Most application forms give two limits: the dimensions (say 200×230 pixels or 3.5×4.5 cm) and a file size range (say 20 to 50 KB). Enter both here and you get a JPG that meets them, with the DPI written into the file.
Crop a photo to 35×45 mm, 2×2 inch and other sizes, set the background and DPI, and print a 4×6 sheet.
Shrink JPG, PNG or WebP photos to a target like 100 KB, or by quality. Works on many images at once.
Crop freely or to a ratio like 1:1 or 35×45 mm, rotate by 90° and mirror. Works with a mouse or touch.
Remove a photo's background with on-device AI and replace it with white, blue, any colour or transparency.
Turn a phone photo of your signature into clean black or blue ink on white or transparent, trimmed to fit.
Convert images between JPG, PNG and WebP, one at a time or in a batch.