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July 4, 2017

June 2017 Crawl Archive Now Available

Note: this post has been marked as obsolete.
The crawl archive for June 2017 is now available! The archive contains 3.16 billion+ web pages and over 260 TiB of uncompressed content.
Sebastian Nagel
Sebastian Nagel
Sebastian is a Distinguished Engineer with Common Crawl.

The crawl archive for June 2017 is now available! The archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2017-26/. It contains 3.16 billion+ web pages and over 260 TiB of uncompressed content.

Data Type File List #Files Total Size
Compressed (TiB)
Segments segment.paths.gz 100
WARC warc.paths.gz 71839 63.33
WAT wat.paths.gz 71840 21.06
WET wet.paths.gz 71839 9.44
Robots.txt files robotstxt.paths.gz 71840 0.13
Non-200 responses non200responses.paths.gz 71840 1.77
URL index files cc-index.paths.gz 302 0.24
Columnar URL index files cc-index-table.paths.gz 900 0.27

To improve coverage and freshness we used the top 40 million ranked hosts from the Feb/Mar/Apr 2017 webgraph data set and added almost 800 million new URLs (not contained in any crawl archive before), of which:

  • 500 million URLs were found by a side crawl within a maximum of 3 links (“hops”) away from the home pages of the top 40 million hosts;
  • 300 million URLs are a random sample extracted from sitemaps (if provided by any of these 40 million hosts).

About 33% of the crawl archive's 3.16 billion URLs overlap with the preceding May 2017 crawl.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files. By simply adding either s3://commoncrawl/ or https://data.commoncrawl.org/ to each line, you end up with the S3 and HTTP paths respectively.

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2017-26/. For more information on working with the URL index, please refer to the previous blog post or the Index Server API. There is also a command-line tool client for common use cases of the URL index.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact info@commoncrawl.org for sponsorship information.

This release was authored by:
No items found.

Erratum: 

Erroneous title field in WAT records

Originally reported by: 
Robert Waksmunski
Permalink

The "Title" extracted in WAT records to the JSON path `Envelope > Payload-Metadata > HTTP-Response-Metadata > HTML-Metadata > Head > Title` is not the content included in the <title> element in the HTML header (<head> element) if the page contains further <title> elements in the page body. The content of the last <title> element is written to the WAT "Title". This bug was observed if the HTML page includes embedded SVG graphics.

The issue was reported by the user Robert Waksmunski:

...and was fixed for CC-MAIN-2024-42 by commoncrawl/ia-web-commons#37.

This erratum affects all crawls from CC-MAIN-2013-20 until CC-MAIN-2024-38.

Erratum: 

Missing Language Classification

Originally reported by: 
Permalink

Starting with crawl CC-MAIN-2018-39 we added a language classification field (‘content-languages’) to the columnar indexes, WAT files, and WARC metadata for all subsequent crawls. The CLD2 classifier was used, and includes up to three languages per document. We use the ISO-639-3 (three-character) language codes.