klett.ch Website Information

Daily Unique Visits: 834

Daily Page Views: 1,668

Income Per Day: $5

Estimated Value: $1,200

This website is located in Switzerland and is using following IP address 5.148.171.143. See the complete list of popular websites hosted in Switzerland.

klett.ch is registered under .CH top-level domain. Please check other sites in .CH zone.

Website klett.ch is using the following name servers:

ns6.nine.ch
ns5.nine.ch

and is probably hosted by Nine Internet Solutions AG. See the full list of other websites hosted by Nine Internet Solutions AG.

The highest website klett.ch position in Alexa rank database was 38483 and the lowest rank position was 999924. Current position of klett.ch in Alexa rank database is 860035.

Desktop speed score of klett.ch (36/100) is better than the results of 12% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of klett.ch (68/100) is better than the results of 19.67% of other sites and means that the page is not mobile-friendly.

Mobile speed score of klett.ch (51/100) is better than the results of 35.73% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

klett.ch 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.

klett.ch 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.

Requests of this client are not permitted. Please use https://www.nic.ch/whois/ for queries.

klett.ch server information

Servers Location

klett.ch desktop page speed rank

Last tested: 2019-07-06

Desktop Speed Bad

36/100

klett.ch Desktop Speed Test Quick Summary

priority - 175Optimize images

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

Optimize the following images to reduce their size by 1.7MiB (83% reduction).

Compressing and resizing https://downloads.klett.ch/uploads/images/news/zwe…pulstag_1387x780px.jpg could save 453.7KiB (94% reduction).
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Compressing and resizing https://downloads.klett.ch/uploads/images/infosite…nstaltungen_teaser.jpg could save 49.4KiB (80% reduction).
Compressing and resizing https://downloads.klett.ch/uploads/images/infosites/Shop_Teaser.jpg could save 45.8KiB (86% reduction).

priority - 8Leverage 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:

https://downloads.klett.ch/uploads/images/infosite…g-Nr.-2-2019-Cover.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/infosites/Lehrwerke_Teaser_2.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/infosites/Shop_Teaser.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/infosite…l-klett-und-balmer.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/infosite…nstaltungen_teaser.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/news/aus…a-klett-und-balmer.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/news/ver…e-klett-und-balmer.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/news/zwe…pulstag_1387x780px.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/textbook…1-klett-und-balmer.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/textbook…a-klett-und-balmer.jpg (expiration not specified)
https://downloads.klett.ch/uploads/images/textbook…e-klett-und-balmer.jpg (expiration not specified)
https://matomo.klett.ch/matomo.js (expiration not specified)
https://www.klett.ch/assets/fonts/54895d2f1dff5120d7230bd076c94022.woff (expiration not specified)
https://www.klett.ch/assets/fonts/83d7bbaf49675f590cff90ced079a208.woff (expiration not specified)
https://www.klett.ch/assets/fonts/8d83ea70a34f9f0c9b9a5cd27a9361e6.woff (expiration not specified)
https://www.klett.ch/assets/vendor/fontfaceobserver.js (expiration not specified)

priority - 7Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://klett.ch/
http://www.klett.ch/
https://www.klett.ch/

priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://www.klett.ch/assets/klt-ui.css?v=0

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 917B (11% reduction).

Minifying https://www.klett.ch/ could save 917B (11% reduction) after compression.

klett.ch Desktop Resource Breakdown

Total Resources	24
Number of Hosts	4
Static Resources	16
JavaScript Resources	3
CSS Resources	1

klett.ch mobile page speed rank

Last tested: 2017-05-20

Mobile Speed Bad

51/100

klett.ch Mobile Speed Test Quick Summary

priority - 46Leverage 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:

https://www.klett.ch/__we_thumbs__/18943_14_978-3-264-83987-6.jpg (expiration not specified)
https://www.klett.ch/__we_thumbs__/25949_14_978-3-264-84191-6.jpg (expiration not specified)
https://www.klett.ch/__we_thumbs__/27580_14_elemente.jpg (expiration not specified)
https://www.klett.ch/bilder/aktuell/startseite/2017/50jahre-klett_rot.jpg (expiration not specified)
https://www.klett.ch/bilder/aktuell/startseite/2017/kreschendo_7-9.jpg (expiration not specified)
https://www.klett.ch/bilder/header/startseite/50jahre_headergrafik.jpg (expiration not specified)
https://www.klett.ch/bilder/header/startseite/didacta_2016.jpg (expiration not specified)
https://www.klett.ch/bilder/header/startseite/head…rialien_startseite.png (expiration not specified)
https://www.klett.ch/bilder/header/startseite/lehr…_header_startseite.jpg (expiration not specified)
https://www.klett.ch/bilder/header/startseite/mengerabatt-banner.jpg (expiration not specified)
https://www.klett.ch/bilder/pons/PONS_Logo-klein.jpg (expiration not specified)
https://www.klett.ch/css/7.screen.css (expiration not specified)
https://www.klett.ch/css/print.css (expiration not specified)
https://www.klett.ch/css/shadowbox.css (expiration not specified)
https://www.klett.ch/img/ac_bottom.png (expiration not specified)
https://www.klett.ch/img/ac_cover_focus.png (expiration not specified)
https://www.klett.ch/img/bg_black_alpha_20.png (expiration not specified)
https://www.klett.ch/img/bg_body_sitemap.jpg (expiration not specified)
https://www.klett.ch/img/bg_button_ac.gif (expiration not specified)
https://www.klett.ch/img/bg_foot_sitemap.jpg (expiration not specified)
https://www.klett.ch/img/bg_klett_content.jpg (expiration not specified)
https://www.klett.ch/img/bg_klett_header.png (expiration not specified)
https://www.klett.ch/img/bg_klett_overlay_2.png (expiration not specified)
https://www.klett.ch/img/bg_klett_page.jpg (expiration not specified)
https://www.klett.ch/img/bt_klett_login.png (expiration not specified)
https://www.klett.ch/img/icon_arrow.gif (expiration not specified)
https://www.klett.ch/img/icon_condition_a.png (expiration not specified)
https://www.klett.ch/img/icon_minishop.png (expiration not specified)
https://www.klett.ch/img/icon_more.png (expiration not specified)
https://www.klett.ch/img/icon_print.png (expiration not specified)
https://www.klett.ch/img/logo_print.gif (expiration not specified)
https://www.klett.ch/img/logo_web.jpg (expiration not specified)
https://www.klett.ch/img/slider_arrow_left.png (expiration not specified)
https://www.klett.ch/img/slider_arrow_right.png (expiration not specified)
https://www.klett.ch/img/title_klett_shop.png (expiration not specified)
https://www.klett.ch/img/title_site_company.png (expiration not specified)
https://www.klett.ch/img/title_site_customer.png (expiration not specified)
https://www.klett.ch/img/title_site_shop.png (expiration not specified)
https://www.klett.ch/js/html5media.min.js (expiration not specified)
https://www.klett.ch/js/jquery.autocomplete.js (expiration not specified)
https://www.klett.ch/js/jquery.carousel.js (expiration not specified)
https://www.klett.ch/js/jquery.catalog.js (expiration not specified)
https://www.klett.ch/js/jquery.colorize.js (expiration not specified)
https://www.klett.ch/js/jquery.condition.js (expiration not specified)
https://www.klett.ch/js/jquery.easing.1.3.js (expiration not specified)
https://www.klett.ch/js/jquery.expandable.js (expiration not specified)
https://www.klett.ch/js/jquery.latest.min.js (expiration not specified)
https://www.klett.ch/js/jquery.productbrowser.js (expiration not specified)
https://www.klett.ch/js/livebook.js (expiration not specified)
https://www.klett.ch/js/shadowbox.js (expiration not specified)
https://www.klett.ch/k50j/static/img/logo-50.png (expiration not specified)
https://www.klett.ch/k50j/static/img/slogan_klett50jahre.png (expiration not specified)
https://www.klett.ch/k50j/static/js/bootstrap.min.js (expiration not specified)
https://www.klett.ch/thumbnail/120/0/mediafiles/cover/978-3-12-525201-1.jpg (expiration not specified)
https://www.klett.ch/thumbnail/120/0/mediafiles/cover/978-3-12-592302-7.jpg (expiration not specified)
https://www.klett.ch/webshop/static/3thparty/bowser.min.js (expiration not specified)
https://www.klett.ch/webshop/static/3thparty/spin.min.js (expiration not specified)
https://www.klett.ch/webshop/static/js/ga.js (expiration not specified)
https://www.klett.ch/webshop/static/js/jquery/Basket.js (expiration not specified)
https://www.klett.ch/webshop/static/js/jquery/Lightbox.js (expiration not specified)
https://www.klett.ch/webshop/static/js/jquery/Spinner.js (expiration not specified)
https://ssl.google-analytics.com/ga.js (2 hours)

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 19 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://www.klett.ch/js/jquery.latest.min.js
https://www.klett.ch/js/jquery.easing.1.3.js
https://www.klett.ch/js/jquery.colorize.js
https://www.klett.ch/js/jquery.catalog.js
https://www.klett.ch/js/jquery.condition.js
https://www.klett.ch/js/jquery.autocomplete.js
https://www.klett.ch/js/jquery.expandable.js
https://www.klett.ch/js/jquery.productbrowser.js
https://www.klett.ch/js/jquery.carousel.js
https://www.klett.ch/js/livebook.js
https://www.klett.ch/js/html5media.min.js
https://www.klett.ch/k50j/static/js/bootstrap.min.js
https://www.klett.ch/webshop/static/3thparty/bowser.min.js
https://www.klett.ch/webshop/static/js/ga.js
https://www.klett.ch/webshop/static/js/jquery/Lightbox.js
https://www.klett.ch/webshop/static/3thparty/spin.min.js
https://www.klett.ch/webshop/static/js/jquery/Spinner.js
https://www.klett.ch/webshop/static/js/jquery/Basket.js
https://www.klett.ch/js/shadowbox.js

Optimize CSS Delivery of the following:

https://www.klett.ch/css/7.screen.css
https://www.klett.ch/css/shadowbox.css

priority - 25Optimize images

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

Optimize the following images to reduce their size by 245KiB (56% reduction).

Compressing https://www.klett.ch/bilder/header/startseite/didacta_2016.jpg could save 112.6KiB (72% reduction).
Compressing https://www.klett.ch/bilder/header/startseite/50jahre_headergrafik.jpg could save 39.7KiB (56% reduction).
Compressing https://www.klett.ch/bilder/pons/PONS_Logo-klein.jpg could save 21.7KiB (92% reduction).
Compressing https://www.klett.ch/thumbnail/120/0/mediafiles/cover/978-3-12-525201-1.jpg could save 16.7KiB (67% reduction).
Compressing https://www.klett.ch/thumbnail/120/0/mediafiles/cover/978-3-12-592302-7.jpg could save 14.8KiB (71% reduction).
Compressing https://www.klett.ch/bilder/header/startseite/mengerabatt-banner.jpg could save 13.4KiB (24% reduction).
Compressing https://www.klett.ch/bilder/header/startseite/lehr…_header_startseite.jpg could save 12.4KiB (23% reduction).
Compressing https://www.klett.ch/img/slider_arrow_right.png could save 2.8KiB (96% reduction).
Compressing https://www.klett.ch/img/slider_arrow_left.png could save 2.8KiB (96% reduction).
Compressing https://www.klett.ch/img/bg_black_alpha_20.png could save 2.7KiB (97% reduction).
Compressing https://www.klett.ch/img/bg_body_sitemap.jpg could save 1.9KiB (35% reduction).
Compressing https://www.klett.ch/img/bg_klett_overlay_2.png could save 1.6KiB (30% reduction).
Compressing https://www.klett.ch/k50j/static/img/slogan_klett50jahre.png could save 1KiB (25% reduction).
Compressing https://www.klett.ch/img/logo_web.jpg could save 937B (31% reduction).

priority - 1Reduce server response time

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 5.1KiB (47% reduction).

Minifying https://www.klett.ch/js/jquery.productbrowser.js could save 2.1KiB (47% reduction) after compression.
Minifying https://www.klett.ch/js/jquery.autocomplete.js could save 1.3KiB (48% reduction) after compression.
Minifying https://www.klett.ch/js/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
Minifying https://www.klett.ch/js/jquery.colorize.js could save 628B (35% reduction) after compression.

priority - 0Minify 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 2.3KiB (20% reduction).

Minifying https://www.klett.ch/css/7.screen.css could save 1.5KiB (19% reduction) after compression.
Minifying https://www.klett.ch/css/print.css could save 770B (22% reduction) after compression.

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 1.3KiB (15% reduction).

Minifying https://www.klett.ch/ could save 1.3KiB (15% reduction) after compression.

klett.ch Mobile Resource Breakdown

Total Resources	73
Number of Hosts	5
Static Resources	66
JavaScript Resources	22
CSS Resources	5

klett.ch mobile page usability

Last tested: 2017-05-20

Mobile Usability Medium

68/100

klett.ch Mobile Usability Test Quick Summary

priority - 25Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

Aktuell renders only 5 pixels tall (12 CSS pixels).

Veranstaltungen and 6 others render only 5 pixels tall (12 CSS pixels).

Erwachsenenbildung and 4 others render only 5 pixels tall (14 CSS pixels).

«Banksy et moi…kundarstufe II and 6 others render only 5 pixels tall (12 CSS pixels).

Trotz finanzie…em Niveau B1+. and 10 others render only 5 pixels tall (12 CSS pixels).

zum Begleitband and 5 others render only 5 pixels tall (12 CSS pixels).

«Mein Sprachschlüssel» and 2 others render only 5 pixels tall (12 CSS pixels).

978-3-12-592302-7 and 3 others render only 5 pixels tall (12 CSS pixels).
| and 1 others render only 5 pixels tall (12 CSS pixels).

Stellenangebot and 2 others render only 5 pixels tall (12 CSS pixels).

Passwort: and 1 others render only 5 pixels tall (13 CSS pixels).

Als Neukunde/-in anmelden and 1 others render only 5 pixels tall (13 CSS pixels).

NEU: Unser digitales Angebot and 4 others render only 5 pixels tall (12 CSS pixels).

Auflistung all…ken finden Sie and 17 others render only 4 pixels tall (11 CSS pixels).

www.klett.ch/digital and 2 others render only 4 pixels tall (11 CSS pixels).

Projektleiter/…ung Mathematik and 1 others render only 4 pixels tall (11 CSS pixels).

Lageplan und Öffnungszeiten and 1 others render only 4 pixels tall (11 CSS pixels).

Klett und Balmer AG renders only 4 pixels tall (11 CSS pixels).

Über den Klett…Balmer Verlag and 17 others render only 4 pixels tall (11 CSS pixels).

priority - 13Size 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 id="k50j-close" href="javascript:k50jClose();"></a> is close to 1 other tap targets.

The tap target <a href="/de/aktuell/50…b/aktionen.php">Mai-Aktion</a> is close to 1 other tap targets.

The tap target <a href="/index.php">Aktuell</a> is close to 2 other tap targets.

The tap target <a href="/de/hauptlehrwerke/index.php">Hauptlehrwerke</a> and 6 others are close to other tap targets.

The tap target <input id="ac-query" type="text" name="search"> is close to 1 other tap targets.

The tap target <input type="submit" name="send"> is close to 1 other tap targets.

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

The tap target <a href="/Katalog/Sekun…5/shopartikel/" class="more">zum Begleitband</a> and 2 others are close to other tap targets.

The tap target <input type="text" name="quantity"> and 1 others are close to other tap targets.
The tap target <input type="submit"> and 1 others are close to other tap targets.

The tap target <input id="username" type="text" name="username"> and 1 others are close to other tap targets.

The tap target <label for="username">E-Mail:</label> and 1 others are close to other tap targets.

The tap target <input type="submit" class="loginbutton"> is close to 2 other tap targets.

The tap target <a href="/webshop/reset" class="lightbox arrow">Passwort vergessen?</a> and 1 others are close to other tap targets.

The tap target <a href="/de/verlag/off…iter_mathe.php" class="more">Projektleiter/…ung Mathematik</a> is close to 1 other tap targets.

The tap target <a href="/webshop/account">Mein Konto</a> and 16 others are close to other tap targets.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

klett.ch HTML validation

Errors

A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.

Line: 6 Column: 3 - 71
".../title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <me..."

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Line: 246 Column: 30 - 158
"...s="issue"><img src="/bilder/landingpage/login-pass/erklaervideo_loginpass.jpg" class="left" alt="" width="120" height="172" align="left" /><p><b>..." Line: 282 Column: 76 - 192
"...ndex.php"><img src="/__we_thumbs__/27788_14_978-3-264-84060-5.jpg" class="left" alt="" height="170" align="left" width="120" /></a>«Ç..." Line: 292 Column: 70 - 192
"...ndex.php"><img src="/bilder/aktuell/startseite/2018/sprachstarken_6.jpg" class="left" alt="" height="229" width="120" align="left" /></a><p..." Line: 304 Column: 85 - 208
"...ndex.php"><img src="/bilder/aktuell/startseite/2018/mein_deutschheft.jpg" class="left" alt="" height="241" align="left" width="120" /></a><p..." Line: 317 Column: 81 - 186
"...ndex.php"><img src="/__we_thumbs__/28308_14_prisma.jpg" class="left" alt="" height="160" align="left" width="120" /></a>«P..." Line: 326 Column: 83 - 197
"...efte.php"><img src="/bilder/aktuell/startseite/2018/impulse.jpg" class="left" alt="" height="281" align="left" width="120" /></a><p..." Line: 343 Column: 95 - 215
"...rld%2B1/"><img src="/bilder/aktuell/startseite/2018/nw_word_cards.jpg" class="left" alt="" width="120" height="242" align="left" /></a>«N..." Line: 468 Column: 65 - 156
"...2013.php"><img src="/bilder/pons/PONS_Logo-klein.jpg" alt="" height="61" width="120" align="middle" /></a><b..."

Malformed byte sequence: “e4”.

Line: 277 Column: - 83
"......" Line: 380 Column: - 83
"......" Line: 409 Column: - 83
"......"

Attribute “pubdate” not allowed on element “time” at this point.

Line: 277 Column: 36 - 77
"...ntlich am <time datetime="2018-03-16T15:19" pubdate>16. M�..." Line: 380 Column: 36 - 77
"...ntlich am <time datetime="2018-03-16T15:19" pubdate>16. M�..." Line: 409 Column: 36 - 77
"...ntlich am <time datetime="2018-03-16T15:19" pubdate>16. M�..."

Bad value “contentinfo” for attribute “role” on element “nav”.

Line: 530 Column: 4 - 40
"...emap"> <nav class="site" role="contentinfo"> ..."

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

Line: 608 Column: 22 - 471
"...<noscript><img src="http://www.google-analytics.com/__utm.gif?utmwv=1&utmn=4453819180&utmsr=-&utmsc=-&utmul=-&utmje=0&utmfl=-&utmdt=-&utmhn=https//www.klett.ch&utmr=&utmp=/index.php?nojs=1&utmac=UA-761133-1&utmcc=__utma%3D85881950.1550923631.1521401077.1521401077.1521401077.2%3B%2B__utmb%3D85881950%3B%2B__utmc%3D85881950%3B%2B__utmz%3D85881950.1521401077.2.2.utmccn%3D(direct)%7Cutmcsr%3D(direct)%7Cutmcmd%3D(none)%3B%2B__utmv%3D85881950.-%3B" /></noscript> <!-- P..."

Warnings

The “banner” role is unnecessary for element “header”.

Line: 103 Column: 4 - 41
"...ents"> <header id="pageheader" role="banner"> <..."

The “navigation” role is unnecessary for element “nav”.

Line: 123 Column: 5 - 39
"...span> <nav class="top" role="navigation"> ..." Line: 153 Column: 6 - 44
"... <nav class="catalog" role="navigation"> ..."

Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).

Line: 144 Column: 7 - 10
"...h"> <h1>Katalo..." Line: 244 Column: 8 - 11
"... <h1>Willko..." Line: 429 Column: 16 - 34
"... <header><h1 class="orange">NEU: U..." Line: 439 Column: 16 - 34
"... <header><h1 class="orange">Gesamt..." Line: 449 Column: 9 - 27
"...> <h1 class="orange">Attrak..." Line: 467 Column: 16 - 32
"... <header><h1 class="blue">Partne..." Line: 479 Column: 16 - 34
"... <header><h1 class="orange">Ausste..." Line: 495 Column: 9 - 27
"...> <h1 class="orange">Kontak..." Line: 533 Column: 6 - 9
"...op"> <h1>Katalo..." Line: 545 Column: 6 - 9
"...ny"> <h1>Verlag..." Line: 556 Column: 6 - 9
"...er"> <h1>Kunden..."

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

Line: 246 Column: 7 - 29
"...--> <section class="issue"><img s..." Line: 259 Column: 7 - 29
"...-> <section class="issue"> ..." Line: 282 Column: 7 - 29
"...-> <section class="issue"><p><b>..." Line: 292 Column: 7 - 29
".../> <section class="issue"><a hre..." Line: 304 Column: 7 - 29
".../> <section class="issue"><a hre..." Line: 317 Column: 7 - 29
".../> <section class="issue"><p><b>..." Line: 326 Column: 7 - 29
".../> <section class="issue"><a hre..." Line: 343 Column: 7 - 29
".../> <section class="issue"><p><b>..." Line: 358 Column: 7 - 29
"...-> <section class="issue"> ..." Line: 387 Column: 7 - 29
"...-> <section class="issue"> ..." Line: 137 Column: 4 - 34
"...-> <section id="page" role="main"> ..." Line: 529 Column: 3 - 24
"...r /> <section id="sitemap"> <n..."

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

Line: 420 Column: 7 - 35
"... <article class="teaser gray"><ifram..."

This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.

Line: 2 Column: 16 - 22
"...type html> <html class="desktop"> <hea..."

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klett.ch 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.

klett.ch 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.

KLETT.CH Startseite - Klett und Balmer Verlag

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klett.ch desktop page speed rank

klett.ch Desktop Speed Test Quick Summary

priority - 175Optimize images

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

Optimize the following images to reduce their size by 1.7MiB (83% reduction).

priority - 8Leverage 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 - 7Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 917B (11% reduction).

klett.ch Desktop Resource Breakdown

klett.ch mobile page speed rank

klett.ch Mobile Speed Test Quick Summary

priority - 46Leverage 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 - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 19 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 25Optimize images

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

Optimize the following images to reduce their size by 245KiB (56% reduction).

priority - 1Reduce server response time

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 5.1KiB (47% reduction).

priority - 0Minify 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 2.3KiB (20% reduction).

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

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klett.ch Mobile Resource Breakdown

klett.ch mobile page usability

klett.ch Mobile Usability Test Quick Summary

priority - 25Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

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priority - 13Size 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.

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priority - 10Configure the viewport

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klett.ch HTML validation

Errors

A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Malformed byte sequence: “e4”.

Attribute “pubdate” not allowed on element “time” at this point.

Bad value “contentinfo” for attribute “role” on element “nav”.

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

Warnings

The “banner” role is unnecessary for element “header”.

The “navigation” role is unnecessary for element “nav”.

Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).

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

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

This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.

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klett.ch Ping

klett.ch TRACEROUTE