Main menu move to sidebar hide Navigation Main page Contents Current events Random article About Wikipedia Contact us Contribute Help Learn to edit Community portal Recent changes Upload file Special pages Search Search Appearance Donate Create account Log in Personal tools Donate Create account Log in Contents move to sidebar hide (Top) 1 Software 2 See also 3 References 4 External links Toggle the table of contents WARC (file format) 6 languages Català Deutsch 日本語 한국어 Русский Українська Edit links Article Talk English Read Edit View history Tools Tools move to sidebar hide Actions Read Edit View history General What links here Related changes Upload file Permanent link Page information Cite this page Get shortened URL Print/export Download as PDF Printable version In other projects Wikimedia Commons Wikidata item Appearance move to sidebar hide From Wikipedia, the free encyclopedia (Redirected from Web ARChive ) File format Not to be confused with ARC (file format) , WAR (file format) , or WARC bands . For other uses, see Web archive (disambiguation) . Web ARChive Filename extensions warc Internet media type application/warc Extended from ARC [ 1 ] Standard ISO 28500:2017 [ 2 ] Open format ? Yes Website iipc .github .io /warc-specifications /specifications /warc-format /warc-1 .1-annotated / The WARC (Web ARChive) archive format specifies a method for combining multiple digital resources into an aggregate archive file together with related information. These combined resources are saved as a WARC file which can be replayed using appropriate software such as ReplayWeb.page , or used by archive websites such as the Wayback Machine . The WARC format is a revision of the Internet Archive 's ARC_IA File Format [ 3 ] that has traditionally been used to store " web crawls " as sequences of content blocks harvested from the World Wide Web . The WARC format generalizes the older format to better support the harvesting, access, and exchange needs of archiving organizations. Besides the primary content currently recorded, the revision accommodates related secondary content, such as assigned metadata , abbreviated duplicate detection events (see §7.6 "revisit"), and later-date transformations. [ 4 ] The WARC format is inspired by HTTP/1.0 streams, with a similar header and the use of CRLFs as delimiters, making it very conducive to crawler implementations. First specified in 2008, [ 5 ] WARC is now recognised by most national library systems as the standard to follow for web archiving, [ 6 ] though some have also started to list WACZ as an acceptable format. [ 7 ] [ 8 ] Software [ edit ] ArchiveBox [ 9 ] ArchiveWeb.page [ 10 ] Apache Nutch Conifer [ 11 ] har2warc [ 12 ] Heritrix web archiver in Java libarchive ReplayWeb.page [ 13 ] Scoop [ 14 ] StormCrawler warcit wget (since version 1.14) [ 15 ] WebArchiver [ 16 ] WebsiteArchiver [ 17 ] See also [ edit ] ZIM (file format) HAR (file format) References [ edit ] ^ "Introduction" . SourceForge . Archived from the original on 16 February 2015 . Retrieved 5 March 2015 . ^ "Information and documentation -- WARC file format" . Retrieved 16 March 2018 . ^ "ARC_IA, Internet Archive ARC file format" . www.digitalpreservation.gov . 14 February 2008 . Retrieved 2015-05-09 . ^ "WARC, Web ARChive file format" . www.digitalpreservation.gov . 31 August 2009 . Retrieved 2015-05-09 . ^ Arvidson, Allan; Kunze, John; Mohr, Gordon; Stack, Michael (5 July 2008). "The WARC File Format" . IETF . Retrieved 2021-04-29 . ^ Allegrezza, Stefano (21 April 2016). "Nuove prospettive per il Web archiving: Gli standard ISO 28500 (Formato WARC) e ISO/TR 14873 sulla qualità del Web archiving" . Digitalia (in Italian). 2015 : 49– 61. ^ "Web Archive Collection Zipped" . www.loc.gov . 2023-05-19 . Retrieved 2025-03-28 . ^ "Preferred file formats" . digitalpreservation.no . 2024-12-05 . Retrieved 2025-03-28 . ^ "ArchiveBox" . ArchiveBox . Retrieved 2025-03-06 . ^ "ArchiveWeb.page • Webrecorder" . Webrecorder . 2025-01-10 . Retrieved 2025-03-28 . ^ "Frequently Asked Questions" . Conifer User Guide . Retrieved 2025-03-27 . ^ webrecorder/har2warc , Webrecorder, 2025-01-25 , retrieved 2025-03-28 ^ "User Guide - Replay Webpage Docs" . replayweb.page . Retrieved 2025-03-28 . ^ harvard-lil/scoop , Harvard Library Innovation Laboratory, 2025-03-26 , retrieved 2025-03-28 ^ Scrivano, Giuseppe (August 6, 2012). "GNU wget 1.14 released" . GNU wget 1.14 released . Free Software Foundation, Inc . Retrieved February 25, 2016 . ^ "WebArchiver" . WebArchiver . Retrieved 2026-04-09 . ^ "WebsiteArchiver - Save & Organize" . websitearchiver.net . Retrieved 2026-04-22 . External links [ edit ] WARC File Format specifications Archived 2010-05-04 at the Library of Congress Web Archives The WARC File Format (ISO 28500) - Information, Maintenance, Drafts WARC, Web ARChive file format WARC implementation guidelines Welcome 13. Internet Archive ARC files The WARC Ecosystem v t e Archive formats Archiving only ar cpio shar tar LBR WAD WARC Compressing only Brotli bzip2 compress gzip Zopfli LZMA LZ4 lzip lzop SQ xz Zstandard PAQ Archiving and compressing 7z ACE ARC ARJ B1 Cabinet cfs cpt dar DGCA .dmg .egg kgb LHA lrzip LZX MPQ PEA RAR rzip sit sitx SQX UDA Xar zoo ZIP ZPAQ Software packaging and distributing apk App APPX deb HAP ipa JAR WAR Jakarta EE RAR EAR MSI MSIX Package (macOS) RPM XAP XBAP Document packaging and distributing OEB Package Format OEBPS Container Format Open Packaging Conventions Comparison List Category This World Wide Web –related article is a stub . You can help Wikipedia by adding missing information . v t e Retrieved from " https://en.wikipedia.org/w/index.php?title=WARC_(file_format)&oldid=1351262751 " Categories : Archive formats Web archiving Web archives World Wide Web stubs Hidden categories: CS1 Italian-language sources (it) Articles with short description Short description is different from Wikidata Webarchive template other archives All stub articles This page was last edited on 26 April 2026, at 23:27  (UTC) . Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy . Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. , a non-profit organization. Privacy policy About Wikipedia Disclaimers Contact Wikipedia Legal & safety contacts Code of Conduct Developers Statistics Cookie statement Mobile view Search Search Toggle the table of contents WARC (file format) 6 languages Add topic