Image Resizer
Pick a size, drop an image in, and download the result. The image never leaves your device — the resizing happens in your browser, so nothing is uploaded to us or anyone else.
On platform sizesThe presets below are common aspect ratios and pixel sizes, not verified platform requirements. Platforms change their specs without notice, and we do not publish numbers we have not checked against a primary source. Confirm against the platform's own help page if you are hitting a hard requirement.
Cover or contain?
Cover fills the target frame completely and crops whatever does not fit. Use it when the frame matters more than the edges of the picture — most feed images work this way.
Contain keeps the whole image and pads the remaining space. Use it when cropping would cut something important, like text or a face near an edge.
Neither one stretches the image. Distorting the aspect ratio is almost never what you want, so this tool does not offer it.