WARC
WARC, short for Web ARChive, is a file format designed for storing web content captured during web crawling and preservation activities. A WARC file contains a sequence of records that can hold both the HTTP transaction data and the actual content that was captured, along with metadata. The format is widely used by web archives, libraries, and research institutions to preserve snapshots of websites for long-term access and study. It evolved from the older ARC format and was standardized by the International Organization for Standardization as ISO 28500, consolidating archival practices for web content.
Each record in a WARC file begins with a header that includes fields such as WARC-Type, WARC-Target-URI,
WARC files are frequently compressed for storage efficiency and are produced by many web crawlers and preservation