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Common Crawl

Common Crawl - Blog - Introducing the AI Visibility Audit Common Crawl - Blog - Host- and Domain-Level Web Graphs March, April, and May 2026 Common Crawl - Blog - May 2026 Crawl Archive Now Available Common Crawl - Blog - April 2026 Crawl Archive Now Available in a Hugging Face Storage Bucket Common Crawl - Blog - You can now build directly on Common Crawl from the browser Common Crawl - Blog - Host- and Domain-Level Web Graphs February, March, and April 2026 Common Crawl - Blog - April 2026 Crawl Archive Now Available Common Crawl - Blog - April 2026 Common Crawl Newsletter Common Crawl - Blog - Announcing a Change to Common Crawl Dataset Size Reporting Common Crawl - Blog - Host- and Domain-Level Web Graphs January, February, and March 2026 Common Crawl - Blog - March 2026 Crawl Archive Now Available Common Crawl - Blog - IPv6 Adoption Across the Top 100K Web Hosts Common Crawl - Blog - Web Graph Statistics Gets a Proper Upgrade Common Crawl - Blog - Measuring Web Accessibility from Crawl Archives Common Crawl - Blog - Announcing the Whirlwind Tour of Common Crawl's Datasets Using Java Common Crawl - Blog - Host- and Domain-Level Web Graphs December 2025 and January/February 2026 Common Crawl - Blog - Introducing the New Examples & Resources Browser Common Crawl - Blog - February 2026 Crawl Archive Now Available Common Crawl - Blog - AI Plumbers at FOSDEM’26 Common Crawl - Blog - CC-Citations: A Visualization of Research Papers Referencing Common Crawl Common Crawl - Blog - CommonLID: Re-evaluating State-of-the-Art Language Identification Performance on Web Data Common Crawl - Blog - Host- and Domain-Level Web Graphs November/December 2025 and January 2026 Common Crawl - Blog - January 2026 Crawl Archive Now Available Common Crawl - Blog - Web Archives for Social Sciences Datathon, Bristol Common Crawl - Blog - How SEOs Are Using Common Crawl's Web Graph Data for AI Ranking Signals Common Crawl - Blog - GneissWeb Annotations Examples Common Crawl - Blog - Common Crawl at the Mozilla Festival 2025 Common Crawl - Blog - Host- and Domain-Level Web Graphs October, November, December 2025 Common Crawl - Blog - December 2025 Crawl Archive Now Available Common Crawl - Blog - A Sampling of 2025 Research Referencing Common Crawl
Common Crawl - Blog - May/June 2025 Newsletter
2025-06-24 · via Common Crawl

Table of Contents

  • Common Crawl’s New Host Index
  • Refreshed Version of Our Whirlwind Tour
  • Upcoming Workshop on Multilingual Data Quality Signals
  • Event Updates

Common Crawl’s New Host Index

In April, we introduced the Host Index, a new dataset with one row per web host per crawl, combining crawl stats, status codes, languages, and bot defence data. It is queryable via AWS tools or downloadable.  For more details about the public test of this dataset and how to give feedback, see our blog post.

Refreshed Version of Our Whirlwind Tour

Recently we refreshed our Whirlwind Tour in Python, a brief tutorial on interacting with our datasets programmatically.  Read more about the updates in our blog post, and give it a whirl yourself in the GitHub repository.

Upcoming Workshop on Multilingual Data Quality Signals

WMDQS Logo

WMDQS Logo

The first Workshop on Multilingual Data Quality Signals (WMDQS), hosted by Common Crawl with MLCommons, EleutherAI, and Johns Hopkins University, will be held alongside COLM 2025 on the 10th of October 2025 in Montreal, Canada. It invites research papers on multilingual data quality and offers a shared task on language identification for web text.  Please note that the deadline for paper submissions has been extended to July 3, 2025 AoE.  More details on the research paper submissions and the shared task can be found on our blog post.  

Event Updates

We have been busy attending events this Spring and Summer.  In April we attended the IIPC General Assembly and Web Archiving Conference in Oslo, hosted by the National Library of Norway, where we delivered a range of contributions, including poster presentations, lightning talks, and a workshop.  More details and links to the presentations can be found in our blog post.

Also in April, we participated in the Creative Commons Technical Meeting in Berlin, Germany, with the title "From Human Content to Machine Data" on "Using Collective Action to Develop a New Social Contract for Machine Reuse", where we discussed practicalities of opt-ins and opt-outs.

In May we attended IBM Think in Boston, where we engaged with the AI Alliance through a series of executive events, including a roundtable and dinner with leaders from across industry, academia, and research. We had in-depth discussions with IBM, and were invited to present at IBM research centre in Yorktown Heights.

Conversations also covered shared interests in AI safety, digital preservation, and large-scale open data, including a lunch with the Frontier Model Forum and a meeting with the team behind a forthcoming open digital library initiative.

The visit concluded with meetings in Washington, DC, furthering Common Crawl’s engagement with policy and research communities.

In early June, we attended the Digital Preservation Coalition (DPC) Members Forum and Networking Event - Europe at the National Library of the Netherlands in The Hague.  At this event, we had productive conversations with peers from CERN, the Flickr Foundation, and the National Library of the Netherlands. We also engaged in unconference-style discussions on topics such as low-tech preservation.

Left-to-right: Sebastian Nagel, Pedro Ortiz Suarez, and Thom Vaughan, at the United Nations, New York City, June 2025

Later in June, much of the Common Crawl team was in New York for UN Open Source Week, where we co-hosted an event with the AI Alliance and BrightQuery at IBM’s One Madison offices. We were also invited to give a presentation at IBM’s Thomas J. Watson Research Center in Yorktown Heights.  Stay tuned for an upcoming blog post with further details.