Website review commoncrawl.org
Common Crawl - Open Repository of Web Crawl Data
Generated on March 04 2026 18:03 PM
Old data? UPDATE !
The score is 67/100
SEO Content
Title
Common Crawl - Open Repository of Web Crawl Data
Length : 48
Perfect, your title contains between 10 and 70 characters.
Description
We build and maintain an open repository of web crawl data that can be accessed and analyzed by anyone.
Length : 103
Great, your meta description contains between 70 and 160 characters.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| type | website |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 10 | 37 | 0 | 8 | 0 |
- [H1] Common Crawl maintains a free, open repository of web crawl data that can be used by anyone.
- [H2] Common Crawl is a 501(c)(3) non–profit founded in 2007.We make wholesale extraction, transformation and analysis of open web data accessible to researchers.
- [H2] Over 300 billion pages spanning 15 years.
- [H2] Free and open corpus since 2007.
- [H2] Cited in over 10,000 research papers.
- [H2] 3–5 billion new pages added each month.
- [H2] Measuring Web Accessibility from Crawl Archives
- [H2] The Data
- [H2] Resources
- [H2] Community
- [H2] About
- [H3] Featured Papers
- [H3] A geolocated dataset of German news articles
- [H3] Web Crawl Refusals: Insights From Common Crawl
- [H3] Banned Books: Analysis of Censorship on Amazon.com
- [H3] Harmony in the Australian Domain Space
- [H3] Hyperlink Hijacking: Exploiting Erroneous URL Links to Phantom Domains
- [H3] DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models
- [H3] esCorpius: A Massive Spanish Crawling Corpus
- [H3] BacklinkDB: A Purpose-Built Backlink Database Management System
- [H3] Latest Blog Post
- [H3] Overview
- [H3] CDXJ Index
- [H3] Columnar Index
- [H3] Web Graphs
- [H3] Latest Crawl
- [H3] Crawl Stats
- [H3] Graph Stats
- [H3] Errata
- [H3] Get Started
- [H3] AI Agent
- [H3] Blog
- [H3] Examples
- [H3] CCBot
- [H3] Infra Status
- [H3] Opt-Out Registry
- [H3] FAQ
- [H3] Research Papers
- [H3] Mailing List Archive
- [H3] Hugging Face
- [H3] Discord
- [H3] Collaborators
- [H3] Team
- [H3] Jobs
- [H3] Mission
- [H3] Impact
- [H3] Privacy Policy
- [H3] Terms of Use
- [H5] Lukas Kriesch, Sebastian Losacker
- [H5] Mostafa Ansar, Anna Sperotto, Ralph Holz
- [H5] Jeffrey Knockel, Jakub Dalek, Noura Aljizawi, Mohamed Ahmed, Levi Meletti, and Justin Lau
- [H5] Xian Gong, Paul X. McCarthy, Marian-Andrei Rizoiu, Paolo Boldi
- [H5] Kevin Saric, Felix Savins, Gowri Sankar Ramachandran, Raja Jurdak, Surya Nepal
- [H5] Zhihong Shao, Peiyi Wang, Qihao Zhu, Runxin Xu, Junxiao Song, Mingchuan Zhang, Y.K. Li, Y. Wu, Daya Guo
- [H5] Asier Gutiérrez-Fandiño, David Pérez-Fernández, Jordi Armengol-Estapé, David Griol, Zoraida Callejas
- [H5] Marius Løvold Jørgensen, UiT Norges Arktiske Universitet
Images
We found 7 images on this web page.
1 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 13%
This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 30 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Overview | Internal | Passing Juice |
| CDXJ Index | Internal | Passing Juice |
| Columnar Index | Internal | Passing Juice |
| Web Graphs | Internal | Passing Juice |
| Latest Crawl | Internal | Passing Juice |
| Crawl Stats | External | Passing Juice |
| Graph Stats | External | Passing Juice |
| Errata | Internal | Passing Juice |
| Get Started | Internal | Passing Juice |
| AI Agent | Internal | Passing Juice |
| Blog | Internal | Passing Juice |
| Examples | External | Passing Juice |
| CCBot | Internal | Passing Juice |
| Infra Status | Internal | Passing Juice |
| Opt-Out Registry | Internal | Passing Juice |
| FAQ | Internal | Passing Juice |
| Research Papers | Internal | Passing Juice |
| Mailing List Archive | External | Passing Juice |
| Hugging Face | External | Passing Juice |
| Discord | External | Passing Juice |
| Collaborators | Internal | Passing Juice |
| Team | Internal | Passing Juice |
| Jobs | Internal | Passing Juice |
| Mission | Internal | Passing Juice |
| Impact | Internal | Passing Juice |
| Privacy Policy | Internal | Passing Juice |
| Terms of Use | Internal | Passing Juice |
| Contact Us | Internal | Passing Juice |
| More on Google Scholar | External | Passing Juice |
| Curated BibTeX Dataset | External | Passing Juice |
SEO Keywords
Keywords Cloud
data crawl research analysis stats common papers open web latest
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| crawl | 12 |  |
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| web | 10 | |
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| common | 6 | |
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| analysis | 5 | |
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| data | 4 | |
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Usability
Url
Domain : commoncrawl.org
Length : 15
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
|
Too bad, your website is using inline styles. |
|
Great, your website has few CSS files. |
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Perfect, your website has few JavaScript files. |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
|
Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Great, your website has an XML sitemap.
| https://commoncrawl.org/sitemap.xml |
Robots.txt
https://commoncrawl.org/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
Free SEO Testing Tool
Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.