZIP.
Three ways to set the size
- Width (keep proportions): the height follows automatically, so nothing is squashed. Best for websites, email and documents.
- Exact width and height: for places that need a fixed frame, such as a 1080 × 1080 post or a 400 × 400 profile picture. “Crop to fill” trims the edges evenly; “Fit inside” keeps the whole picture and makes it smaller than the frame in one direction.
- Percentage: 50% halves the width and the height, which leaves a quarter of the pixels.
Common sizes
| Use | Size |
|---|---|
| Instagram square post | 1080 × 1080 px |
| Instagram portrait post (tallest) | 1080 × 1440 px (3:4) |
| Full HD screen or slide | 1920 × 1080 px |
| Images in an email | 600–800 px wide |
| Blog or website image | 1200–1600 px wide |
Platform sizes change, so check the current rules: our guides to Instagram image sizes and social media image sizes link to each platform’s own help pages.
Resizing versus compressing
Resizing reduces the number of pixels; compressing stores the same pixels in fewer bytes. A phone photo is often 4000 pixels wide, far more than a screen shows, so resizing it to 1600 px saves a lot of space with no visible loss. When a form asks for a file size rather than dimensions, use the image compressor or reduce image size in KB instead. More in resize vs compress.
Formats and quality
By default the resized image keeps its format: JPG stays JPG, PNG stays PNG and WebP stays WebP. GIFs are saved as PNG (first frame only), because browsers can’t write GIF files. iPhone HEIC photos need converting first with our HEIC to JPG converter. For JPG and WebP, 90% quality is a good default.
Private by design
Everything happens in your browser, so the tool works with personal photos and documents without sending them anywhere. The resized copy contains no location or camera data. If you want to share the result, upload it to get a link.
