ExifTool

Pass files or directories to inspect metadata, print selected tags or export a text report. Assign tag values to write them, use empty assignments to delete, or tagsFromFile to copy supported metadata. Writing preserves an _original backup by default; verify the edited file before removing that copy. Read, write and create support differ by format. Recursive traversal normally skips dot-directories even though ordinary directory processing includes hidden files. The source uses Perl's Artistic-or-GPL terms.