Is My Photo Data Safe With a Metadata Tool?
What to check before letting any tool near your only copy of your family photos.
Ask two questions. Does it upload anything, and can it undo what it does. Web-based fixers fail the first: your photos, with GPS in them, are copied to a server you know nothing about.
Tools that rewrite files in place with no backup fail the second. If something goes wrong halfway through a hundred thousand photos, you want the originals still sitting there.
Takeout JSON Metadata Fixer runs entirely on your own computer and works with the network off. It offers a dry run, and it can keep every original in a subfolder. Nothing is uploaded, ever.