Resize image
Change a photo to the exact width and height you need, or scale it by a percentage. Proportions stay right unless you choose otherwise.
To resize an image, choose it above, type the width or height in pixels (or switch to percentage), and tap Download. Leave Keep proportions on so the photo isn't stretched. Everything happens on your device.
How to resize a photo
- Pick Width and height to set pixels, or Percentage to scale (50% halves both sides).
- Type a width, a height, or both. With Keep proportions on, the photo fits inside the size you typed without stretching.
- Choose the photos. Each one is resized and gets its own download button.
Common sizes
| Use | Size in pixels |
|---|---|
| Instagram square post | 1080 × 1080 |
| Instagram portrait post | 1080 × 1350 |
| Stories, Reels, WhatsApp status | 1080 × 1920 |
| YouTube thumbnail | 1280 × 720 |
| Profile picture (most sites) | 400 × 400 or larger |
| Full HD wallpaper | 1920 × 1080 |
To fill an exact shape such as 1080 × 1350 without stretching, crop to 4:5 first, then resize.
Keep them locked, offline
Sealcloak encrypts your photos, videos and files on your phone. No account, no cloud, no internet permission.
Private by design
The tool runs entirely inside this browser tab. Your photo is opened, edited and saved on your own device, and it is never sent to a server, so there is nothing for anyone to keep, scan or leak. No account, no watermark and no limit on how many photos you do. It even keeps working if you switch off your internet after the page has loaded.
Resizing vs compressing
Resizing changes the number of pixels. Compressing changes how much space those pixels take in KB. If a form gives a limit in KB, use compress image. If it gives pixels, resize here. Some forms want both: resize first, then compress.
Photos you never want anyone to see are better kept out of the gallery altogether. See how to hide photos on Android, or how Sealcloak keeps them encrypted on your phone.
Frequently asked questions
Will resizing make my photo blurry?
Making a photo smaller keeps it sharp; the tool scales down in steps for a clean result. Making a photo much bigger than the original can't add detail, so enlarged photos look softer.
How do I resize without stretching the photo?
Keep 'Keep proportions' switched on. The photo then fits inside the width and height you typed, and the other side is worked out automatically.
Can I resize many photos at once?
Yes. Choose or drop several photos and each one is resized with the same settings, with its own download button.
Are my photos uploaded?
No. They're resized in your browser on your own device and never sent to any server.
Compress image: reduce photo size in KB, free and private
Shrink photos to the file size you need, without uploading them.
Blur face in photo: blur or pixelate, free and private
Blur or pixelate faces, plates and details before sharing.
Brighten photo online: fix dark pictures, free
Fix dark or dull photos in one tap, or adjust them yourself.