http://h7isucmawckzflxhipflydxvxpaytk5fozfk5immffg66rhboc74yxyd.onion/doku.php?id=securing_your_documents&do=edit
Some tools will just update the metadata fields, leaving the original metadata in situ and recoverable.
===Removing metadata from images===
Images, especially photographs, can be extremely rich in terms of the metadata that they retain.
If you take a photo on the camera on your iPhone, for example, you can view a lot of metadata about the image, including when it was taken, the camera settings, and potentially even the exact GPS coordinates of the image.