Tools & Wizards About Us
boltshauser.info screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

boltshauser.info

Boltshauser Architekten AG • Architekturbüro in Zürich & München

Page Load Speed

7 sec in total

First Response

1.5 sec

Resources Loaded

5.4 sec

Page Rendered

122 ms

boltshauser.info screenshot

About Website

Welcome to boltshauser.info homepage info - get ready to check Boltshauser best content right away, or after learning these important things about boltshauser.info

Zeitgenössische, preisgekrönte Architektur von Roger Boltshauser Architekten • Erfahren Sie mehr über uns.

Visit boltshauser.info

Key Findings

We analyzed Boltshauser.info page load time and found that the first response time was 1.5 sec and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

boltshauser.info performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.903

3/100

15%

TTI (Time to Interactive)

Value7.4 s

49/100

10%

Network Requests Diagram

boltshauser.info

1518 ms

style.min.css

100 ms

style.min.css

196 ms

style.css

289 ms

splide.min.css

294 ms

Our browser made a total of 115 requests to load all elements on the main page. We found that 99% of them (114 requests) were addressed to the original Boltshauser.info, 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Boltshauser.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 181.0 kB (20%)

Content Size

893.1 kB

After Optimization

712.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Boltshauser.info main page is 893.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 620.8 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 152.7 kB

  • Original 181.8 kB
  • After minification 177.6 kB
  • After compression 29.1 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 152.7 kB or 84% of the original size.

Image Optimization

-2%

Potential reduce by 9.3 kB

  • Original 620.8 kB
  • After minification 611.5 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Boltshauser images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 8.6 kB

  • Original 59.3 kB
  • After minification 58.7 kB
  • After compression 50.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 8.6 kB or 14% of the original size.

CSS Optimization

-33%

Potential reduce by 10.4 kB

  • Original 31.2 kB
  • After minification 30.5 kB
  • After compression 20.8 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Boltshauser.info needs all CSS files to be minified and compressed as it can save up to 10.4 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (18%)

Requests Now

112

After Optimization

92

  • Images
  • JavaScript
  • CSS

The browser has sent 112 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Boltshauser. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

boltshauser.info

boltshauser.info

1518 ms

style.min.css

style.min.css

100 ms

style.min.css

style.min.css

196 ms

style.css

style.css

289 ms

splide.min.css

splide.min.css

294 ms

jquery.lazyloadxt.fadein.css

jquery.lazyloadxt.fadein.css

292 ms

a3_lazy_load.min.css

a3_lazy_load.min.css

293 ms

jquery.min.js

jquery.min.js

386 ms

jquery-migrate.min.js

jquery-migrate.min.js

294 ms

language-cookie.js

language-cookie.js

385 ms

splide.min.js

splide.min.js

386 ms

main.js

main.js

381 ms

bha_cload.js

bha_cload.js

381 ms

jquery.lazyloadxt.extra.min.js

jquery.lazyloadxt.extra.min.js

383 ms

jquery.lazyloadxt.srcset.min.js

jquery.lazyloadxt.srcset.min.js

479 ms

jquery.lazyloadxt.extend.js

jquery.lazyloadxt.extend.js

477 ms

js

js

36 ms

style-fonts.css

style-fonts.css

195 ms

style-proto.css

style-proto.css

195 ms

style-blocks.css

style-blocks.css

196 ms

style-blocks-mobile.css

style-blocks-mobile.css

197 ms

style-yk.css

style-yk.css

292 ms

style-mobile.css

style-mobile.css

291 ms

boltshauser-architekten.svg

boltshauser-architekten.svg

99 ms

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98 ms

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101 ms

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103 ms

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102 ms

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102 ms

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195 ms

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Boltshauser-Architekten-Hochhaus-Zwhatt-Areal-Skizze-Roger-Boltshauser-170x226.jpg

196 ms

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198 ms

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198 ms

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199 ms

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197 ms

Boltshauser-Architekten-Kloster-Ingenbohl-Skizze-170x235.jpg

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293 ms

Boltshauser-Architekten-Areal-Wiesental-St-Gallen-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Areal-Wiesental-St-Gallen-Skizze-Roger-Boltshauser-170x227.jpg

294 ms

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292 ms

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Boltshauser-Architekten-Winterthurerstrasse-Visualisierung-02-170x146.jpg

295 ms

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293 ms

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Boltshauser-Architekten-Kraftwerks-Cham-04-170x227.jpg

294 ms

Boltshauser-Architekten-Wettbewerb-BIS-site-development-Basel-Skizze-170x230.jpg

Boltshauser-Architekten-Wettbewerb-BIS-site-development-Basel-Skizze-170x230.jpg

389 ms

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Boltshauser-Architekten-Neubau-Mehrfamilienhaus-Kilchberg-1-170x239.jpg

389 ms

Boltshauser-Architekten-Wettbewerb-Wankdorfcity-Bern-Visualisierung-5-170x251.jpg

Boltshauser-Architekten-Wettbewerb-Wankdorfcity-Bern-Visualisierung-5-170x251.jpg

391 ms

Boltshauser-Architekten-Wettbewerb-Laborneubau-Haus-6-Basel-Visualisierung-6-170x170.jpg

Boltshauser-Architekten-Wettbewerb-Laborneubau-Haus-6-Basel-Visualisierung-6-170x170.jpg

389 ms

Boltshauser-Architekten-Campus-Horw-Modell-170x227.jpg

Boltshauser-Architekten-Campus-Horw-Modell-170x227.jpg

391 ms

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Boltshauser-Architekten-Akustische-Figuren-Engadin-170x135.png

390 ms

Boltshauser-Architekten-Ofenturm-Ziegelei-Museum-Skizze-Roger-Boltshauser-170x237.jpg

Boltshauser-Architekten-Ofenturm-Ziegelei-Museum-Skizze-Roger-Boltshauser-170x237.jpg

485 ms

Boltshauser-Architekten-Buero-Infrastrukturgebaeude-Wasserwerke-Zug-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Buero-Infrastrukturgebaeude-Wasserwerke-Zug-Skizze-Roger-Boltshauser-170x227.jpg

486 ms

Boltshauser-Architekten-Willy-Brand-Strasse-Modell-170x227.jpg

Boltshauser-Architekten-Willy-Brand-Strasse-Modell-170x227.jpg

488 ms

Boltshauser-Architekten-Schweizer-Pavillon-Architekturbiennale-Venedig-2020-Skizze-170x227.jpg

Boltshauser-Architekten-Schweizer-Pavillon-Architekturbiennale-Venedig-2020-Skizze-170x227.jpg

488 ms

Boltshauser-Architekten-Nikolai-Insel-Fassadenmodell-170x227.jpg

Boltshauser-Architekten-Nikolai-Insel-Fassadenmodell-170x227.jpg

489 ms

Boltshauser-Architekten-Mock-up-Sitterwerk-StGallen-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Mock-up-Sitterwerk-StGallen-Skizze-Roger-Boltshauser-170x227.jpg

488 ms

Boltshauser-Architekten-Sanierung-Flachbauten-Hirzenbach-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Sanierung-Flachbauten-Hirzenbach-Skizze-Roger-Boltshauser-170x227.jpg

582 ms

Boltshauser-Architekten-Primarschule-Kraemeracker-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Primarschule-Kraemeracker-Skizze-Roger-Boltshauser-170x227.jpg

638 ms

Boltshauser-Architekten-Ozeanium-Zoo-Basel-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Ozeanium-Zoo-Basel-Skizze-Roger-Boltshauser-170x227.jpg

637 ms

Boltshauser-Architekten-Baufeld-F-Europaallee-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Baufeld-F-Europaallee-Skizze-Roger-Boltshauser-170x227.jpg

584 ms

Boltshauser-Architekten-Feldbrandofen-Ziegeleimuseum-Cham-Aufbau-2-170x227.jpg

Boltshauser-Architekten-Feldbrandofen-Ziegeleimuseum-Cham-Aufbau-2-170x227.jpg

637 ms

Boltshauser-Architekten-Generalsanierung-Gasteig-Modell-170x227.jpg

Boltshauser-Architekten-Generalsanierung-Gasteig-Modell-170x227.jpg

639 ms

UniversNextW1G-Regular.otf

UniversNextW1G-Regular.otf

868 ms

UniversNextW1G-Bold.otf

UniversNextW1G-Bold.otf

773 ms

Boltshauser-Architekten-Sanierung-Geschaeftshaus-Bleicherweg-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Sanierung-Geschaeftshaus-Bleicherweg-Skizze-Roger-Boltshauser-170x227.jpg

685 ms

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Boltshauser-Architekten-Linkeroever-Plan-2-scaled-170x227.jpg

683 ms

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684 ms

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692 ms

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Boltshauser-Architekten-Case-Study-Steel-House-Skizze-Roger-Boltshauser-170x227.jpg

707 ms

Boltshauser-Architekten-Geissweid-Hirschen-Plan-Uebersicht-170x227.jpg

Boltshauser-Architekten-Geissweid-Hirschen-Plan-Uebersicht-170x227.jpg

706 ms

Boltshauser-Architekten-Schweizer-Pavillon-Biennale-2018-170x227.jpg

Boltshauser-Architekten-Schweizer-Pavillon-Biennale-2018-170x227.jpg

704 ms

Boltshauser-Architekten-Entwicklung-Areals-Unicenterparkplatz-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Entwicklung-Areals-Unicenterparkplatz-Skizze-Roger-Boltshauser-170x227.jpg

706 ms

Boltshauser-Architekten-Sanierung-Villa-Aabach-Innenraum-Farbe-170x227.jpg

Boltshauser-Architekten-Sanierung-Villa-Aabach-Innenraum-Farbe-170x227.jpg

783 ms

Boltshauser-Architekten-Wohnueberbauung-Wuelflingen-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Wohnueberbauung-Wuelflingen-Skizze-Roger-Boltshauser-170x227.jpg

785 ms

Boltshauser-Architekten-Umbau-Sanierung-Pfarrhaus-Trub-Tueren-170x227.jpg

Boltshauser-Architekten-Umbau-Sanierung-Pfarrhaus-Trub-Tueren-170x227.jpg

690 ms

Boltshauser-Architekten-Gestaltungsplan-Papieri-Areal-Cham-170x227.jpg

Boltshauser-Architekten-Gestaltungsplan-Papieri-Areal-Cham-170x227.jpg

689 ms

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Boltshauser-Architekten-Wohnungsbau-Lenzburg-Skizze-Roger-Boltshauser-170x227.jpg

694 ms

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Boltshauser-Architekten-Schulhaus-Kopfholz-Skizze-Roger-Boltshauser-170x227.jpg

766 ms

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Boltshauser-Architekten-Wohnhochhaus-Hirzenbach-Skizze-Roger-Boltshauser-170x227.jpg

773 ms

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Boltshauser-Architekten-Quartiersentwicklung-Grosser-Burstah-3-Modell-170x261.jpg

781 ms

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Boltshauser-Architekten-Amt-Umwelt-Energie-Modell-170x227.jpg

688 ms

Boltshauser-Architekten-Haus-am-Turm-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Haus-am-Turm-Skizze-Roger-Boltshauser-170x227.jpg

687 ms

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Boltshauser-Architekten-Schulpavillon-Allenmoos-II-Skizze-Roger-Boltshauser-170x227.jpg

692 ms

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Boltshauser-Architekten-Glatttalstudie-1-170x227.jpg

767 ms

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Boltshauser-Architekten-Umbau-Schulanlage-Goenhard-Skizze-Roger-Boltshauser-170x227.jpg

773 ms

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Boltshauser-Architekten-Ateliergebaeude-Dubsstrasse-Skizze-Roger-Boltshauser-170x227.jpg

782 ms

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Boltshauser-Architekten-Badehaus-Hotel-Tamina-Skizze-Roger-Boltshauser-scaled-170x227.jpg

687 ms

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Boltshauser-Architekten-Haus-Sutter-Gipsmodell-3-170x227.jpg

686 ms

Boltshauser-Architekten-Haus-Rauch-Skizze-Roger-Boltshauser-170x227.jpg

Boltshauser-Architekten-Haus-Rauch-Skizze-Roger-Boltshauser-170x227.jpg

691 ms

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Boltshauser-Architekten-Schulanlage-Hirzenbach-Skizze-Roger-Boltshauser-170x227.jpg

767 ms

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Boltshauser-Architekten-Rathaus-St-Gallen-Skizze-Roger-Boltshauser-170x227.jpg

773 ms

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Boltshauser-Architekten-Schulhaus-Kronenwiese-Skizze-Roger-Boltshauser-170x227.jpg

780 ms

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Boltshauser-Architekten-Geraetehaeser-Zielturm-Sihlhoelzli-Skizze-Roger-Boltshauser-170x227.jpg

687 ms

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Boltshauser-Architekten-Dreifachsporthalle-Waldegg-Skizze-Roger-Boltshauser-170x227.jpg

687 ms

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Boltshauser-Architekten-Semperpreis-Ausstellung-Preisverleihung-170x115.jpg

638 ms

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Boltshauser-Architekten-IMMO-Healthcare-170x240.jpg

713 ms

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Boltshauser-Architekten-Architekturforum-Bern-Vortrag-1-170x120.jpg

721 ms

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Boltshauser-Architekten-Vortrag-Roger-Boltshauser-TUM-Muenchen.jpeg-170x241.jpg

720 ms

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Boltshauser-Architekten-Solaris-Diskussion.jpg-170x100.jpg

582 ms

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585 ms

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Roger-Boltshauser-Rede-an-die-Architektur-Bielefeld-170x240.jpg

588 ms

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Boltshauser-Architekten-Vortrag-TU-Wien-Mark-Inderbitzin-170x240.jpg

660 ms

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Boltshauser-Architekten-GLC-Eroeffnung-170x241.jpg

585 ms

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563 ms

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SEMPER-Preis-Logo-170x118.png

564 ms

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568 ms

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Boltshauser-Architekten-Holcim-Talks-170x213.jpeg

572 ms

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Boltshauser-Architekten-TU-Dortmund-170x302.jpg

589 ms

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Boltshauser-Architekten-StA-Farnbuehlpark-Wohlen-Visualisierung-04-170x138.jpg

575 ms

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580 ms

Boltshauser-Architekten-Aus-Boden-Gestampft-04-170x227.jpg

Boltshauser-Architekten-Aus-Boden-Gestampft-04-170x227.jpg

581 ms

Boltshauser-Architekten-SAY-ZAZ-01-170x241.jpg

Boltshauser-Architekten-SAY-ZAZ-01-170x241.jpg

591 ms

Boltshauser-Architekten-IPZ-170x136.jpg

Boltshauser-Architekten-IPZ-170x136.jpg

587 ms

Boltshauser-Architekten-Book-Launch-Architektur-Machen-170x170.jpg

Boltshauser-Architekten-Book-Launch-Architektur-Machen-170x170.jpg

590 ms

Boltshauser-Architekten-Award360-170x170.jpg

Boltshauser-Architekten-Award360-170x170.jpg

586 ms

Boltshauser-Architekten-Day-of-Drawing-1-170x240.jpg

Boltshauser-Architekten-Day-of-Drawing-1-170x240.jpg

584 ms

Boltshauser-Architekten-Klimahaus-Congress-2024-170x108.png

Boltshauser-Architekten-Klimahaus-Congress-2024-170x108.png

584 ms

Boltshauser-Architekten-Watt-dOr-2024-170x98.jpg

Boltshauser-Architekten-Watt-dOr-2024-170x98.jpg

598 ms

Accessibility Review

boltshauser.info accessibility score

83

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

boltshauser.info best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

boltshauser.info SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Boltshauser.info can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed German language. Our system also found out that Boltshauser.info main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

boltshauser.info

Open Graph data is detected on the main page of Boltshauser. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: