Photos straight from a phone are often several megabytes — too large for an application form, and far too heavy for a web page. This re-encodes the image at a quality you choose and shows you exactly how much it saved.
Shrink an image's file size for faster uploads and web pages.
At quality 70 the difference is usually hard to see while the file gets substantially smaller. Lower settings shrink it further but soften detail, so it's worth trying a couple of values.
Resize image
Scale an image to an exact size, or fit it inside one.
Convert image
Change an image's format — including HEIC from an iPhone into JPG.
Remove background
Cut the background out of an image and get a transparent PNG.
App icon generator
One image in, every iOS, Android and web icon size out, as a ZIP.