August 2017 Crawl Archive Now Available

The crawl archive for August 2017 is now available! The archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2017-34/. It contains 3.28 billion+ web pages and over 280 TiB of uncompressed content.

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To improve coverage and freshness we used the top 50 million ranked hosts from the May/June/July 2017 webgraph data set and added over 800 million new URLs (not contained in any crawl archive before), of which

• 300 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;
• 525 million URLs are a random sample extracted from sitemaps (if provided by any of the top 50 million hosts).

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The following improvements affect the WAT and WET extraction:

• improved spacing / word segmentation in WET extracts, see issue #13
• extract URLs from JavaScript code in onClick attributes (issue #8)

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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-2017-34/. 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.

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