VPK file, used to store game data for some Source Engine games — file signature 34 12 AA 55 at offset 0

For VPK file, used to store game data for some Source Engine games, hex signature is 34 12 AA 55; offset is 0; extension is vpk, recorded from its source on 2026-08-03.

What the source says

VPK file, used to store game data for some <https://en.wikipedia.org/wiki/Source_Engine> Source Engine games

— en.wikipedia.org, retrieved 2026-08-03

Source

• en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-08-03. Due for re-check by 2027-08-03. This page as Markdown · OKF bundle · full dataset as JSON.