Your own photos can carry more than you think
A photo straight off a phone or camera typically embeds EXIF data: device model, exposure settings, a timestamp, and — if location services were enabled — the exact GPS coordinates of where it was taken. None of this is visible in a normal photo viewer, which is exactly why it's easy to forget it's there. Before posting a photo publicly, checking what metadata it carries takes a few seconds and can prevent an unintentional location disclosure.
Reverse image search can surface images you didn't expect to be public
Because reverse image search works by matching visual content against a crawled index, any image that's been publicly posted anywhere — even briefly, even somewhere you forgot about — can potentially resurface through a reverse search by someone who has a copy of it. This cuts both ways: it's the same mechanic that lets you find out where your own photos have been reused.
Which platforms strip metadata, and which don't
Most major social platforms strip EXIF data on upload as a privacy default, which is generally good for casual sharing but means you can't rely on a downloaded social media photo carrying reliable metadata for verification purposes either. Photos sent directly — via email, messaging apps in original-quality mode, or file transfer — much more often retain full metadata, including GPS. If you're sending a photo directly rather than through a platform that strips it, that's the moment to check and clean it yourself.
A practical before-you-share checklist
Check the image's EXIF data for GPS coordinates and anything else you wouldn't want attached. Decide whether metadata should be stripped entirely or selectively — you might want to keep a copyright/artist field while removing location and device details. Consider whether the image or a close crop of it has appeared elsewhere before, since context you're not aware of can travel with a reposted image. None of this requires anything more than a browser-based EXIF tool — there's no need to install software or hand the file to a third-party service just to check or clean it.
The EXIF checker linked below reads and strips metadata entirely in your browser — nothing is uploaded, which matters most for exactly this kind of check.