I’m using iPhone 13 pro max on iOS 15.4.1. I have camera formats setting on “most compatible”. When I take a picture with iPhone, the picture is in .jpeg format. However when I share the same pictures via iMessage, they are being converted to .heic format.

How do I stop this conversion and keep the photos in .jpeg format while continuing to use iMessages to share photos ? Here is screenshot of photo taken with phone, copied from camera roll to "Files" on iPhone, shows as .jpeg.

pic 1

Here is the same picture after I iMessage it to myself and drag and drop on desktop and File info. Sorry I had screenshot it as I cant upload .heic.

2 pic

3 pic

  • There appear to be several setting in play. Have you tried enabling low quality mode to force a downsample?
    – bmike
    Apr 12, 2022 at 14:30
  • Also, to clarify: are they converted inside your own photo library or just within Messages (so the receiver gets a heic picture)?
    – nohillside
    Apr 12, 2022 at 14:32
  • I have set the low quality mode with no affect. I take a picture and look at its format, its .jpeg. On the receiving end using iMessage, its .heic
    – Stumped
    Apr 12, 2022 at 15:44
  • If you share from Photos library there is “Options” on top of screen under number of selected photos. Clicking on that opens options window where are options: Automatic, Individual Photo and iCloud Link. Description below these options state that with Messages Automatic selects best format based on file size and number of items. So you can try Individual Photo, as it can be assumed that by selecting this option automatic conversion will not take place. Apr 12, 2022 at 18:48
  • The "All Options Data" I see is just a toggle on/off. I see the option under the number of selected photos to share. I do not have Automatic, Individual Photo and iCloud Link. I do not use iCloud photos. I did toggle it on for the next test of which I will post. The results were weird - when I save a photo to Files folder on my phone then share it via iMessage it stays .jpeg. Straight from camera roll to iMessage then send, it converts to .heic.
    – Stumped
    Apr 12, 2022 at 21:06


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