Image resizer
Find the perfect fit. Resize photos to exact dimensions, without the guesswork.
Simple tools for everyday work
Choose JPG, PNG or WebP files from your device. Set output options, process images and download the results. Image processing happens locally in your browser. Keep your originals and inspect the output before publishing.
Read our practical guideWhich dimensions should I enter?
Practical context to help you decide what to change and what to check before using the output.
Pixel dimensions describe width and height, not the storage size of the file. With aspect ratio preserved, a 4000 × 3000 image can become 1200 × 900 without stretching. A requested 1200 × 1200 box may produce a proportional fit rather than an exact square.
If a form requires a precise square or portrait shape, crop to the desired ratio first, then resize. Enlarging a small source adds pixels but cannot create missing photographic detail. Check the current rules of your marketplace or upload form rather than relying on one universal preset.
Know the limit: Preserving proportions can yield different final dimensions from a requested bounding box. Crop when an exact ratio is required.