Online tool for viewing metadata, including image Exif data (metadata embedded within images), such as camera setting used when taking a photographs, date and location information, and thumbnails. Also can be used for video, and tends to do better on this than other tools

Jeffrey's EXIF Viewer

Exif viewer that handles a large number of formats - popular and has been around for a long time.*
* Currently down (May 26, 2022) but has a long history of being reliable, so I'm not removing it for now


Exif viewer - can also be used to remove metadata

Metadata Interrogator

Desktop metadata viewer that works offline and extracts metadata from multiple filetypes