What GZip Header Inspector does
Parse the RFC 1952 member header, optional header fields, timestamp, OS byte, and header length.
Input and output contract
Only the first 4 KiB of the selected file is read. A structured JSON-like header report.
Important limitations
It does not decompress the member, validate the payload CRC32/ISIZE trailer, or repair the file.
Safety
This Phase 44 Tool runs locally in the browser with explicit input bounds. It does not infer game compatibility or repair unsupported formats.