How to resize and rotate an image
- Add the images you want to change. If you add one image, its current dimensions fill in automatically.
- Type a new width or height in pixels. With Keep aspect ratio ticked, the other value follows automatically so the picture is not stretched.
- To straighten a sideways photo or scan, choose a rotation.
- Press Resize. One image gives a single Save; several give a button each plus a ZIP.
About this tool
Resizing an image changes its pixel dimensions — the actual width and height — rather than just how large it appears on screen. This free image resizer also rotates, and runs entirely in your browser without uploading your pictures.
Resizing is usually the right first move when a file is too big. A modern phone photo is often 4000 pixels wide, while a website rarely displays anything above 1600 and a profile picture needs perhaps 400. Cutting the dimensions removes pixels that were never going to be seen and shrinks the file dramatically, with far less visible damage than compressing the full-size image hard.
Keep aspect ratio on unless you specifically want to distort the picture; with it on, setting one dimension calculates the other. Note that enlarging an image cannot add detail that was never captured — scaling a small picture up produces a larger, blurrier version of the same thing.
Frequently asked questions
- How do I resize without stretching?
- Leave "Keep aspect ratio" ticked and set only one dimension. The other is calculated to keep the original proportions.
- Can I make a small image bigger?
- You can, but it will not gain detail. Enlarging interpolates existing pixels, so the result looks softer than the original.
- How do I rotate a sideways scan?
- Choose 90° right, 90° left or 180° from the rotate menu before pressing Resize.
- Are my images uploaded to resize them?
- No. Resizing uses your browser’s own canvas and nothing is transmitted.
- Should I resize or compress?
- Resize first if the image is far larger than it needs to be — it saves more with less visible loss. Compress afterwards if it still needs to be smaller.