Resize without the guesswork
Pixel dimensions control how much visual information an image contains. A 4,000-pixel phone photo is useful for editing and print, but it is often excessive for a profile box, product grid or article thumbnail. Resizing it to the dimensions where it will actually appear reduces transfer time and memory use.
How to resize an image online
- Choose a JPG, PNG, WebP or HEIC image.
- Enter a width or height. Keep the ratio lock on to preserve the original proportions.
- Select Resize image, review the preview and download the new copy.
Dimensions and file size are different
Resizing changes the pixel grid; compression changes how efficiently those pixels are stored. If a form specifies both 600 × 800 pixels and 100KB, resize first, then use the 100KB compressor for the file-weight limit.