lebesgue.fr Website Information

Daily Unique Visits: 1,064

Daily Page Views: 2,128

Income Per Day: $7

Estimated Value: $1,680

lebesgue.fr is registered under .FR top-level domain. Please check other sites in .FR zone.

No name server records were found.

and is probably hosted by Renater. See the full list of other websites hosted by Renater.

The highest website lebesgue.fr position in Alexa rank database was 62464 and the lowest rank position was 999642. Current position of lebesgue.fr in Alexa rank database is 673781.

Desktop speed score of lebesgue.fr (68/100) is better than the results of 47.59% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of lebesgue.fr (91/100) is better than the results of 32.41% of other sites and means that the page is mobile-friendly.

Mobile speed score of lebesgue.fr (56/100) is better than the results of 45.93% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

lebesgue.fr Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

lebesgue.fr whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

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%% This is the AFNIC Whois server.
%%
%% complete date format: YYYY-MM-DDThh:mm:ssZ
%%
%% Rights restricted by copyright.
%% See https://www.afnic.fr/en/domain-names-and-support/everything-there-is-to-know-about-domain-names/find-a-domain-name-or-a-holder-using-whois/
%%
%%

domain: lebesgue.fr
status: ACTIVE
eppstatus: active
hold: NO
holder-c: UDRU26-FRNIC
admin-c: UDRU20-FRNIC
tech-c: UDRU21-FRNIC
registrar: NAMESHIELD
Expiry Date: 2023-09-18T08:57:03Z
created: 2012-02-13T17:13:56Z
last-update: 2022-09-16T22:19:29Z
source: FRNIC

nserver: resone.univ-rennes1.fr
nserver: soleil.uvsq.fr
source: FRNIC

registrar: NAMESHIELD
address: 39 boulevard des Capucines
address: 75002 PARIS
country: FR
phone: +33.241182828
fax-no: +33.241182829
e-mail: registrar@nameshield.net
website: https://www.nameshield.com/contact-nameshield/
anonymous: No
registered: 1997-12-29T00:00:00Z
source: FRNIC

nic-hdl: UDRU20-FRNIC
type: ORGANIZATION
contact: UNIVERSITE DE RENNES 1
address: DIRECTION de la communication
address: 2, rue du Thabor
address: 35065 Rennes
country: FR
phone: +33.223237121
e-mail: communication@univ-rennes1.fr
registrar: NAMESHIELD
changed: 2022-11-23T08:01:36.116211Z
anonymous: NO
obsoleted: NO
eppstatus: associated
eppstatus: active
eligstatus: not identified
reachstatus: not identified
source: FRNIC

nic-hdl: UDRU21-FRNIC
type: ORGANIZATION
contact: UNIVERSITE DE RENNES 1
address: DIRECTION du systeme d'information
address: 2, rue du Thabor
address: 35065 Rennes
country: FR
phone: +33.223237121
e-mail: domaines@listes.univ-rennes1.fr
registrar: NAMESHIELD
changed: 2022-11-23T08:01:36.120649Z
anonymous: NO
obsoleted: NO
eppstatus: associated
eppstatus: active
eligstatus: not identified
reachstatus: not identified
source: FRNIC

nic-hdl: UDRU26-FRNIC
type: ORGANIZATION
contact: UNIVERSITE DE RENNES 1
address: PRESIDENT de l'universite
address: 2, rue du Thabor
address: 35065 Rennes
country: FR
phone: +33.223237121
e-mail: domaines@listes.univ-rennes1.fr
registrar: NAMESHIELD
anonymous: NO
obsoleted: NO
eppstatus: associated
eppstatus: active
eligstatus: not identified
reachstatus: not identified
source: FRNIC

>>> WHOIS request date: 2023-08-12T16:10:28.318847Z

lebesgue.fr server information

Servers Location

lebesgue.fr desktop page speed rank

Last tested: 2016-12-02

Desktop Speed Medium

68/100

lebesgue.fr Desktop Speed Test Quick Summary

priority - 20Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://lebesgue.fr/sites/all/modules/languageicons/flags/en.png (expiration not specified)
http://lebesgue.fr/sites/all/modules/languageicons/flags/fr.png (expiration not specified)
http://lebesgue.fr/sites/all/themes/lebesgue/css/corner-box.css (expiration not specified)
http://lebesgue.fr/sites/all/themes/lebesgue/css/f…oratorstd-webfont.woff (expiration not specified)
http://lebesgue.fr/sites/all/themes/lebesgue/css/slide-scroll.css (expiration not specified)
http://lebesgue.fr/sites/all/themes/lebesgue/img/logo_gris32.png (expiration not specified)
http://lebesgue.fr/sites/default/files/attach/UBL.jpg (expiration not specified)
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http://lebesgue.fr/sites/default/files/js/js_UmI-x…KwjnbMiahgyg5rPxxwc.js (expiration not specified)
http://lebesgue.fr/sites/default/files/js/js_gPqjY…SWTmZCGy9OqaHppNxuQ.js (expiration not specified)
http://lebesgue.fr/sites/default/files/js/js_uwrfB…RUh8NNq_fZRTb6dsNb4.js (expiration not specified)
http://lebesgue.fr/sites/default/files/portrait_2016.png (expiration not specified)
http://www.lebesgue.fr/sites/default/files/attach/…illes%26Maths_2016.jpg (expiration not specified)
http://www.lebesgue.fr/sites/default/files/sem2017/CAST/qrcode_en.svg (expiration not specified)
http://www.lebesgue.fr/sites/default/files/sem2017/kaehler/qrcode_en.svg (expiration not specified)
http://www.lebesgue.fr/sites/default/files/sem2017/teich/qrcode_en.svg (expiration not specified)
http://www.lebesgue.fr/sites/default/files/seminar…terclass/qrcode_en.svg (expiration not specified)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 7 blocking script resources and 44 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

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http://lebesgue.fr/sites/default/files/js/js_45Jni…5scizolw-FrujytMgiY.js
http://lebesgue.fr/sites/default/files/js/js_UmI-x…KwjnbMiahgyg5rPxxwc.js
https://cdn.mathjax.org/mathjax/latest/MathJax.js?…=TeX-AMS-MML_HTMLorMML
http://lebesgue.fr/sites/default/files/js/js_gPqjY…SWTmZCGy9OqaHppNxuQ.js
http://lebesgue.fr/sites/default/files/js/js_-XnNu…5f9qjtKu3ivoUF-lymA.js
http://lebesgue.fr/sites/default/files/js/js_uwrfB…RUh8NNq_fZRTb6dsNb4.js

Optimize CSS Delivery of the following:

http://lebesgue.fr/modules/system/system.base.css?ohigoc
http://lebesgue.fr/modules/system/system.menus.css?ohigoc
http://lebesgue.fr/modules/system/system.messages.css?ohigoc
http://lebesgue.fr/modules/system/system.theme.css?ohigoc
http://lebesgue.fr/modules/aggregator/aggregator.css?ohigoc
http://lebesgue.fr/sites/all/modules/calendar/css/…ar_multiday.css?ohigoc
http://lebesgue.fr/modules/comment/comment.css?ohigoc
http://lebesgue.fr/sites/all/modules/date/date_api/date.css?ohigoc
http://lebesgue.fr/sites/all/modules/date/date_pop…epicker.1.7.css?ohigoc
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http://lebesgue.fr/sites/all/modules/nice_menus/css/nice_menus.css?ohigoc
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http://lebesgue.fr/sites/all/themes/lebesgue/css/slide-scroll.css
http://lebesgue.fr/sites/all/themes/lebesgue/css/corner-box.css

priority - 8Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 76.5KiB (78% reduction).

Compressing http://www.lebesgue.fr/sites/default/files/seminar…terclass/qrcode_en.svg could save 19.8KiB (79% reduction).
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Compressing http://www.lebesgue.fr/sites/default/files/sem2017/kaehler/qrcode_en.svg could save 18.8KiB (78% reduction).
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priority - 4Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 34.9KiB (36% reduction).

Compressing http://lebesgue.fr/sites/default/files/portrait_2016.png could save 9.7KiB (24% reduction).
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priority - 2Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 50% of the final above-the-fold content could be rendered with the full HTML response.

priority - 1Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 8.1KiB (45% reduction).

Minifying http://lebesgue.fr/sites/all/themes/lebesgue/css/global.css?ohigoc could save 4.8KiB (50% reduction) after compression.
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Minifying http://lebesgue.fr/modules/system/system.base.css?ohigoc could save 825B (44% reduction) after compression.
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priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 12.6KiB (26% reduction).

Minifying http://lebesgue.fr/sites/default/files/js/js_-XnNu…5f9qjtKu3ivoUF-lymA.js could save 5.2KiB (60% reduction) after compression.
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lebesgue.fr Desktop Resource Breakdown

Total Resources	85
Number of Hosts	4
Static Resources	43
JavaScript Resources	9
CSS Resources	42

lebesgue.fr mobile page speed rank

Last tested: 2016-12-02

Mobile Speed Bad

56/100

lebesgue.fr Mobile Speed Test Quick Summary

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 7 blocking script resources and 44 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 31Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 8Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 76.5KiB (78% reduction).

priority - 3Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 29.6KiB (31% reduction).

Compressing http://lebesgue.fr/sites/default/files/portrait_2016.png could save 9.7KiB (24% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/UBS-36.jpeg could save 4.1KiB (47% reduction).
Compressing http://lebesgue.fr/sites/default/files/attach/logo_2016.jpg could save 3.9KiB (26% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/lmba-36.jpg could save 2.7KiB (66% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/youtube.png could save 1.5KiB (53% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/LMJL-36.png could save 1.3KiB (52% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/UR1-36.png could save 1.2KiB (26% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/twitter-logo.png could save 1.1KiB (64% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/ENS-36.png could save 1.1KiB (50% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/INRIA-36.png could save 900B (26% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/IRMAR-36.png could save 851B (49% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/logo_lebesgue_noir-150.png could save 750B (12% reduction).
Compressing http://lebesgue.fr/sites/default/files/img/UR2-36.png could save 533B (21% reduction).

priority - 1Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 8.1KiB (45% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 12.6KiB (26% reduction).

lebesgue.fr Mobile Resource Breakdown

Total Resources	85
Number of Hosts	4
Static Resources	43
JavaScript Resources	9
CSS Resources	42

lebesgue.fr mobile page usability

Last tested: 2016-12-02

Mobile Usability Good

91/100

lebesgue.fr Mobile Usability Test Quick Summary

priority - 8Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="/" class="active">Home</a> is close to 2 other tap targets.

The tap target <a href="/agenda">Agenda</a> and 3 others are close to other tap targets.

The tap target <a href="/agenda">Agenda</a> and 4 others are close to other tap targets.

The tap target <a href="/master">Lebesgue Master's program</a> and 1 others are close to other tap targets.

The tap target <a href="/master">Lebesgue Master's program</a> and 3 others are close to other tap targets.

The tap target <a href="https://twitte…CentreLebesgue"></a> and 2 others are close to other tap targets.

The tap target <a href="/" class="language-link active">English</a> and 1 others are close to other tap targets.

The tap target <a href="/fr" class="language-link">Français</a> and 1 others are close to other tap targets.

The tap target <a href="/contact">contact</a> is close to 1 other tap targets.

The tap target <a href="/content/post-doc">read more</a> and 3 others are close to other tap targets.

The tap target <div id="slide-scroll-slider"></div> is close to 1 other tap targets.

The tap target <a href="/content/sem2017">Thematic semes…s and Geometry</a> and 6 others are close to other tap targets.

The tap target <a href="/content/activities">Activities</a> and 4 others are close to other tap targets.

The tap target <div id="block-block-19" class="block block-block">Crédits Web…ntions légales</div> is close to 1 other tap targets.

lebesgue.fr HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Line: 1 Column: 1 - 54
"...<!DOCTYPE html PUBLIC "-//W3C//DTD HTML+RDFa 1.1//EN"> <html..."

Attribute “xmlns:content” not allowed here.

Line: 11 Column: 55 - 48
"... 1.1//EN"> <html lang="en" dir="ltr" version="HTML+RDFa 1.1" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"> <head..."

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

The “version” attribute on the “html” element is obsolete. You can safely omit it.

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Line: 12 Column: 49 - 51
"...LSchema#"> <head profile="http://www.w3.org/1999/xhtml/vocab"> <me..."

Bad value “all and (min-width: 740px) and (min-device-width: 740px), (max-device-width: 800px) and (min-width: 740px) and (orientation:landscape)” for attribute “media” on element “style”: Deprecated media feature “min-device-width”. For guidance, see the Deprecated Media Features section in the current Media Queries specification.

Line: 80 Column: 1 - 166
"... 9]><!--> <style type="text/css" media="all and (min-width: 740px) and (min-device-width: 740px), (max-device-width: 800px) and (min-width: 740px) and (orientation:landscape)"> @impo..."

Bad value “all and (min-width: 980px) and (min-device-width: 980px), all and (max-device-width: 1024px) and (min-width: 1024px) and (orientation:landscape)” for attribute “media” on element “style”: Deprecated media feature “min-device-width”. For guidance, see the Deprecated Media Features section in the current Media Queries specification.

Line: 88 Column: 1 - 176
"... 9]><!--> <style type="text/css" media="all and (min-width: 980px) and (min-device-width: 980px), all and (max-device-width: 1024px) and (min-width: 1024px) and (orientation:landscape)"> @impo..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 123 Column: 23 - 80
"...d-button"><img src="/sites/all/themes/lebesgue/img/logo_gris32.png"></div>..."

Bad value “auto” for attribute “width” on element “img”: Expected a digit but saw “a” instead.

Line: 141 Column: 52 - 145
"...Lebesgue"><img src="/sites/default/files/img/twitter-logo.png" alt="twitter" height="20" width="auto" /></a> ..." Line: 141 Column: 205 - 293
"...Fr-maths"><img src="/sites/default/files/img/youtube.png" alt="twitter" height="20" width="auto" /></a> ..."

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

Line: 147 Column: 76 - 130
"...t active"><a href="/" class="language-link active" xml:lang="en"><img c..." Line: 147 Column: 345 - 394
"..."fr last"><a href="/fr" class="language-link" xml:lang="fr"><img c..."

Duplicate ID “corner-box”.

Line: 175 Column: 5 - 25
".../li> <li><div id="corner-box"> <div ..." Line: 440 Column: 7 - 27
"...x"> <div id="corner-box"> <di..."

Attribute “datatype” not allowed on element “span” at this point.

Line: 333 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2018-09-04T05:00:00+02:00">Sep 4,..." Line: 333 Column: 259 - 368
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2018-09-06T23:00:00+02:00">Sep 6,..." Line: 336 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2018-09-26T05:00:00+02:00">Sep 26..." Line: 336 Column: 260 - 369
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2018-09-28T23:00:00+02:00">Sep 28..." Line: 339 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2018-10-15T05:00:00+02:00">Oct 15..." Line: 339 Column: 260 - 369
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2018-10-17T23:00:00+02:00">Oct 17..." Line: 342 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2018-11-22T14:00:00+01:00">Nov 22..." Line: 342 Column: 260 - 369
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2018-11-23T17:00:00+01:00">Nov 23..." Line: 345 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2018-12-18T04:00:00+01:00">Dec 18..." Line: 345 Column: 260 - 369
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2018-12-20T22:00:00+01:00">Dec 20..." Line: 348 Column: 125 - 236
"...ay-range"><span class="date-display-start" property="dc:date" datatype="xsd:dateTime" content="2019-01-31T14:00:00+01:00">Jan 31..." Line: 348 Column: 260 - 369
".../span> to <span class="date-display-end" property="dc:date" datatype="xsd:dateTime" content="2019-02-01T17:00:00+01:00">Feb 1,..."

Attribute “content” not allowed on element “span” at this point.

No “p” element in scope but a “p” end tag seen.

Line: 361 Column: 7 - 10
"... </div></p></div>..."

Duplicate ID “titre-entoure”.

Line: 405 Column: 7 - 30
"...x"> <div id="titre-entoure"> <div ..."

Warnings

Attribute with the local name “xmlns:content” is not serializable as XML 1.0.

Attribute with the local name “xmlns:dc” is not serializable as XML 1.0.

Attribute with the local name “xmlns:foaf” is not serializable as XML 1.0.

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Attribute with the local name “xmlns:rdfs” is not serializable as XML 1.0.

Attribute with the local name “xmlns:sioc” is not serializable as XML 1.0.

Attribute with the local name “xmlns:sioct” is not serializable as XML 1.0.

Attribute with the local name “xmlns:skos” is not serializable as XML 1.0.

Attribute with the local name “xmlns:xsd” is not serializable as XML 1.0.

Consider avoiding viewport values that prevent users from resizing documents.

Line: 27 Column: 1 - 122
"...e/png" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no" /> <ti..."

The first occurrence of ID “corner-box” was here.

Line: 168 Column: 15 - 35
"... <ul><li><div id="corner-box"> <div ..." Line: 168 Column: 15 - 35
"... <ul><li><div id="corner-box"> <div ..."

The first occurrence of ID “titre-entoure” was here.

Line: 383 Column: 7 - 30
"...x"> <div id="titre-entoure"> <div ..."

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 243 Column: 7 - 68
"... <section id="section-content" class="section section-content"> <di..."

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lebesgue.fr Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

lebesgue.fr TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

LEBESGUE.FR Henri Lebesgue Center | Henri Lebesgue Center

lebesgue.fr Website Information

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lebesgue.fr desktop page speed rank

lebesgue.fr Desktop Speed Test Quick Summary

priority - 20Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 7 blocking script resources and 44 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 8Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 76.5KiB (78% reduction).

priority - 4Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 34.9KiB (36% reduction).

priority - 2Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

priority - 1Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 8.1KiB (45% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 12.6KiB (26% reduction).

lebesgue.fr Desktop Resource Breakdown

lebesgue.fr mobile page speed rank

lebesgue.fr Mobile Speed Test Quick Summary

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 7 blocking script resources and 44 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 31Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 8Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 76.5KiB (78% reduction).

priority - 3Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 29.6KiB (31% reduction).

priority - 1Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 8.1KiB (45% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 12.6KiB (26% reduction).

lebesgue.fr Mobile Resource Breakdown

lebesgue.fr mobile page usability

lebesgue.fr Mobile Usability Test Quick Summary

priority - 8Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

lebesgue.fr HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Attribute “xmlns:content” not allowed here.

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

The “version” attribute on the “html” element is obsolete. You can safely omit it.

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Bad value “auto” for attribute “width” on element “img”: Expected a digit but saw “a” instead.

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

Duplicate ID “corner-box”.

Attribute “datatype” not allowed on element “span” at this point.

Attribute “content” not allowed on element “span” at this point.

No “p” element in scope but a “p” end tag seen.

Duplicate ID “titre-entoure”.