Image Resizer
Scale a picture down, turn it the right way up, or move it to a different format. The file is read and rewritten in the page, so it never gets uploaded anywhere.
Drop an image here
or click to choose one. PNG, JPEG, WebP, GIF, BMP and SVG.
Settings
Presets set the longest side, keeping the shape. Picking one larger than the original enlarges it, though that cannot add detail that was never there.
Orientation
JPEG cannot store transparency, so clear areas need a colour.
Result