How to Convert Images on iPhone Without an App
You do not need to download an app to convert images on your iPhone. Safari can run browser-based converters that process files locally. Your camera settings can switch output formats at the system level. And the built-in Shortcuts app can automate format conversions with a single tap.
Here are three methods for converting images on iPhone, from the simplest to the most automated.
Step-by-Step Instructions
- Use Safari to convert images online
Open imageconvert.co/heic-to-jpg (or any conversion page) in Safari. Tap to select photos from your library. The conversion runs entirely on your iPhone using WebAssembly. Download the converted files directly.
- Change your camera format to JPG
Go to Settings > Camera > Formats and select Most Compatible. New photos save as JPG instead of HEIC. Existing HEIC photos are not affected. The trade-off is roughly double the storage per photo.
- Use the Shortcuts app for automated conversion
Open the Shortcuts app, create a new shortcut, and add the 'Convert Image' action. Set it to convert to JPG. Add a 'Save to Photo Album' action. Now you can select photos and run the shortcut to batch convert them to JPG.
Converting HEIC Photos to JPG on iPhone
The most common iPhone image conversion is HEIC to JPG. iPhones save photos as HEIC for storage efficiency, but many recipients and platforms need JPG. Using imageconvert.co in Safari is the fastest approach for occasional conversions: open the converter, select your photos, and save the JPGs back to your photo library or share them directly.
For frequent conversions, the Shortcuts app approach is more efficient. Create a shortcut once and run it from the share sheet whenever you need to convert photos. You can even add the shortcut to your home screen for quick access.
The Shortcuts App Method in Detail
Apple's Shortcuts app includes a built-in 'Convert Image' action that can change format, resize, and adjust quality. To set up a HEIC-to-JPG shortcut: open Shortcuts, tap the plus icon, search for 'Convert Image', add it, set the format to JPEG, optionally set the quality, then add a 'Save to Photo Album' action after it.
You can extend this shortcut with conditions (only convert HEIC files), batch processing (accept multiple photos), and quality settings. The shortcut can be triggered from the Share Sheet in any app, making it accessible wherever you view photos.
Sharing Photos as JPG Automatically
iOS has a built-in setting that automatically converts HEIC to JPG when sharing. Go to Settings > Photos and under 'Transfer to Mac or PC', select 'Automatic'. This converts HEIC photos to JPG when sharing via AirDrop, email, or USB transfer to non-Apple devices.
This automatic conversion does not affect the photos stored on your iPhone (they remain HEIC), it only converts them during the sharing process. This is the most transparent solution for people who want HEIC's storage efficiency but need compatibility when sharing.
Frequently Asked Questions
Does converting photos on iPhone reduce quality?
Converting HEIC to JPG involves lossy re-compression with minor quality loss that is invisible at 85% or higher quality. Converting to PNG is completely lossless.
Can I convert multiple iPhone photos at once?
Yes. Both imageconvert.co in Safari and the Shortcuts app support batch processing. Select multiple photos and convert them all in one operation.
Will changing camera settings to Most Compatible affect photo quality?
JPG photos at the camera's default quality are visually excellent. The main difference is file size: JPG photos are roughly twice as large as HEIC, which means you can store fewer photos in the same storage space.
Are my photos uploaded to a server when using imageconvert.co on iPhone?
No. The conversion runs entirely in Safari using your iPhone's processor. Your photos never leave your device.