Page scores

Page Score
Addgene - Homepage (Landing page)
Addgene: Browser Information for Addgene's Website
Addgene: Create an Addgene
Addgene: Browse Addgene's Plasmids
Addgene: Plasmid Special Collections and Kits
Addgene: Popular Plasmids
Addgene Addgene Alerts
Addgene: Deposit Plasmids
Addgene Start Depositing
Addgene - Homepage

Website thumbnail is a website with English content. Below is an analysis of the content on Optimize so that you rank better in Google for your chosen keywords.
This page was last updated 2016-01-16

SEO Camel Score: 69/100

SEO Keywords Analysis

Content language
English (en)
Content analysis
(Web of trust)
Good site
Content sample
Login | Create Account Create Account Find Plasmids Search Browse Special Collections Popular Plasmids Alerts Deposit Plasmids Why Deposit Start Deposit My Plasmids My Articles Technology Transfer / Licensing Rewards Points How to Order Ordering Instructions Purchase Orders Pricing and Payment Import Permits Shipping International Customers Industry Customers Technology Transfer Plasmid Reference Overview Analyze Sequence Vector Database Protocols Molecular Biology Reference About Addgene Mission Contact Leadership Careers Testimonials Technology Transfer / Licensing Links FAQ News Blog Please note: Your browser does not support the features used on Addgene's website. You may not be able to create an account or request
Recurring phrases
fluorescent proteins3
crispr guide2
addgene's website.2
create account2
special collections2
order video2
technology transfer / licensing2
how to order video2
the features used on addgene's website.2
please note: your browser does not2
Keyword cloud
learn plasmids technology deposit find fluorescent addgene crispr contact
Keyword consistency
Keyword Freq Title Keywords Description Headings

Meta tags

Addgene - Homepage

Length: 18

Perfect, your title contains between 10 and 70 characters.
Meta Description
Addgene, the nonprofit global plasmid repository, archives and distributes plasmids for scientists, while also providing free molecular biology resources.

Length: 154

Great, your meta description contains between 70 and 160 characters.
Meta Keywords

Length: 0

Very bad. We haven't found meta keywords on your page.
Og Meta Properties
This page does not take advantage of Og Properties. These tags allow social crawler's better structurize your page.

SEO content

H1 H2 H3 H4 H5 H6
0 8 8 0 0 0

  • [H2] A Better Way to Share Plasmids
  • [H2] Plasmids 101 eBook
  • [H2] CRISPR Plasmids
  • [H2] Put Yourself on the Plasmid Map
  • [H2] Light Up Your Research
  • [H2] Have a Question?
  • [H2] Special Collections View All »
  • [H2] Community
  • [H3] New CRISPR Guide
  • [H3] Viral Vector Guide
  • [H3] CRISPR Tools
  • [H3] Fluorescent Proteins
  • [H3] Refer a Colleague
  • [H3] Become a Depositor
  • [H3] How To Order Video
  • [H3] Follow @Addgene
20 images found

16 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio

Ideal! This page's ratio of text to HTML code is between 70 and 25 percent.
Perfect, no Flash content has been detected on this page.
Great, there are no Iframes detected on this page.
URL Rewrite
Bad. Your links have query string.
Underscores in the URLs
We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
Link juice per link
2.4 %

This page has 42 outbound links. Therefore, each link is giving 2.4 % of the link juice to the target page.
On-page links
Filter links
Click here to show all links (42)


Domain :
Length : 15
Great, your website has a favicon.
We could not find a Print-Friendly CSS.
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.


Perfect. Your declared charset is UTF-8.
Email privacy
Warning! At least one email address has been found in the plain text.
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
The website encrypts data when communicating with the server.
Speed tips
Nested table Result Excellent, your website doesn't use nested tables.
Inline css Result Perfect. No inline css has been found in HTML tags!
CSS count Result Great, your website has few CSS files.
JS count Results Perfect, your website has few JavaScript files.


FactorScoreLast check
Pagerank Failed to generate a valid hash for PR check. / 102017-02-15
FactorRankingLast check
Alexa global rank 33204 2017-02-15
Alexa country rank Rank : 16837
Country : United States
Social shares
SourceViralityLast check
Google-plus shares 131 2017-02-15
Twitter shares n.a. 2017-02-15
Facebook 2017-02-15
Pinterest shares 0 2017-02-15
Linkedin shares 57 2017-02-15
Xing Shares : 0
Comments : 0
Clicks : 0
Reach : 0
Delicious shares n.a. 2017-02-15
Digg shares n.a. 2017-02-15
Stumpleupon shares n.a. 2017-02-15


HTTP/1.1 200 OK
Server: nginx/1.9.6
Date: Sat, 16 Jan 2016 17:02:37 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 6270
Connection: close
Vary: Accept-Encoding,Cookie
Content-Encoding: gzip
Set-Cookie: django_language=en; expires=Sun, 15-Jan-2017 17:02:37 GMT; Max-Age=31536000; Path=/
Link: ; rel="canonical"
Who own's the website (WHOIS)
Domain Name: ADDGENE.ORG
Registry Domain ID: D101926977-LROR
Registrar WHOIS Server:
Registrar URL:
Updated Date: 2017-01-24T18:06:32Z
Creation Date: 2003-11-04T16:11:29Z
Registry Expiry Date: 2017-11-04T16:11:29Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: clientTransferProhibited
Registry Registrant ID: TM6944-GANDI
Registrant Name: Turlach MacDonagh
Registrant Organization: Addgene Inc.
Registrant Street: 75 Sidney St Suite 550A
Registrant City: Cambridge
Registrant State/Province: MA
Registrant Postal Code: 02139
Registrant Country: US
Registrant Phone: +1.6172259000
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email:
Registry Admin ID: TM6944-GANDI
Admin Name: Turlach MacDonagh
Admin Organization: Addgene Inc.
Admin Street: 75 Sidney St Suite 550A
Admin City: Cambridge
Admin State/Province: MA
Admin Postal Code: 02139
Admin Country: US
Admin Phone: +1.6172259000
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email:
Registry Tech ID: TM6944-GANDI
Tech Name: Turlach MacDonagh
Tech Organization: Addgene Inc.
Tech Street: 75 Sidney St Suite 550A
Tech City: Cambridge
Tech State/Province: MA
Tech Postal Code: 02139
Tech Country: US
Tech Phone: +1.6172259000
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email:
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form:
>>> Last update of WHOIS database: 2017-02-16T02:07:36Z <<<

For more information on Whois status codes, please visit

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