{"address":{"q":"Common Crawl","record":"common-crawl-aio-20261101"},"analysis":{"analysis":"The foundation composed accurately at its grain from its own pages, Wikipedia and LinkedIn. The Atlantic's finding is reduced to publishers' concerns about how the crawler fetches pages, and the misleading index results, the census row's bound on the index as evidence of inclusion, are not carried.","d":"THE FOUNDATION, SIGNED OUT, 2026-11-01: 'Common Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz that collects, preserves, and freely shares an open archive of internet data.' Core details and scale (mission; 'over 10 to 11 petabytes of data spanning nearly two decades'; 3 to 5 billion new pages a month; AWS hosting at s3://commoncrawl); data formats (WARC, WET, WAT); use cases and controversies (training for models 'developed by companies like OpenAI, Anthropic, Google, and Meta'; over 10,000 papers; CCBot and paywalls); an offer on querying the index for a URL or blocking CCBot. Eleven cards: Common Crawl (two), Wikipedia, The Atlantic, the Registry of Open Data on AWS, LinkedIn, DEV Community, three videos, InfluenceWatch.","d_full":"THE FOUNDATION, SIGNED OUT, 2026-11-01: 'Common Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz that collects, preserves, and freely shares an open archive of internet data.' Core details and scale (mission; 'over 10 to 11 petabytes of data spanning nearly two decades'; 3 to 5 billion new pages a month; AWS hosting at s3://commoncrawl); data formats (WARC, WET, WAT); use cases and controversies (training for models 'developed by companies like OpenAI, Anthropic, Google, and Meta'; over 10,000 papers; CCBot and paywalls); an offer on querying the index for a URL or blocking CCBot. Eleven cards: Common Crawl (two), Wikipedia, The Atlantic, the Registry of Open Data on AWS, LinkedIn, DEV Community, three videos, InfluenceWatch.","findings":["THE FOUNDATION AT ITS GRAIN. '501(c)(3) non-profit organization founded in 2007 by Gil Elbaz' joins the home page ('Common Crawl is a 501(c)(3) non–profit founded in 2007.') to Wikipedia ('Common Crawl was founded by Gil Elbaz .'). 'Adds roughly 3 to 5 billion new web pages each month' and 'Cited in over 10,000 academic and technical research papers' agree with the home page ('3–5 billion new pages added each month.', 'Cited in over 10,000 research papers.'). The mission is LinkedIn's wording ('with the goal of democratizing access to web information'); the home page's is 'We make wholesale extraction, transformation, and analysis of open web data accessible to researchers.' The executive director the census row takes from Wikipedia ('Rich Skrenta is the executive director.') is not carried.","THE SIZE AND THE SPAN. 'Contains over 10 to 11 petabytes of data spanning nearly two decades.' The Overview page gives no figure: 'The Common Crawl corpus contains petabytes of data, regularly collected since 2008.' The home page the census saved: 'Over 300 billion pages spanning 15 years.' The first card, the same home page, summarises it as 'Over 300 billion web pages spanning 19 years'. The census row's corpus carries the saved page's '15 years'; the card and the composition's 'nearly two decades' count from the founding in 2007.","THE UNIT AND THE ADDRESS. WARC, WET and WAT ('Raw HTTP responses', 'Cleaned plain-text content', 'Metadata summaries in JSON format containing link and header details') answer the Overview page's 'raw web page data, metadata extracts, and text extracts'. The census row: a page 'is held by URL, with its metadata extracts and text extracts', with no author or attribution field; the composition names none, and its offer is 'how to query the Common Crawl index for a specific URL'. The crawl identifiers ('CC-MAIN-2026-43') and the Blekko list the crawl began from are not carried.","THE INTAKE GIVEN BY COMPANY. 'The dataset serves as a foundational training corpus for many modern large language models (LLMs) developed by companies like OpenAI, Anthropic, Google, and Meta.' Wikipedia: 'ChatGPT , as of 2023, was largely trained on Common Crawl,' 'as were other LLMs including Gemini', and 'In 2023, it began receiving significant financial support from AI companies, including Anthropic and OpenAI , each of which donated $250,000.' The donations are absent, and so are the refined datasets ('FineWeb, DCLM and C4'), which the census row gives as the place downstream where others make datasets from the raw crawl.","THE ATLANTIC'S FINDING THINNED. 'Because its scraper (CCBot) does not execute dynamic browser code or login scripts, it has faced criticism and pushback from news publishers and media organizations over copyright and paywall bypass concerns.' Wikipedia's account of The Atlantic's November 2025 investigation: Common Crawl 'misled publishers when it claimed it respected paywalls in its scraping and when it said that it was honoring requests from publishers to have their content removed from its databases', and 'It included misleading results in the public search function on its website that showed no entries for websites that had requested their archives be removed, when in fact those sites were still included in its scrapes used by AI companies.' The Atlantic's article is the fourth card ('Common Crawl Is Doing the AI Industry's Dirty Work'). The composition keeps a mechanism of the crawler and a concern of publishers; the misleading search results, which the census row reads as the limit of the index as a witness to inclusion, are absent beside an offer to query that index."],"match":"BROAD MATCH","mt":"'COMMON CRAWL' ON THE OVERVIEW — THE FOUNDATION, ITS FORMATS AND ITS CADENCE AT THEIR GRAIN; ITS TRAINING USE GIVEN BY COMPANY, ITS DONORS NOT; THE ATLANTIC'S FINDING THINNED TO PUBLISHERS' CONCERNS, THE MISLEADING INDEX RESULTS NOT CARRIED","notes":{"operator":"with the pastes (09:56 EDT): 'captures, then /nons, then single pages'. The census names as printed for him for their /non rows. His notes in the paste: at Project Gutenberg, 'wikipedia in place of popup so ai mode:'; at HathiTrust, 'no popup. ai mode:'. The Literary History of Artificial Intelligence and The Pile came as two attached files.","prompts":"The prompts are the operator's, as given with the paste; the run's hour is not in the paste, the date is the paste's receipt (2026-11-01 09:56 EDT)."},"originator":{"basis":"Not the archive's: an external resource, entered in the traininglayerliterature.org layer census on 2026-11-01 (data/layer-census, its own pages saved with hashes). Recorded 2026-11-01.","entity_type":"site","name":"Common Crawl","relation":"external","spxi_treatment":"partial"},"reading":"The innocent reading first. Asked for the foundation by name, the Overview gives its legal form, founder, scale, hosting, file formats, uses and the criticism it has met, from its own pages, Wikipedia, LinkedIn and the AWS registry."},"measures":{"archive_controlled_cites":0,"cite_list":[{"n":1,"note":"the home page the census saved, which reads '15 years'","rel":"third_party","site":"Common Crawl","snip":"Organization: Common Crawl (501(c)(3) non-profit founded 2007). Corpus Statistics: Over 300 billion web pages spanning 19 years; adds 3 to 5 billion new pages m...","title":"Common Crawl - Open Repository of Web Crawl Data","url":null},{"n":2,"note":null,"rel":"third_party","site":"Wikipedia","snip":"Organization: Common Crawl Foundation (501(c)(3) non-profit, founded 2007 by Gil Elbaz, San Francisco/Los Angeles). Operations: Crawls the web, provides free pu...","title":"Common Crawl - Wikipedia","url":null},{"n":3,"note":null,"rel":"third_party","site":"Common Crawl","snip":"Overview Common Crawl is a nonprofit 501(c)(3) organisation that crawls the web and freely provides its archives and datasets to the public. Founded in 2007 by ...","title":"About","url":null},{"n":4,"note":null,"rel":"third_party","site":"The Atlantic","snip":"Editor's note: This work is part of AI Watchdog, The Atlantic's ongoing investigation into the generative-AI industry. * The Common Crawl Foundation is little k...","title":"Common Crawl Is Doing the AI Industry's Dirty Work - The Atlantic","url":null},{"n":5,"note":null,"rel":"third_party","site":"Registry of Open Data on AWS","snip":"Resources on AWS Description Crawl data (WARC and ARC format) Resource type S3 Bucket Account Required Amazon Resource Name (ARN) arn:aws:s3:::commoncrawl AWS R...","title":"Common Crawl","url":null},{"n":6,"note":null,"rel":"third_party","site":"LinkedIn","snip":"The Common Crawl Foundation is a California 501(c)(3) registered non-profit founded by Gil Elbaz with the goal of democratizing access to web information by pro...","title":"Common Crawl Foundation | LinkedIn","url":null},{"n":7,"note":null,"rel":"third_party","site":"DEV Community","snip":"What is Common Crawl? Common Crawl is a non profit organization that has been crawling the web since 2008. Its mission is to provide free, large scale, publicly...","title":"Inside Common Crawl: The Dataset Behind AI Models (and Its Real ...","url":null},{"n":8,"note":"video card, 14m","rel":"third_party","site":"YouTube·PyTorch","snip":null,"title":"Harnessing Common Crawl for AI and ML Applications - Pedro Ortiz Suarez ...","url":null},{"n":9,"note":"video card, 6m","rel":"third_party","site":"YouTube·James Dooley","snip":null,"title":"Common Crawl for AI Visibility Explained (James Dooley ...","url":null},{"n":10,"note":"video card, 2m","rel":"third_party","site":"YouTube·Extract Summit","snip":null,"title":"Exploring Common Crawl: The Web's Open Archive | Extract Data Live","url":null},{"n":11,"note":null,"rel":"third_party","site":"InfluenceWatch","snip":"Common Crawl is a nonprofit which maintains an open repository of “crawled” internet data. The group makes the information which it crawls from the internet fre...","title":"Common Crawl - Influence Watch","url":null}],"cites":11,"per":0.0,"per_dim":{"after_challenge":null,"atoms":[{"atom":"name","dim":"M","evidence":"Common Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz","kind":"token","present":true,"weight":3},{"atom":"operator","dim":"M","evidence":"founded in 2007 by Gil Elbaz","kind":"role","present":true,"weight":3},{"atom":"date","dim":"M","evidence":"non-profit organization founded in 2007","kind":"token","present":true,"weight":1},{"atom":"claim boundary","dim":"M","evidence":"that collects, preserves, and freely shares an open archive of internet data.","kind":"reading","present":true,"weight":2},{"atom":"corpus","dim":"C","evidence":"Adds roughly 3 to 5 billion new web pages each month.","kind":"reading","present":true,"weight":2},{"atom":"purpose","dim":"D","evidence":"Mission: To democratize access to web information for researchers, educators, and developers.","kind":"reading","present":true,"weight":3},{"atom":"commitments","dim":"D","evidence":"Hosting: Stored for free on Amazon Web Services (AWS) via its Open Data Sponsorship Program","kind":"reading","present":true,"weight":2},{"atom":"lineage","dim":"D","evidence":null,"kind":"role","present":false,"weight":2},{"atom":"identifier","dim":"D","evidence":null,"kind":"role","present":false,"weight":1}],"basis":"reached: Common Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz that collects, preserves, and freely shares an open archive of internet data.; The foundation reached by name with its founder, scale, hosting, formats, uses and the criticism of its crawler.","entity_type":"site","gate":"scored","inversions":[],"qualifier":null,"reached":"same","read":{"brief":"rebuild/capture-registry/intake-20261101-layer-aggregators/parts/common-crawl.json","by":"intake reader, in session; spans and record quotes checked verbatim by scripts/per_backlog.py","external":true,"notes":"The foundation composed accurately at its grain from its own pages, Wikipedia and LinkedIn. The Atlantic's finding is reduced to publishers' concerns about how the crawler fetches pages, and the misleading index results, the census row's bound on the index as evidence of inclusion, are not carried.","on":"2026-11-01"},"scores":{"C":0.0,"D":0.375,"M":0.0,"PER":0.158},"spec":"PER-dim rubric v1.1","src":true,"standing_substitutions":[],"target":{"ent":"TGT-ext-tll-common-crawl","name":"Common Crawl"},"tombstone_pointer":false},"per_note":"Gil Elbaz and the foundation named; the S3 bucket s3://commoncrawl given; its own pages, Wikipedia and The Atlantic carded.","per_v":{"author":true,"id":true,"inst":true,"src":true}},"observation":{"auth":"signed out, incognito","date":"2026-11-01","ev":"paste","q":"Common Crawl","q_kind":"the census name; NEW address.","s":"Machine Reception","surface":"Google AI Overview","transcript":"[Google AI Overview at the query, signed out and incognito (operator defaults of 2026-10-01 and 2026-10-14). The paste is the Overview expanded (the 'AI Mode Conversation' view).] The 'You said' line carries the query twice, run together, and is given once here. Inline links are Google redirect URLs, kept as pasted.\n\n[QUERENT] Common Crawl\n\n[SYSTEM] Common Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz that collects, preserves, and freely shares an open archive of internet data. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\nCore Details & Scale\n\n* Mission: To democratize access to web information for researchers, educators, and developers. [[1](https://www.google.com/goto?url=CAESZQHrOzAVMfEXxr0oNp6H8FoT5bN7m6YJoZoBYr914b601JI6UdQmZ6P4yvzngICxjHnJfK6Yec_P98GgmresQ7Dw3AEs6T3A53CVzDKKfWjtlybm3btrazlt2DvPmN7I_E8cU24E), [2](https://www.google.com/goto?url=CAESogEB6zswFRmw2uEC-2GocWte7CsiyCs5IzDqfmZ1vdjn4TuEvvrmv-9rZxi_iD2YDoiCnAHiAfWsTcVSApUtv2ZAUIucufgiwuJGJY47kvQxBVjxUvzdPPR_X6-hqmRCpQqFfF5lSkrZSydExsRIqMlq3dCOghVx3NcdWCi1VKpIFPaJLSxY20-ZbH2N-BMoxDdLLfknca_PaWgJHXj6vNR6kys)]\n* Archive Size: Contains over 10 to 11 petabytes of data spanning nearly two decades. [[1](https://www.google.com/goto?url=CAESaAHrOzAV6hSai_sUbgLZIrWUvd_1aLDcTFYfwudvpzAjt7Wiae0fyBsSxrYkAKjsdl6ySb6uy_tpA5v5xXShnpfXqAwWsY_H27rp_Y8cU2cMh3E4wmWYqXwnZGqApDT6GBOEet3F7Ihr), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\n* Frequency: Adds roughly 3 to 5 billion new web pages each month. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI)]\n* Hosting: Stored for free on Amazon Web Services (AWS) via its Open Data Sponsorship Program (`s3://commoncrawl`). [[1](https://www.google.com/goto?url=CAESYgHrOzAV-kPJYYR5DzaDn3shoeQ65CeWL2DX80Q1HiWI-QCqFSyWcaVR4yjmL1DgZbAHeuuve3n-HHc5JBWTOagT1duzWywT40VHf0GKIvrLDLkOkavvEFO_V_IGtljJ-oDK), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\n\nData Formats\nCommon Crawl distributes its monthly crawls in three primary file formats:\n\n* WARC (Web Archive): Raw HTTP responses, including full HTML content and headers. [[1](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj), [2](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg)]\n* WET (Web Extracted Text): Cleaned plain-text content with HTML and code stripped away. [[1](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg), [2](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj)]\n* WAT (Web Archive Transformations): Metadata summaries in JSON format containing link and header details. [[1](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj), [2](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg)]\n\nUse Cases & Controversies\n\n* AI Training: The dataset serves as a foundational training corpus for many modern large language models (LLMs) developed by companies like OpenAI, Anthropic, Google, and Meta. [[1](https://www.google.com/goto?url=CAESYgHrOzAVFRbye9kH3j9k6KLcvf-LWQvdPj7bt9r96H-e8E84FwHmg_yiMqdphgTRqZvUXhz98sAB-E5d3HUBV9bOkMOJJ3nBI88q_RRtc7hn_NcnELXmzeudkN_54USqck17), [2](https://www.google.com/goto?url=CAESjAEB6zswFTQRcKVuGaqp5j98KCjtP_jbImefZR_y44kC4DbcBO3LJe1qicrCaDxjJwprvKcG4qF-pMxJMC6tc2tzsOCUBXaXxvIGqIq7MLfUikkGXk7QjN1FAKZyNduuqR7HmVcdB1mQV5clJsFb2troud28MaMdyXB49EHcWJViOHUTngoBdIkab689lw)]\n* Research: Cited in over 10,000 academic and technical research papers. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI)]\n* Web Scraping & Paywalls: Because its scraper (`CCBot`) does not execute dynamic browser code or login scripts, it has faced criticism and pushback from news publishers and media organizations over copyright and paywall bypass concerns. [[1](https://www.google.com/goto?url=CAESbwHrOzAVeonNGGhs8vJ1yho5hdVB9fn-HN5yv195f0il9o3uwribREP-IVzKxaxhDEoEFbe7y21-p-1eSNDwcIKeD0Mb_3CIKJZbZZhESo67emmTxx3AZVfp5IpXwm6mJPseLdbKocz5y9gh7iEVZA), [2](https://www.google.com/goto?url=CAESjAEB6zswFTQRcKVuGaqp5j98KCjtP_jbImefZR_y44kC4DbcBO3LJe1qicrCaDxjJwprvKcG4qF-pMxJMC6tc2tzsOCUBXaXxvIGqIq7MLfUikkGXk7QjN1FAKZyNduuqR7HmVcdB1mQV5clJsFb2troud28MaMdyXB49EHcWJViOHUTngoBdIkab689lw)]\n\nWould you like to know how to query the Common Crawl index for a specific URL, or how to block CCBot using a `robots.txt` file?\nCommon Crawl\nCommon Crawl - Open Repository of Web Crawl Data\nOrganization: Common Crawl (501(c)(3) non-profit founded 2007). Corpus Statistics: Over 300 billion web pages spanning 19 years; adds 3 to 5 billion new pages m...\nWikipedia\nCommon Crawl - Wikipedia\nOrganization: Common Crawl Foundation (501(c)(3) non-profit, founded 2007 by Gil Elbaz, San Francisco/Los Angeles). Operations: Crawls the web, provides free pu...\nCommon Crawl\nAbout\nOverview Common Crawl is a nonprofit 501(c)(3) organisation that crawls the web and freely provides its archives and datasets to the public. Founded in 2007 by ...\nThe Atlantic\nCommon Crawl Is Doing the AI Industry's Dirty Work - The Atlantic\nEditor's note: This work is part of AI Watchdog, The Atlantic's ongoing investigation into the generative-AI industry. * The Common Crawl Foundation is little k...\nRegistry of Open Data on AWS\nCommon Crawl\nResources on AWS Description Crawl data (WARC and ARC format) Resource type S3 Bucket Account Required Amazon Resource Name (ARN) arn:aws:s3:::commoncrawl AWS R...\nLinkedIn\nCommon Crawl Foundation | LinkedIn\nThe Common Crawl Foundation is a California 501(c)(3) registered non-profit founded by Gil Elbaz with the goal of democratizing access to web information by pro...\nDEV Community\nInside Common Crawl: The Dataset Behind AI Models (and Its Real ...\nWhat is Common Crawl? Common Crawl is a non profit organization that has been crawling the web since 2008. Its mission is to provide free, large scale, publicly...\nYouTube·PyTorch\n14m\nHarnessing Common Crawl for AI and ML Applications - Pedro Ortiz Suarez ...\nYouTube·James Dooley\n6m\nCommon Crawl for AI Visibility Explained (James Dooley ...\nYouTube·Extract Summit\n2m\nExploring Common Crawl: The Web's Open Archive | Extract Data Live\nInfluenceWatch\nCommon Crawl - Influence Watch\nCommon Crawl is a nonprofit which maintains an open repository of “crawled” internet data. The group makes the information which it crawls from the internet fre...","transcript_class":"CAPTURE-TIME VERBATIM RECORD — paste of the Overview expanded, with its source cards","transcript_complete":"complete as supplied","transcript_raw":"AI Mode Conversation\nYou said: Common CrawlCommon Crawl\nCommon Crawl is a 501(c)(3) non-profit organization founded in 2007 by Gil Elbaz that collects, preserves, and freely shares an open archive of internet data. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\nCore Details & Scale\n\n* Mission: To democratize access to web information for researchers, educators, and developers. [[1](https://www.google.com/goto?url=CAESZQHrOzAVMfEXxr0oNp6H8FoT5bN7m6YJoZoBYr914b601JI6UdQmZ6P4yvzngICxjHnJfK6Yec_P98GgmresQ7Dw3AEs6T3A53CVzDKKfWjtlybm3btrazlt2DvPmN7I_E8cU24E), [2](https://www.google.com/goto?url=CAESogEB6zswFRmw2uEC-2GocWte7CsiyCs5IzDqfmZ1vdjn4TuEvvrmv-9rZxi_iD2YDoiCnAHiAfWsTcVSApUtv2ZAUIucufgiwuJGJY47kvQxBVjxUvzdPPR_X6-hqmRCpQqFfF5lSkrZSydExsRIqMlq3dCOghVx3NcdWCi1VKpIFPaJLSxY20-ZbH2N-BMoxDdLLfknca_PaWgJHXj6vNR6kys)]\n* Archive Size: Contains over 10 to 11 petabytes of data spanning nearly two decades. [[1](https://www.google.com/goto?url=CAESaAHrOzAV6hSai_sUbgLZIrWUvd_1aLDcTFYfwudvpzAjt7Wiae0fyBsSxrYkAKjsdl6ySb6uy_tpA5v5xXShnpfXqAwWsY_H27rp_Y8cU2cMh3E4wmWYqXwnZGqApDT6GBOEet3F7Ihr), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\n* Frequency: Adds roughly 3 to 5 billion new web pages each month. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI)]\n* Hosting: Stored for free on Amazon Web Services (AWS) via its Open Data Sponsorship Program (`s3://commoncrawl`). [[1](https://www.google.com/goto?url=CAESYgHrOzAV-kPJYYR5DzaDn3shoeQ65CeWL2DX80Q1HiWI-QCqFSyWcaVR4yjmL1DgZbAHeuuve3n-HHc5JBWTOagT1duzWywT40VHf0GKIvrLDLkOkavvEFO_V_IGtljJ-oDK), [2](https://www.google.com/goto?url=CAESVQHrOzAVqszOLx-E43yD5wA0Dv46rmey4B9TGrMxZvCFJeMjGP83E07JDMC3YfOGdDestAm4Ibx47oOz7gt6KYZnYFMt1HlDzrY5rQVzJC3UFZSsuuc)]\n\nData Formats\nCommon Crawl distributes its monthly crawls in three primary file formats:\n\n* WARC (Web Archive): Raw HTTP responses, including full HTML content and headers. [[1](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj), [2](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg)]\n* WET (Web Extracted Text): Cleaned plain-text content with HTML and code stripped away. [[1](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg), [2](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj)]\n* WAT (Web Archive Transformations): Metadata summaries in JSON format containing link and header details. [[1](https://www.google.com/goto?url=CAESaAHrOzAVuWJzHK_NhVFInACmMHCfBZxBciAC18-xAa4BA2NZRB0ZSgRprcAXL4rPUNXfKBFcs0m-mayAR6JbwfqANVQiK1135DYh_BvnAT1UDbO0hQgfcW8DJ7pVMrufkwqEfoWLWtkj), [2](https://www.google.com/goto?url=CAESaQHrOzAVAZxP3VM22PTIiAdm7yMs9JmJD6Hr_DmNWge_rSKIZ7ihyM9lTenxKVIx9PALbg6KUy0rFAhjY-IKl2DrwZs_WSeL2RHifctFg3YRBlx9RwinZZGOyKCrAb4zW8sPzcM9G6D_yg)]\n\nUse Cases & Controversies\n\n* AI Training: The dataset serves as a foundational training corpus for many modern large language models (LLMs) developed by companies like OpenAI, Anthropic, Google, and Meta. [[1](https://www.google.com/goto?url=CAESYgHrOzAVFRbye9kH3j9k6KLcvf-LWQvdPj7bt9r96H-e8E84FwHmg_yiMqdphgTRqZvUXhz98sAB-E5d3HUBV9bOkMOJJ3nBI88q_RRtc7hn_NcnELXmzeudkN_54USqck17), [2](https://www.google.com/goto?url=CAESjAEB6zswFTQRcKVuGaqp5j98KCjtP_jbImefZR_y44kC4DbcBO3LJe1qicrCaDxjJwprvKcG4qF-pMxJMC6tc2tzsOCUBXaXxvIGqIq7MLfUikkGXk7QjN1FAKZyNduuqR7HmVcdB1mQV5clJsFb2troud28MaMdyXB49EHcWJViOHUTngoBdIkab689lw)]\n* Research: Cited in over 10,000 academic and technical research papers. [[1](https://www.google.com/goto?url=CAESUAHrOzAV-zEK7tnOtwWqzfve6OyBbYyBKzpRyoVOz0ct3H8LxLJiN7L6d_a2pZHAmOI399czkFqoQToSnPHzO4phi_UaHeOC8ubRIRb7CckI)]\n* Web Scraping & Paywalls: Because its scraper (`CCBot`) does not execute dynamic browser code or login scripts, it has faced criticism and pushback from news publishers and media organizations over copyright and paywall bypass concerns. [[1](https://www.google.com/goto?url=CAESbwHrOzAVeonNGGhs8vJ1yho5hdVB9fn-HN5yv195f0il9o3uwribREP-IVzKxaxhDEoEFbe7y21-p-1eSNDwcIKeD0Mb_3CIKJZbZZhESo67emmTxx3AZVfp5IpXwm6mJPseLdbKocz5y9gh7iEVZA), [2](https://www.google.com/goto?url=CAESjAEB6zswFTQRcKVuGaqp5j98KCjtP_jbImefZR_y44kC4DbcBO3LJe1qicrCaDxjJwprvKcG4qF-pMxJMC6tc2tzsOCUBXaXxvIGqIq7MLfUikkGXk7QjN1FAKZyNduuqR7HmVcdB1mQV5clJsFb2troud28MaMdyXB49EHcWJViOHUTngoBdIkab689lw)]\n\nWould you like to know how to query the Common Crawl index for a specific URL, or how to block CCBot using a `robots.txt` file?\nCommon Crawl\nCommon Crawl - Open Repository of Web Crawl Data\nOrganization: Common Crawl (501(c)(3) non-profit founded 2007). Corpus Statistics: Over 300 billion web pages spanning 19 years; adds 3 to 5 billion new pages m...\nWikipedia\nCommon Crawl - Wikipedia\nOrganization: Common Crawl Foundation (501(c)(3) non-profit, founded 2007 by Gil Elbaz, San Francisco/Los Angeles). Operations: Crawls the web, provides free pu...\nCommon Crawl\nAbout\nOverview Common Crawl is a nonprofit 501(c)(3) organisation that crawls the web and freely provides its archives and datasets to the public. Founded in 2007 by ...\nThe Atlantic\nCommon Crawl Is Doing the AI Industry's Dirty Work - The Atlantic\nEditor's note: This work is part of AI Watchdog, The Atlantic's ongoing investigation into the generative-AI industry. * The Common Crawl Foundation is little k...\nRegistry of Open Data on AWS\nCommon Crawl\nResources on AWS Description Crawl data (WARC and ARC format) Resource type S3 Bucket Account Required Amazon Resource Name (ARN) arn:aws:s3:::commoncrawl AWS R...\nLinkedIn\nCommon Crawl Foundation | LinkedIn\nThe Common Crawl Foundation is a California 501(c)(3) registered non-profit founded by Gil Elbaz with the goal of democratizing access to web information by pro...\nDEV Community\nInside Common Crawl: The Dataset Behind AI Models (and Its Real ...\nWhat is Common Crawl? Common Crawl is a non profit organization that has been crawling the web since 2008. Its mission is to provide free, large scale, publicly...\nYouTube·PyTorch\n14m\nHarnessing Common Crawl for AI and ML Applications - Pedro Ortiz Suarez ...\nYouTube·James Dooley\n6m\nCommon Crawl for AI Visibility Explained (James Dooley ...\nYouTube·Extract Summit\n2m\nExploring Common Crawl: The Web's Open Archive | Extract Data Live\nInfluenceWatch\nCommon Crawl - Influence Watch\nCommon Crawl is a nonprofit which maintains an open repository of “crawled” internet data. The group makes the information which it crawls from the internet fre...\n","transcript_read":"READ IN FULL 2026-11-01","turns":1},"slug":"common-crawl-aio-20261101"}