The WARC File Format (Version 0.16)

Document Type Expired Internet-Draft (individual)
Authors John Kunze  , Gordon Mohr  , Michael Stack 
Last updated 2008-07-05
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The WARC (Web ARChive) format specifies a method for combining multiple digital resources into an aggregate archival file together with related information. Resources are dated, identified by URIs, and preceded by simple text headers. By convention, files of this format are named with the extension ".warc" and have the MIME type application/warc. The WARC file format is a revision and generalization of the ARC format used by the Internet Archive to store information blocks harvested by web crawlers. This document specifies version 0.16 of the WARC format.


John Kunze (
Gordon Mohr (
Michael Stack (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)