Scale an image by percentage or to exact pixel dimensions, with an optional lock to keep the original proportions.
Drop a file here or click to choose
Resizing changes how many pixels an image actually contains - useful for meeting an upload dimension limit, fitting a layout slot, or making a heavy photo lighter. Pick percentage mode to scale relative to the original, or exact-pixel mode to hit a specific width and height. Leaving the proportion lock on keeps the image from stretching: set the width and the height follows automatically. The resampling is performed on a canvas inside your browser, so the file is processed where it already sits.
Set percentage to 50 to halve both dimensions - a 4000x3000 photo becomes 2000x1500.
Switch to exact pixels, enter a width of 1200 with proportions locked, and the height is computed to match the aspect ratio.
Turn the proportion lock off to force an image into an exact square, accepting some stretch.
Will resizing up make a small image sharp?
No. Enlarging past the original dimensions has to invent pixels, so the result looks softer. Resizing down is where quality stays crisp.
Why is the height field ignored?
When "Keep proportions" is on, the height is derived from the width so the image never distorts. Turn the lock off to set width and height independently.
What format is the resized image saved in?
JPEGs are saved as JPEG; everything else is saved as PNG to avoid adding compression artefacts. Use the converter afterwards if you need a different format.
Does the image leave my device?
No. Reading, resampling, and saving all happen locally in this tab; nothing is uploaded.