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Learn Hadoop and get a paper published

Learn Hadoop and get a paper published

We're looking for students who want to try out the Apache Hadoop platform and get a technical report published.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
Data 2.0 Summit

Data 2.0 Summit

Next week a few members of the Common Crawl team are going the Data 2.0 Summit in San Francisco.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Common Crawl's Advisory Board

Common Crawl's Advisory Board

As part of our ongoing effort to grow Common Crawl into a truly useful and innovative tool, we recently formed an Advisory Board to guide us in our efforts. We have a stellar line-up of advisory board members who will lend their passion and expertise in numerous fields as we grow our vision.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
Common Crawl on AWS Public Data Sets

Common Crawl on AWS Public Data Sets

Common Crawl is thrilled to announce that our data is now hosted on Amazon Web Services' Public Data Sets.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Web Data Commons

Web Data Commons

For the last few months, we have been talking with Chris Bizer and Hannes Mühleisen at the Freie Universität Berlin about their work and we have been greatly looking forward the announcement of the Web Data Commons.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
SlideShare: Building a Scalable Web Crawler with Hadoop

SlideShare: Building a Scalable Web Crawler with Hadoop

Common Crawl on building an open Web-Scale crawl using Hadoop.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Video: Gil Elbaz at Web 2.0 Summit 2011

Video: Gil Elbaz at Web 2.0 Summit 2011

Hear Common Crawl founder discuss how data accessibility is crucial to increasing rates of innovation as well as give ideas on how to facilitate increased access to data.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Video: This Week in Startups - Gil Elbaz and Nova Spivack

Video: This Week in Startups - Gil Elbaz and Nova Spivack

Nova and Gil, in discussion with host Jason Calacanis, explore in depth what Common Crawl is all about and how it fits into the larger picture of online search and indexing.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Video Tutorial: MapReduce for the Masses

Video Tutorial: MapReduce for the Masses

Learn how you can harness the power of MapReduce data analysis against the Common Crawl dataset with nothing more than five minutes of your time, a bit of local configuration, and 25 cents.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Common Crawl Enters A New Phase

Common Crawl Enters A New Phase

A little under four years ago, Gil Elbaz formed the Common Crawl Foundation. He was driven by a desire to ensure a truly open web. He knew that decreasing storage and bandwidth costs, along with the increasing ease of crunching big data, made building and maintaining an open repository of web crawl data feasible.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Gil Elbaz and Nova Spivack on This Week in Startups

Gil Elbaz and Nova Spivack on This Week in Startups

Nova and Gil, in discussion with host Jason Calacanis, explore in depth what Common Crawl is all about and how it fits into the larger picture of online search and indexing. Underlying their conversation is an exploration of how Common Crawl's open crawl of the web is a powerful asset for educators, researchers, and entrepreneurs.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
MapReduce for the Masses: Zero to Hadoop in Five Minutes with Common Crawl

MapReduce for the Masses: Zero to Hadoop in Five Minutes with Common Crawl

Common Crawl aims to change the big data game with our repository of over 40 terabytes of high-quality web crawl information into the Amazon cloud, the net total of 5 billion crawled pages.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Answers to Recent Community Questions

Answers to Recent Community Questions

In this post we respond to the most common questions. Thanks for all the support and please keep the questions coming!
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Common Crawl Discussion List

Common Crawl Discussion List

We have started a Common Crawl discussion list to enable discussions and encourage collaboration between the community of coders, hackers, data scientists, developers and organizations interested in working with open web crawl data.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.

Common Crawl Blog

Host- and Domain-Level Web Graphs November/December 2023, February/March 2024, and April 2024

May 5, 2024

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of November, February, April 2024.

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April 2024 Crawl Archive Now Available

May 1, 2024

We are pleased to announce that the crawl archive for April 2024 is now available. The data was crawled between April 12th and April 25th, and contains 2.7 billion web pages (or 386 TiB of uncompressed content). Page captures are from 47.24 million hosts or 37.65 million registered domains and include 0.98 billion new URLs not visited in any of our prior crawls.

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March/April 2024 Newsletter

March 26, 2024

We're excited to share an update on some of our recent projects and initiatives in this newsletter!

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Host- and Domain-Level Web Graphs September/October, November/December 2023 and February/March 2024

March 14, 2024

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of September, November, February 2023-24.

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February/March 2024 Crawl Archive Now Available

March 11, 2024

The crawl archive for February/March 2024 is now available. The data was crawled between February 20th and March 5th, and contains 3.16 billion web pages (or 424.7 TiB of uncompressed content).

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Web Archiving File Formats Explained

March 1, 2024

In the ever–evolving landscape of digital archiving and data analysis, it is helpful to understand the various file formats used for web crawling. From the early ARC format to the more advanced WARC, and the specialised WET and WAT files, each plays an important role in the field of web archiving. In this post, we explain these formats, exploring their unique features, applications, and the enhancements they offer.

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A Further Look Into the Prevalence of Various ML Opt–Out Protocols

February 22, 2024

This post details some experiments that we have done regarding Machine Learning Opt–Out protocols. We decided to investigate the prevalence of some of these protocols, by taking a deeper look at our WARC files, and finding which proportions of domains are using which opt–out protocols.

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Balancing Discovery and Privacy: A Look Into Opt–Out Protocols

February 13, 2024

What opt–out protocols are, their importance, how you can use them, how we respect them, and what the emerging initiatives are that surround them.

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Host- and Domain-Level Web Graphs May/Sep/Nov 2023

December 22, 2023

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of May, September, and November of 2023.

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November/December 2023 Crawl Archive Now Available

December 15, 2023

The crawl archive for November/December 2023 is now available. The data was crawled between November 28th and December 12th, and contains 3.35 billion web pages (or 454 TiB of uncompressed content).

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Oct/Nov 2023 Performance Issues

November 15, 2023

Our datasets have become very popular over time, with downloads doubling every 6 months for several years in a row. This post details some steps to take if you are impacted by performance issues.

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Host- and Domain-Level Web Graphs Mar/May/Oct 2023

October 18, 2023

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of March, May, and October 2023. The host-level graph consists of 378.7 million nodes and 2.6 billion edges, and the domain-level graph has 94.2 million nodes and 1.7 billion edges.

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September/October 2023 crawl archive now available

October 12, 2023

The crawl archive for September/October 2023 is now available! The data was crawled Sept 21 – October 5 and contains 3.4 billion web pages or 456 TiB of uncompressed content.

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Bridging Digital Exploration and Scientific Frontiers

October 10, 2023

This month Common Crawl Foundation members had the privilege of attending 5th International Open Search Symposium at CERN in Geneva, Switzerland.

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May/June 2023 crawl archive now available

June 21, 2023

The crawl archive for May/June 2023 is now available! The data was crawled May 27 – June 11 and contains 3.1 billion web pages or 390 TiB of uncompressed content. Page captures are from 44 million hosts or 35 million registered domains and include 1.0 billion new URLs, not visited in any of our prior crawls.

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March/April 2023 crawl archive now available

April 6, 2023

The crawl archive for March/April 2023 is now available! The data was crawled March 20 – April 2 and contains 3.1 billion web pages or 400 TiB of uncompressed content. Page captures are from 43 million hosts or 34 million registered domains and include 1.2 billion new URLs, not visited in any of our prior crawls.

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Host- and Domain-Level Web Graphs September/October, November/December 2022 and January/February 2023

March 15, 2023

We are pleased to announce a new release of host-level and domain-level web graphs based on the September/October, November/December 2022 and January/February 2023 crawls. For more information about the data formats and the processing pipeline, please see the announcements of previous webgraph releases.

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January/February 2023 crawl archive now available

February 16, 2023

The crawl archive for January/February 2023 is now available! The data was crawled January 26 – February 9 and contains 3.15 billion web pages or 400 TiB of uncompressed content. Page captures are from 40 million hosts or 33 million registered domains and include 1.3 billion new URLs, not visited in any of our prior crawls.

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November/December 2022 crawl archive now available

December 14, 2022

The crawl archive for November/December 2022 is now available! The data was crawled November 26 – December 10 and contains 3.35 billion web pages or 420 TiB of uncompressed content. Page captures are from 44 million hosts or 34 million registered domains and include 1.2 billion new URLs, not visited in any of our prior crawls.

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September/October 2022 crawl archive now available

October 11, 2022

The crawl archive for September/October 2022 is now available! The data was crawled September 24 – October 8 and contains 3.15 billion web pages or 380 TiB of uncompressed content. Page captures are from 44 million hosts or 34 million registered domains and include 1.3 billion new URLs, not visited in any of our prior crawls. This crawl includes improvements made in extracting clean text in WET files and WAT anchor texts.

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Host- and Domain-Level Web Graphs May, June/July and August 2022

September 23, 2022

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of May, June/July and August 2022. Additional information about the data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases.

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August 2022 crawl archive now available

August 22, 2022

The crawl archive for August 2022 is now available! The data was crawled August 7 – 20 and contains 2.55 billion web pages or 295 TiB of uncompressed content. Page captures are from 46 million hosts or 37 million registered domains and include 1.3 billion new URLs, not visited in any of our prior crawls.

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June/July 2022 crawl archive now available

July 13, 2022

The crawl archive for June/July 2022 is now available! The data was crawled June 24 – July 7 and contains 3.1 billion web pages or 370 TiB of uncompressed content. Page captures are from 44 million hosts or 35 million registered domains and include 1.4 billion new URLs, not visited in any of our prior crawls.

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May 2022 crawl archive now available

June 2, 2022

The crawl archive for May 2022 is now available! The data was crawled May 16 – 29 and contains 3.45 billion web pages or 420 TiB of uncompressed content. Page captures are from 45 million hosts or 36 million registered domains and include 1.4 billion new URLs, not visited in any of our prior crawls.

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Host- and Domain-Level Web Graphs October, November/December 2021 and January 2022

March 16, 2022

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of October, November/December 2021 and January 2022. Additional information about the data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases.

Read More...