Standard 7-Zip does not natively support VPK files, but you can add this functionality:
Converting (Valve Pak) files to ZIP is a common task for modders and gamers looking to inspect or modify game assets from titles like Counter-Strike 2 , Team Fortress 2 , and Left 4 Dead 2 . While VPK files are specialized archives for the Source Engine, ZIP files are more universally accessible for standard extraction tools. What is a VPK File? vpk to zip verified
A: No — the Vita expects .vpk . However, you can extract the ZIP and repackage using VPK tools. Standard 7-Zip does not natively support VPK files,
Open the ZIP file and attempt to extract it. If extraction completes with , your conversion is verified. Team Fortress 2