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Traffic Rank

9,343 most visited website in the World Trend: down (+217)
3,959 most visited website in CN China
Traffic Rank is provided by Alexa

Visitors Localization

Low map legend High
CountryPercentDomain (ccTLD)Status
CN China24.1%wikipast.cnNot available.
CH Switzerland19.4%wikipast.chNot available.
US United States8.3%wikipast.usNot available.
IN India6.8%wikipast.inNot available.
FR France6.8%wikipast.frNot available.
Registering country code top level domains (ccTLD) can prevent potential competitors from taking advantage of your primary domain reputation. It is also one of the ways to improve country specific SEO and performance. (


Perfect, all images have ALT attribute.
Number of images: 1
Missing alt tag: 0
The "alt" attribute provides a text equivalent for the image. If the browser cannot display an image the alt description will be given in its place. Furthermore, some visitors cannot see images as they might be blind in which the alt tag provides a valuable image description. Finally, search engines utilize the alt attribute for image search indexing. (


We have found following title:


Length: 8 characters
The <TITLE> element provides a short piece of text describing the document. The title is very important as it shows in the window title bars, bookmarks and search results. Title should be between 60 to 80 characters long. (

Description Metatag

No Description Found.
The description attribute should provide a concise explanation of a Web page's content. Also, the description is often displayed on search engine results and can indirectly affect page ranking.

Keywords Metatag

No Keywords Found.
The keywords attribute was utilized by search engines to provide more accurate search results. Due to the over usage and spamming the keywords attribute has been phased out and is no longer relevant. Google doesn't use the "keywords" meta tag in web search ranking.

Text to HTML Ratio

The Text to HTML ratio is 44.65%
Original content is by far the single most important element to search engines. Low Text to HTML ratio indicates little content for search engines to index. We consider it to be good practice to have a Text to HTML ratio of at least 10% and ideal above 20%

Keyword Density & Consistency

Consistent Keywords % Density # Count T Title D Desc. H <H> A ALT B <b>
pages liées0.19%2-----
绝对最佳{{| |}\0.10%1-----
modifications récentes0.10%1-----
dernière modification0.10%1-----
information sur0.10%1-----
{引人入胜|美不胜收啊|迷幻效果|迷人的|有魅力|迷人的|令人陶醉|令人喜欢的|惊人的|惊人的|惊讶|惊奇的|壮丽的|盛大的|煽情|走出世界|充满活力|炫目活力|激动人心|活力|生动|光明|活泼|明亮|温暖|闪闪发光|发光|动态|清晰|强烈|健康|好|很好|太好|太安逸|绝了|漂亮|极好|难得一见|的确高级|高端哦|醉了|喜爱十分|很喜欢|完全喜欢|没得说的了|好到难以言语表达|无比壮丽|无法形容|美就一个字|非常美|太棒了|不得不定期|想不定都不行啊|力顶之|极度好|妙不可言|妙哦|我喜欢|大大的好|真好|真是好呢|很不错|收藏了收藏了|本页我收藏之|精彩绝伦|很出色哦|可爱|相当可爱|令人难以置信的可爱|相当可爱|真可爱|非常有魅力|非常有吸引力|非常有吸引力|很有吸引力|很有趣|非常有趣|不错的|完全不错|不是一般的有吸引力|读了7遍了还要继续读|下来再仔细阅读|下来再慢慢研究|的确学习了| |学了很多东西| |值得学习|值得表扬|难得难得|真是难得|很难得的|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|很棒|很棒|很棒|迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|迷人的|迷人的|迷人的|迷人的|迷人的|辉煌|相当辉煌|真正辉煌|梦幻般的辉煌|精彩|漂亮精彩|非常精彩|真正精彩|0.10%1-----
|学了很多东西| |值得学习|值得表扬|难得难得|真是难得|很难得的|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|很棒|很棒|很棒|迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|迷人的|迷人的|迷人的|迷人的|迷人的|辉煌|相当辉煌|真正辉煌|梦幻般的辉煌|精彩|漂亮精彩|非常精彩|真正精彩| ext非常美丽|非常美丽|非常美丽|非常美妙|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常漂亮|美丽|美丽|非常美丽|真正美丽|非常漂亮|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|令人难以置信的惊人|非常惊人|非常惊人|惊人的惊人|优秀|非常优秀|非常优秀|优秀|优秀评价|必须给5个星|怎么也要高平|我不得不说这是非常优秀的|非凡优秀|卓越表现|卓越|非常卓越|真正卓越|非凡的卓越|特别显着|非常显着|非凡的卓越|非常显著|独到|非凡的惊人|令人眼花缭乱|令人眼花缭乱|很耀眼|真正令人眼花缭乱|值得一学|0.10%1-----
|值得学习|值得表扬|难得难得|真是难得|很难得的|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|非常棒|很棒|很棒|很棒|迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|非常迷人的|迷人的|迷人的|迷人的|迷人的|迷人的|辉煌|相当辉煌|真正辉煌|梦幻般的辉煌|精彩|漂亮精彩|非常精彩|真正精彩| ext非常美丽|非常美丽|非常美丽|非常美妙|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常漂亮|美丽|美丽|非常美丽|真正美丽|非常漂亮|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|令人难以置信的惊人|非常惊人|非常惊人|惊人的惊人|优秀|非常优秀|非常优秀|优秀|优秀评价|必须给5个星|怎么也要高平|我不得不说这是非常优秀的|非凡优秀|卓越表现|卓越|非常卓越|真正卓越|非凡的卓越|特别显着|非常显着|非凡的卓越|非常显著|独到|非凡的惊人|令人眼花缭乱|令人眼花缭乱|很耀眼|真正令人眼花缭乱|值得一学| 令人眼花缭乱|令人眼花缭乱的|令人眼花缭乱的耀眼|令人眼花缭乱的|真正令人眼花缭乱的|令人眼花缭乱的|特别的|非凡的|非常特殊的|非凡的|极其特殊的|特别的|特别的|非常特别|非常特殊|令我惊讶|一惊非小啊|非常令人吃惊|非常惊人的|非常令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的|令人印象深刻的|令人难以置信的令人印象深刻的|令人印象深刻的|令人惊讶的令人震惊的|令人震惊的|令人震惊的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|令人惊讶的|令人惊讶的惊人|我印象深刻|无懈可击|真是高手啊|大神也|0.10%1-----
ext非常美丽|非常美丽|非常美丽|非常美妙|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常美丽|非常漂亮|美丽|美丽|非常美丽|真正美丽|非常漂亮|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|非常惊人|令人难以置信的惊人|非常惊人|非常惊人|惊人的惊人|优秀|非常优秀|非常优秀|优秀|优秀评价|必须给5个星|怎么也要高平|我不得不说这是非常优秀的|非凡优秀|卓越表现|卓越|非常卓越|真正卓越|非凡的卓越|特别显着|非常显着|非凡的卓越|非常显著|独到|非凡的惊人|令人眼花缭乱|令人眼花缭乱|很耀眼|真正令人眼花缭乱|值得一学| 令人眼花缭乱|令人眼花缭乱的|令人眼花缭乱的耀眼|令人眼花缭乱的|真正令人眼花缭乱的|令人眼花缭乱的|特别的|非凡的|非常特殊的|非凡的|极其特殊的|特别的|特别的|非常特别|非常特殊|令我惊讶|一惊非小啊|非常令人吃惊|非常惊人的|非常令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的|令人印象深刻的|令人难以置信的令人印象深刻的|令人印象深刻的|令人惊讶的令人震惊的|令人震惊的|令人震惊的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|令人惊讶的|令人惊讶的惊人|我印象深刻|无懈可击|真是高手啊|大神也| |大神就这样非常好的|往往高人就这样真的很棒|0.10%1-----
令人眼花缭乱|令人眼花缭乱的|令人眼花缭乱的耀眼|令人眼花缭乱的|真正令人眼花缭乱的|令人眼花缭乱的|特别的|非凡的|非常特殊的|非凡的|极其特殊的|特别的|特别的|非常特别|非常特殊|令我惊讶|一惊非小啊|非常令人吃惊|非常惊人的|非常令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的令人惊讶的|令人惊讶的|令人惊讶的|令人惊讶的|令人印象深刻的|令人难以置信的令人印象深刻的|令人印象深刻的|令人惊讶的令人震惊的|令人震惊的|令人震惊的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|非常惊人的|令人惊讶的|令人惊讶的惊人|我印象深刻|无懈可击|真是高手啊|大神也| |大神就这样非常好的|往往高人就这样真的很棒| 无话可说|无可挑剔|完美典范|非常好的|客观说来0.10%1-----
Keywords density and consistency are notable factors for optimal page SEO. Preferred keywords should have higher keywords density indicating their importance. Optimally, preferred keywords should also be consistently utilized in multiple essential areas of the page such as title, description meta tag, h1 through h6 headings, alt image attributes, backlinks and internal links anchor text. Keyword density of above 6% can indicate that the word or a phrase appears too many time in the content.


No frames detected.
It is not recommended to use frames or iframes because they can cause problems for search engines. It is best to avoid frames and inline frames whenever possible ( If frames must be utilized consider <noframes> tag. (


No flash detected.
Flash and other reach-media technologies should primarily be utilized for decorative purposes. This makes your site more search engine friendly and improves accessibility (


  • 1 <H1>
    • Accueil
  • 1 <H2>
    • Menu de navigation
  • 8 <H3>
    • Outils personnels
    • Espaces de noms
    • Variantes
    • Affichages
    • Plus
    • Rechercher
    • Navigation
    • Outils
  • 0 <H4>
  • 0 <H5>
  • 0 <H6>
The <h1> to <h6> tags are used to define HTML headings. The <h1> tag should hold the title describing the content of a specific page therefore only one h1 tag is needed per page. There can be any number of h2 - h6 tags but they should be added in order of importance (


The <!DOCTYPE> declaration tells the web browser about what version of HTML the page is written in. It is good practice to always add the <!DOCTYPE> declaration to the HTML documents, so that the browser knows what type of document to expect. (

Character Encoding

UTF-8 (Unicode)
Covers: Worldwide
To display an HTML page correctly, the browser must know what character-set to use.


Declared Language: fr (French)
Language Attribute: fr (French)
The HTML "lang" attributes and language metatag define the base language to be used for displaying text and characters on a Website.

W3C Markup Validation

Status: PASSED [0 errors, 0 warning(s)]
It is good practice to use valid HTML/XHTML markup as it ensures that the search engines can read the website correctly as well as it improves cross browser compatibility (W3C Markup Validation Service).

Deprecated HTML elements

Good, no deprecated elements found.
A deprecated element is one that has been outdated by newer constructs. Deprecated elements may become obsolete in future versions of HTML so it is recommended not to use them.

Nested HTML Tables

Great, no nested tables detected.
In general it is not recommended to use nested tables or to utilize tables for page layout. Nested tables are known to cause performance issues due to increased HTML size and rendering time. It is better to use CSS layout instead.

Web Analytics

No web anlytics tools found.
Web Analytics Tools collect and measure information about visitor activity on a website. Well interpreted web traffic data is invaluable in determining a successfully web strategy and assessing the effectiveness of a website. At a minimum, we recommend to utilize at least one web analytics tool.


Not found
A robots.txt file restricts access to search engine robots that crawl the web. (

XML Sitemap

Not found
Sitemaps inform search engines about pages available for crawling. In its simplest form, a Sitemap is an XML file that lists URLs for a site along with additional metadata about each URL. XML sitemap should help search engines to crawl the site more intelligently. (

Accessibility Check

WCAG 2.0 (AA) Conformance Test: FAILED [2 error(s)]
  1. Anchor contains no text.
    [Line 82, Col 30] <a href="#"></a>
    Add text to the a element or the title attribute of the a element or, if an image is used within the anchor, add Alt text to the image.
  2. Anchor contains no text.
    [Line 101, Col 50] <a href="#"></a>
    Add text to the a element or the title attribute of the a element or, if an image is used within the anchor, add Alt text to the image.
Following Web accessibility standards while developing a website can help users with specific needs, such as visually impaired, motor/mobility, auditory, seizures, as well as cognitively and intellectually impaired disabilities. Some of these fixes include general seo applications like Alt tags, Form labels, fixing empty links and adding alternative text. To read more about accessibility guidelines follow this link Web Content Accessibility Guidelines (WCAG) Overview.

Mobile Rendering

Mobile internet usage has been exceeding PC's since 2014 and growing so it is critical for pages to render correctly on mobile devices.

Mobile Optimization

Mobile PageSpeed analyzes webpages and evaluates its performance while providing suggestions on reducing page load times. Google is incorporating website speed in search ranking (

Mobile Experience

Mobile users have now become a critical part of online visits. Making the website mobile friendly is no longer an option but rather necessity. (


No hi-resolution (192x192) icon found.
Apple touch icon not found
The Favicon is a small icon associated with a website. The Favicon is important because it is displayed next to the website's URL in the address bar of the browser as well as in bookmarks and shortcuts.

Custom 404 Error Page

No valid custom 404 error page detected.
A 404 is a standard http response code for a resource that cannot be located on the server. Web servers usually return a "404 Not Found" error page for non-existing pages. Unfortunately, these default error pages are very generic and a not very user friendly, therefore, using a custom 404 error page is highly recommended.

Process of returning http status code "200 OK" for a non-existent page or redirecting users to another url is called soft 404. Soft 404 errors are problematic for search engines and are not advisable. (


Could not locate print-friendly CSS.
Print-friendly pages are designed to fit on an 8.5"x11" or A4 sheet and usually include only the content of the page, along with source information.

W3C CSS Validation

Status: FAILED [8 error(s)]
It is recommended to use valid CSS to ensure that the website displays correctly. (W3C CSS Validation Service).

Domain Age

Data could not be obtained.
Age of the domain is one of the many signals that search engines utilize for ranking. Brand new domains generally have more difficult time to rank high for the first few months.

Domain Expiration

Not available.
Domain expiration far in to the future is considered a good practice as it promotes confidence in your website, decreases chances of losing domain and in certain cases might help with search engine ranking. (

IP Canonicalization

No, your site's IP does not redirect to
Some web spiders index websites using IP as well as domain name which can cause duplicate content if there is no IP Canonicalization.

URL Canonicalization

No, the and do not resolve to the same URL.
Domain name with WWW and without can be considered as different pages causing duplicate content for search engines. (

Page Speed

Google Page Speed score: 77% (Average)
Rq. Requests Hst. Hosts LT Load time Html Img Images JS JavaScript CSS F Flash O Other PS Page Size
1012.56s44.42 KB8.25 KB294.07 KB43.53 KB0 B948 B391.2 KB

Avoid landing page redirects
Enable compression
Leverage browser caching
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
Prioritize visible content

Subscribe for more details
PageSpeed analyzes webpages and evaluates its performance while providing suggestions on reducing page load times. Google is now incorporating website speed in search ranking (

Server Information


Ecole Polytechnique Federale de Lausanne
Server IP:
Server Location:
CH VAUD, Lausanne

Name Server 1: (
Name Server 2: (
Your server's IP address and location have minor impact on the country specific SEO. It is recommend to host the website in the country where the number of vistors is desired to be the highest. Search engines take the geolocation of a server into account. (


Issued To:
Common Name (CN):
Common Name (CN):
Let's Encrypt Authority X3
Oranization (O):
Let's Encrypt
Period of Validity
Begins On:
Expires On:

Warning: The SSL certificate is invalid for domain.
Google™ is now treating HTTPS as a ranking signal. HTTPS is a secure web protocol that allows for encrypted communication between website and the client. HTTPS protocol requires your website to have an SSL certificate, which can be purchased from a Certificate Authority (CA) or SSL vendor. (

Safe Browsing

Safe Browsing is a service provided by Google that enables applications to check URLs against Google's constantly updated lists of suspected phishing and malware pages. If your site is marked as unsafe see our guide on how to fix websites blocked by google safe browsing

Spam Blacklist

Good, your IP is not blacklisted.
Spammer directories provide lists of IPs from which spam distribution is reported. Emails sent from the blocked IPs are subject to closer scrutiny and are much less likely to be delivered. For email campaigns it is recommended to utilize professional email services to ensure that your website IP is not blocked. (

Email Address Obfuscation

Great, this webpage does not contain email addresses displayed in plain text.
It is recommended to obfuscate email addresses posted in public. This prevents email addresses from being automatically harvested by spam bots which helps to decrease number of unsolicited emails. See our email obfuscation techniques guide for more details.

Directory Browsing

Great, your server has directory browsing disabled.
Protect Webserver directories from unwanted browsing. To enhance security, directory browsing should be disabled unless you have a specific reason to enable it. If you enable directory browsing, make sure that you only enable it on the particular directory or directories that you want to share. (

Whois Privacy

No contact information available.
Whois Privacy is a service that prevents domain owner contact information from being displayed in the publicly available Whois records. This can help to cut down on unwanted spam but utilizing Whois privacy should be evaluated against business model and branding strategy.

Server Signature

Good, your server does not provide version information.
Attackers can utilize server signature versioning information to their advantage therefore it is recommended to disable it when possible.