The tool qpdf can be used to remove all unreferenced (old metadata) objects, that were removed with Exiftool to make it permanent This prevents that the tags cannot be restored. Some else can recover the metadata as they are actually never deleted, as follows exiftool -pdf-update:all= ORIGINAL_file.pdf IrreversibleĪfter using the Exiftool for editing, the tool qpdf can be used to linearize the pdf file in order to remove all the old metadata (which were replaced by nulls) to make the edits with Exiftool irreversible. The main disadvantage of edits with Exiftool is that the edits are reversible. exiftool -all:all= CLEAN_file.pdf -overwrite_original exiftool -Title='This is the Title' -Author='Happy Man' -Subject='PDF Metadata' file.pdf -overwrite_originalĮxiftool can be used to remove all the metadata, in which case the metadata fields are replaced with nulls. Removal of metadataĮxiftool makes use of an incremental update technique to edit metadata. This helps reduce the footprint which limits the reconnaissance capability of the attacking party. Removal of metadata from a PDF file can be considered as an anti-forensic technique to limit the information contained in the file about the creator.

Next, you will pick Convert/Stream from the File menu on VLC. You need to indicate where you want your new file to be saved. Select VLC Media Player on your Mac and then pick Preferences from its main menu. With the click of a button you can remove the camera. Use Exiftool to run the following command shows all the current metadata in the PDF file. Removing an Audio Track from an MKV file on Mac. EXIF Purge is a small portable application to remove EXIF meta data from multiple images at once.

Exiftool delete all metadata