Most mature social networks do remove this information to prevent users accidentally sharing their locations. Can someone positively say whether Lemmy is aware enough to strip extra information from photos?
Exactly. Even if the standard Lemmy software does it, there's no guarantee that your instance admin hasn't altered the code or done something else to keep that data.
I’m hesitant to name anything specific since time exists and tech fluctuates, but there’s definitely a small, free utility app for your device that will strip exif data from your images.
Search for ‘remove exif’ in your App Store and see what people are saying about the top several apps listed.
(EtA: In nongeek, ‘exif’ data includes the photo’s gps coordinates, specific type of camera or device that created the image, timestamp, and other info, and its all quite easily viewable.).
Nerds use these apps more than most, so their reviews tend to go into some detail. There are certainly apps available that are easy to use on your device. Obviously don’t use an online service for this, either.
I load an image into Gimp, scale it to a smaller size and export it with EXIF and XMP removed. Make sense also since devices these days create 3200x3200 images which is unnecessarily large for uploading.