About image resizer
Resizing changes how many pixels a picture has. That decides how large it looks on screen, how much space the file takes and whether a website or form will accept it.
Pixels or percentage
Use exact pixels when a form or design asks for a specific size, such as 1080 × 1080. Use a percentage when you just want a smaller copy, for example 50% to halve both the width and the height. Halving both sides leaves a quarter of the pixels, so the file usually gets much smaller.
Keeping the shape
If you enter only a width or only a height, the other side follows so the picture is not stretched. If you enter both, the picture is fitted to that exact box, which can change its proportions, so use it only when the exact size matters.
Tips
- Make a photo smaller, not larger. Enlarging a small picture only stretches the existing pixels and looks soft.
- Keep the original file and resize a copy, because shrinking cannot be undone.
- For a target file size in KB rather than pixels, use the Resize Photo to KB tool.
