Why not just use the built-in tools?

The Photos app can crop but has no real compressor or format export, and iPhones save HEIC that many sites reject. A browser-based tool gives you precise control and works the same on every device.

Steps on iPhone

  1. Open this page in any browser on your iPhone and tap the tool below.
  2. Select or drag in your image — it is processed locally, never uploaded.
  3. Adjust the settings, then save the result back to your iPhone.

Tips

  • Works in Safari, Chrome and Edge — no app store download needed.
  • Because it runs offline in the browser, it is safe for private photos and documents.