How to Convert PNG to JPG on iPhone

PNG files hold up well for screenshots and graphics with transparency, but they’re much larger than they need to be for an ordinary photo, and some upload forms only take JPG. Grabio converts a PNG to JPG right on your iPhone in a couple of taps, no app to install.

Why PNG isn’t always the right format

PNG uses lossless compression, so file sizes stay large, especially for photos with lots of color detail. It also supports transparency, which most photo uploads don’t need. JPG trades a small amount of quality for a much smaller file, and it’s the format almost every upload form, printer, and older app expects.

How to convert PNG to JPG on iPhone with Grabio

1. Add Grabio to your iPhone once, it’s a free Apple Shortcut with no App Store download and no sign-up. Add Grabio to your iPhone.
2. Open the PNG file in Photos or Files and tap the Share button.
3. Scroll down the share sheet and tap Grabio.
4. Choose Photo to JPG from the Grabio menu.
5. Grabio saves the JPG straight to your Photos app with a “Saved” confirmation.

Is it private and free on iPhone?

Yes. The conversion runs entirely on your iPhone using Apple’s own image tools, nothing is uploaded anywhere. Grabio is 100% free with no account, no login, and no subscription.

Convert PNG to JPG on iPhone: FAQ

What happens to transparency in a PNG when it becomes a JPG?

JPG doesn’t support transparency, so any transparent areas in your PNG get filled in with a solid background, usually white, when it converts. If you need to keep transparency, keep the file as a PNG.

Will the JPG be smaller than my PNG?

In almost every case, yes. JPG’s compression is built for photos and typically produces a file a fraction of the size of the same image as a PNG, especially for photos rather than graphics.

Does converting to JPG reduce image quality?

JPG uses lossy compression, so there’s a small quality trade off compared to PNG’s lossless format, but at normal quality settings it’s not something you’ll notice looking at the photo on screen.

Related on iPhone: convert HEIC to JPG, convert HEIC to PNG, or Photo Tools.