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Website review

 Generated on August 31 2021 22:21 PM

Old statistics? UPDATE !

The score is 53/100

SEO Content


Jean-loup's home page

Length : 21

Perfect, your title contains between 10 and 70 characters.

Length : 0

Very bad. We haven't found meta description on your page. Use this free online meta tags generator to create description.

Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
H1 H2 H3 H4 H5 H6
5 0 0 1 0 0
  • [H1] Jean-loup's home page
  • [H1] Data compression
  • [H1] Security
  • [H1] Patents
  • [H1] Work
  • [H4] Version française
Images We found 26 images on this web page.

5 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 : 34%

Ideal! This page's ratio of text to HTML code is between 25 and 70 percent.
Flash Perfect, no Flash content has been detected on this page.
Iframe Great, there are no Iframes detected on this page.

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 50 links including 8 link(s) to files

Anchor Type Juice
Data compression Internal Passing Juice
gzip Internal Passing Juice
zip Internal Passing Juice
zlib Internal Passing Juice
fractal image compression Internal Passing Juice
comp.compression FAQ Internal Passing Juice
Security Internal Passing Juice
Patents Internal Passing Juice
The game of go Internal Passing Juice
gzip External Passing Juice
Mark Adler External Passing Juice
Usenix 2009 STUG award External Passing Juice
video External Passing Juice
PGP External Passing Juice
1950 External Passing Juice
1951 External Passing Juice
PNG External Passing Juice
PPP External Passing Juice
Mark Nelson External Passing Juice
fractal image compression External Passing Juice
here External Passing Juice
tar.gz Internal Passing Juice
zip Internal Passing Juice
FAQ External Passing Juice
comp.compression External Passing Juice
ftp External Passing Juice
gzip External Passing Juice
section 8 External Passing Juice
here Internal Passing Juice
Ecole Polytechnique External Passing Juice
paper External Passing Juice
pulsars External Passing Juice
Cygnus Loop Internal Passing Juice
Crab Nebula External Passing Juice
Service d'Aéronomie du CNRS External Passing Juice
Ada External Passing Juice
Alsys External Passing Juice
Ada language design team External Passing Juice
Chorus External Passing Juice
General Electric Medical Systems External Passing Juice
Mandrakesoft External Passing Juice
Linux Mandrake External Passing Juice
interviewed on Slashdot External Passing Juice
Vision IQ / Poseidon External Passing Juice
Business Objects External Passing Juice
Google France External Passing Juice
Planete Linux External Passing Juice
here Internal Passing Juice
here Internal Passing Juice
Back to the index Internal Passing Juice

SEO Keywords

Keywords Cloud page zip data patents zlib faq from format used compression
Keywords Consistency
Keyword Content Title Keywords Description Headings
compression 14
data 9
format 9
zlib 8
patents 7


Url Domain :
Length : 10
Favicon Great, your website has a favicon.
Printability We could not find a Print-Friendly CSS.
Language You have not specified the language. Use this free meta tags generator to declare the intended language of your website.
Dublin Core This page does not take advantage of Dublin Core.


Doctype XHTML 1.0 Transitional
Encoding Perfect. Your declared charset is ISO-8859-1.
W3C Validity Errors : 68
Warnings : 27
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.
Perfect. No inline css has been found in HTML tags!
Great, your website has few CSS files.
Perfect, your website has few JavaScript files.
Perfect, your website takes advantage of gzip.


Mobile Optimization
Apple Icon
Meta Viewport Tag
Flash content


XML Sitemap Missing

Your website does not have an XML sitemap - this can be problematic.

A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.

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


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