How to Open AVIF Files on iPhone

Before you start

AVIF is an image format that can offer smaller file sizes than JPEG at similar quality. On an iPhone, support depends on the version of iOS or iPadOS and the app you use. The process runs locally on the device for standard image viewing, but some third-party conversion tools may use an online service. Check whether the file is stored in Photos, Files, Mail or another app before choosing a method.

No extra app is required for basic viewing on recent iOS versions that include AVIF support. If the file does not open, check for a software update or use an alternative viewer.

Step-by-step instructions

1) Save the AVIF file to your iPhone if it is not already stored on the device. For a download in Safari or a messaging app, use the share or save action and choose Save to Files or Save Image when available.

2) Find the file in the Files app or Photos app. If the image saved to Photos, tap its thumbnail to see whether it displays normally.

3) If the image does not open or appears blank, open the Files app, locate the AVIF file and tap it. Quick Look may preview it without changing the file.

4) Use the share sheet when you need to convert or open the image in another app. Select the app that accepts image files or offers AVIF conversion.

5) If no installed app can open the file, download a viewer or converter from the App Store. Check the app description for AVIF support before installing.

Check the output

A successful result is a visible, correctly rendered image with no blank preview or error message. If you convert the file, open the new JPEG or PNG version and check that it displays in Photos or Files.

Be aware that conversion may change quality or remove animation. AVIF files can contain animation or transparency, but not every iPhone viewer or conversion app supports these features.

Common problems and next steps

How to open AVIF file on iPhone: if a downloaded file does not preview, first move it into Files and tap it again. If the file is identified as unsupported, the current iOS version or app may not provide AVIF decoding.

A file that opens on one Apple device but not another may have been saved with a newer profile or feature. Updating to the latest supported iOS version can resolve some compatibility issues. If the file still fails, use a dedicated viewer or convert it to a widely supported format.

Do not rename an AVIF file to a JPEG extension in an attempt to fix it. Renaming does not convert the image and may cause apps to reject the file.

For repeated conversions, choose an app or built-in shortcut that can handle AVIF input and export a standard format such as JPEG or PNG. Store the original file separately if you may need its smaller size or advanced features later.