Common Crawl Blog

The latest news, interviews, technologies, and resources.

Filter by Category or Search by Title

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Analysis of the NCSU Library URLs in the Common Crawl Index

Analysis of the NCSU Library URLs in the Common Crawl Index

Last week we announced the Common Crawl URL Index. The index has already proven useful to many people and we would like to share an interesting use of the index that was very well described in a great blog post by Jason Ronallo.
Jason Ronallo
Jason is Head of Digital Library Initiatives at North Carolina State University Libraries.
The Norvig Web Data Science Award

The Norvig Web Data Science Award

We are very excited to announce the Norvig Web Data Science Award! Common Crawl and SARA created the award to encourage research in web data science.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
The Winners of The Norvig Web Data Science Award

The Winners of The Norvig Web Data Science Award

We are very excited to announce that the winners of the Norvig Web Data Science Award Lesley Wevers, Oliver Jundt, and Wanno Drijfhout from the University of Twente!
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 URL Index

Common Crawl URL Index

We are thrilled to announce that Common Crawl now has a URL index! Scott Robertson, founder of triv.io graciously donated his time and skills to creating this valuable tool.
Scott Robertson
Scott Robertson is a founder of triv.io, and is a passionate believer in simplifying complicated processes.
Towards Social Discovery - New Content Models; New Data; New Toolsets

Towards Social Discovery - New Content Models; New Data; New Toolsets

This is a guest blog post by Matthew Berk, Founder of Lucky Oyster. Matthew has been on the front lines of search technology for the past decade.
Matthew Berk
Matthew Berk is a founder at Bean Box and Open List, worked at Jupiter Research and Marchex. Matthew studied at Cornell University and Johns Hopkins University.
blekko donates search data to Common Crawl

blekko donates search data to Common Crawl

We are very excited to announce that blekko is donating search data to Common Crawl! Founded in 2007, blekko has created a new type of search experience that enlists human editors in its efforts to eliminate spam and personalize search.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Winners of the Code Contest!

Winners of the Code Contest!

We’re very excited to announce the winners of the First Ever Common Crawl Code Contest! We were thrilled by the response to the contest and the many great entries. Several people let us know that they were not able to complete their project in time to submit to the contest. We’re currently working with them to finish the projects outside of the contest and we’ll be showcasing some of those projects in the near future!
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
Common Crawl Code Contest Extended Through the Holiday Weekend

Common Crawl Code Contest Extended Through the Holiday Weekend

Do you have a project that you are working on for the Common Crawl Code Contest that is not quite ready? If so, you are not the only one. A few people have emailed us to let us know their code is almost ready but they are worried about the deadline, so we have decided to extend the deadline through the holiday weekend.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
TalentBin Adds Prizes To The Code Contest

TalentBin Adds Prizes To The Code Contest

The prize package for the Common Crawl Code Contest now includes three Nexus 7 tablets thanks to TalentBin!
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
2012 Crawl Data Now Available

2012 Crawl Data Now Available

I am very happy to announce that Common Crawl has released 2012 crawl data as well as a number of significant enhancements to our example library and help pages.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Amazon Web Services sponsoring $50 in credit to all contest entrants!

Amazon Web Services sponsoring $50 in credit to all contest entrants!

Did you know that every entry to the First Ever Common Crawl Code Contest gets $50 in Amazon Web Services (AWS) credits? If you're a developer interested in big datasets and learning new platforms like Hadoop, you truly have no reason not to try your hand at creating an entry to the code contest!
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
Mat Kelcey Joins The Common Crawl Advisory Board

Mat Kelcey Joins The Common Crawl Advisory Board

We are excited to announce that Mat Kelcey has joined the Common Crawl Board of Advisors! Mat has been extremely helpful to Common Crawl over the last several months and we are very happy to have him as an official Advisor to the organization.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Still time to participate in the Common Crawl code contest

Still time to participate in the Common Crawl code contest

There is still plenty of time left to participate in the Common Crawl code contest! The contest is accepting entries until August 30th, why not spend some time this week playing around with the Common Crawl corpus and then submit your work to the contest?
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Big Data Week: meetups in SF and around the world

Big Data Week: meetups in SF and around the world

Big Data Week aims to connect data enthusiasts, technologists, and professionals across the globe through a series of meet-ups. The idea is to build community among groups working on big data and to spur conversations about relevant topics ranging from technology to commercial use cases.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
OSCON 2012

OSCON 2012

We're just one month away from one of the biggest and most exciting events of the year, O'Reilly's Open Source Convention (OSCON). This year's conference will be held July 16th-20th in Portland, Oregon.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
The Open Cloud Consortium’s Open Science Data Cloud

The Open Cloud Consortium’s Open Science Data Cloud

Common Crawl has started talking with the Open Cloud Consortium (OCC) about working together. If you haven’t already heard of the OCC, it is an awesome nonprofit organization managing and operating cloud computing infrastructure that supports scientific, environmental, medical and health care research.
Common Crawl Foundation
Common Crawl builds and maintains an open repository of web crawl data that can be accessed and analyzed by anyone.
Twelve steps to running your Ruby code across five billion web pages

Twelve steps to running your Ruby code across five billion web pages

The following is a guest blog post by Pete Warden, a member of the Common Crawl Advisory Board. Pete is a British-born programmer living in San Francisco. After spending over a decade as a software engineer, including 5 years at Apple, he’s now focused on a career as a mad scientist.
Pete Warden
Pete is a British-born programmer living in San Francisco, and is a member of the Common Crawl advisory board.
Common Crawl's Brand Spanking New Video and First Ever Code Contest!

Common Crawl's Brand Spanking New Video and First Ever Code Contest!

At Common Crawl we've been busy recently! After announcing the release of 2012 data and other enhancements, we are now excited to share with you this short video that explains why we here at Common Crawl are working hard to bring web crawl data to anyone who wants to use it.
Allison Domicone
Allison Domicone was formerly a Program and Policy Consultant to Common Crawl and previously worked for Creative Commons.
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

June 2016 Crawl Archive Now Available

July 14, 2016

The crawl archive for June 2016 is now available! The archive contains more than 1.23 billion web pages.

Read More...

May 2016 Crawl Archive Now Available

June 19, 2016

The crawl archive for May 2016 is now available! More than 1.46 billion web pages are in the archive.

Read More...

April 2016 Crawl Archive Now Available

May 24, 2016

The crawl archive for April 2016 is now available! More than 1.33 billion webpages are in the archive.

Read More...

Welcome, Sebastian!

May 13, 2016

It is a pleasure to officially announce that Sebastian Nagel joined Common Crawl as Crawl Engineer in April. Sebastian brings to Common Crawl a unique blend of experience, skills, knowledge (and enthusiasm!) to complement his role and the organization.

Read More...

February 2016 Crawl Archive Now Available

February 29, 2016

As an interim crawl engineer for CommonCrawl, I am pleased to announce that the crawl archive for February 2016 is now available! This crawl archive holds more than 1.73 billion urls.

Read More...

November 2015 Crawl Archive Now Available

December 18, 2015

As an interim crawl engineer for CommonCrawl, I am pleased to announce that the crawl archive for November 2015 is now available! This crawl archive is over 151TB in size and holds more than 1.82 billion urls.

Read More...

September 2015 Crawl Archive Now Available

November 16, 2015

As an interim crawl engineer for CommonCrawl, I am pleased to announce that the crawl archive for September 2015 is now available! This crawl archive is over 106TB in size and holds more than 1.32 billion urls.

Read More...

August 2015 Crawl Archive Available

October 10, 2015

The crawl archive for August 2015 is now available! This crawl archive is over 149TB in size and holds more than 1.84 billion webpages.

Read More...

Web Image Size Prediction for Efficient Focused Image Crawling

August 20, 2015

This is a guest blog post by Katerina Andreadou, a research assistant at CERTH, specializing in multimedia analysis and web crawling. In the context of using Web image content for analysis and retrieval, it is typically necessary to perform large-scale image crawling. In our web image crawler setup, we noticed that a serious bottleneck pertains to the fetching of image content, since for each web page a large number of HTTP requests need to be issued to download all included image elements.

Read More...

July 2015 Crawl Archive Available

August 15, 2015

The crawl archive for June 2015 is now available! This crawl archive is over 145TB in size and holds more than 1.81 billion webpages.

Read More...

June 2015 Crawl Archive Available

July 23, 2015

The crawl archive for June 2015 is now available! This crawl archive is over 131TB in size and holds more than 1.67 billion webpages.

Read More...

May 2015 Crawl Archive Available

July 8, 2015

The crawl archive for May 2015 is now available! This crawl archive is over 159TB in size and holds more than 2.05 billion webpages.

Read More...

April 2015 Crawl Archive Available

May 28, 2015

The crawl archive for April 2015 is now available! This crawl archive is over 168TB in size and holds more than 2.11 billion webpages.

Read More...

March 2015 Crawl Archive Available

May 20, 2015

The crawl archive for March 2015 is now available! This crawl archive is over 124TB in size and holds more than 1.64 billion webpages.

Read More...

Announcing the Common Crawl Index!

April 8, 2015

This is a guest post by Ilya Kreymer, a dedicated volunteer who has gifted large amounts of time, effort and talent to Common Crawl. He previously worked at the Internet Archive and led the Wayback Machine development, which included building large indexes of WARC files.

Read More...

Evaluating graph computation systems

April 1, 2015

This is a guest blog post by Frank McSherry, a computer science researcher active in the area of large scale data analysis. While at Microsoft Research he co-invented differential privacy, and lead the Naiad streaming dataflow project. His current interests involve understanding and improving performance in scalable data processing systems.

Read More...

February 2015 Crawl Archive Available

March 31, 2015

The crawl archive for February 2015 is now available! This crawl archive is over 145TB in size and over 1.9 billion webpages.

Read More...

5 Good Reads in Big Open Data: March 26 2015

March 26, 2015

Analyzing the Web For the Price of a Sandwich - via Yelp Engineering Blog: a Common Crawl use case from the December 2014 Dataset finds 748 million US phone numbers “I wanted to explore the Common Crawl in more depth, so I came up with a (somewhat contrived) use case of helping consumers find the web pages for local businesses…”

Read More...

5 Good Reads in Big Open Data: March 20 2015

March 20, 2015

Startup Orbital Insight uses deep learning and finds financially useful information in aerial imagery - via MIT Technology Review: “To predict retail sales based on retailers’ parking lots, humans at Orbital Insights use Google Street View images to pinpoint the exact location of the stores’ entrances. Satellite imagery is acquired from a number of commercial suppliers, some of it refreshed daily. Software then monitors the density of cars and the frequency with which they enter the lots.”

Read More...

5 Good Reads in Big Open Data: March 13 2015

March 13, 2015

Jürgen Schmidhuber- Ask Me Anything - via Reddit:  Jürgen has pioneered self-improving general problem solvers and Deep Learning Neural Networks for decades. He is the recipient of the 2013 Helmholtz Award of the International Neural Networks Society.

Read More...

5 Good Reads in Big Open Data: March 6 2015

March 6, 2015

2015: What do you think about Machines that think? - via Edge: A.I isn't so artificial “With these kind of software challenges, and given the very real technology-driven threats to our species already at hand, why worry about malevolent A.I.? For decades to come, at least, we are clearly more threatened by like trans-species plagues, extreme resource depletion, global warming, and nuclear warfare…”

Read More...

January 2015 Crawl Archive Available

March 4, 2015

The crawl archive for January 2015 is now available! This crawl archive is over 139TB in size and contains 1.82 billion webpages.

Read More...

5 Good Reads in Big Open Data: February 27 2015

February 27, 2015

Hadoop is the Glue for Big Data - via StreetWise Journal: Startups trying to build a successful big data infrastructure should "welcome...and be protective" of open source software like Hadoop. The future and innovation of Big Data depends on it.

Read More...

Analyzing a Web graph with 129 billion edges using FlashGraph

February 25, 2015

This is a guest blog post by Da Zheng, the architect and main developer of the FlashGraph project. He is a PhD student of computer science at Johns Hopkins University, focusing on developing frameworks for large-scale data analysis, particularly for massive graph analysis and data mining.

Read More...

5 Good Reads in Big Open Data: Feb 20 2015

February 20, 2015

A thriving ecosystem is the key for real viability of any technology. With lots of eyes on the prize, the technology becomes more stable, offers more capabilities, and importantly, supports greater interoperability across technologies, making it easier to adopt and use, in a shorter amount of time. By creating a formal organization, the Open Data Platform will act as a forcing function to accelerate the maturation of an ecosystem around Big Data.

Read More...