ExtractFox2 posts
Engineering
Every engineering post on the ExtractFox blog.
Engineering8 min read
Passport MRZ format explained: fields, check digits, and parser code
How to parse passport MRZ data under ICAO 9303: TD3 field positions, check digits, example MRZ lines, Python parser code, and when to extract the full passport instead.
Engineering6 min read
How to remove metadata from a PDF (for privacy)
Author, software, GPS, edit history — every PDF leaks more than you think. The reliable ways to strip metadata before sharing, in any tool you already have.