Image Diet

Image Diet shrinks photos to a target size, resizes them, and converts between JPG, PNG and WebP — entirely on your device.

• Target size: pick 100 KB, 200 KB, 500 KB, 1 MB or your own number. Great for forms and uploads with size limits.
• Quality slider for when you just want a smaller file.
• Resize by long edge (1920 / 1280 / 1080 / 800 px or custom) or by percentage. Never upscales, always keeps the aspect ratio.
• Convert to JPG, PNG or WebP, or keep the original format. HEIC photos come out as JPG.
• Remove metadata (date, device, location) by default, or keep it with one switch.
• Batch: process several images at once, then save them all to your gallery or share them.
• Nothing leaves your phone. No account, no analytics. The free version shows ads; Pro removes them and raises the batch limit.