Tools & Wizards About Us
stefanhelling.com screenshot

Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

stefanhelling.com

Stefan Helling | AudioVisual Engineering for Design + Architecture

Page Load Speed

2.8 sec in total

First Response

291 ms

Resources Loaded

2 sec

Page Rendered

553 ms

stefanhelling.com screenshot

About Website

Click here to check amazing Stefan Helling content. Otherwise, check out these important facts you probably never knew about stefanhelling.com

Stefan Helling is a freelance planner and engineer specialized in interactive exhibitions and based in Berlin. He has a background in audiovisual technologies and electronics.

Visit stefanhelling.com

Key Findings

We analyzed Stefanhelling.com page load time and found that the first response time was 291 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

stefanhelling.com performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value2.6 s

97/100

10%

Network Requests Diagram

stefanhelling.com

291 ms

stefanhelling.com

798 ms

ef74e9fa11e3ddab0257094f30121d20.css

108 ms

83db98f488f149f6ee7890efc03e48fb.js

317 ms

5c7d2337911171da78ecc646200bd97d6614260e-01-stefan-helling-iart-hyundai-olympic-pavilion-media-facade1x.jpeg

474 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that all of those requests were addressed to Stefanhelling.com and no external sources were called. The less responsive or slowest element that took the longest time to load (819 ms) belongs to the original domain Stefanhelling.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 47.4 kB (5%)

Content Size

1.0 MB

After Optimization

980.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stefanhelling.com main page is 1.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 887.7 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 29.3 kB

  • Original 35.9 kB
  • After minification 28.6 kB
  • After compression 6.6 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. This page needs HTML code to be minified as it can gain 7.4 kB, which is 21% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 29.3 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 1.0 kB

  • Original 887.7 kB
  • After minification 886.6 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. Stefan Helling images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 12.5 kB

  • Original 86.6 kB
  • After minification 86.6 kB
  • After compression 74.1 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 12.5 kB or 14% of the original size.

CSS Optimization

-25%

Potential reduce by 4.5 kB

  • Original 18.1 kB
  • After minification 18.1 kB
  • After compression 13.6 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. Stefanhelling.com needs all CSS files to be minified and compressed as it can save up to 4.5 kB or 25% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

17

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stefan Helling. According to our analytics all requests are already optimized.

Network Requests Diagram

stefanhelling.com

stefanhelling.com

291 ms

stefanhelling.com

stefanhelling.com

798 ms

ef74e9fa11e3ddab0257094f30121d20.css

ef74e9fa11e3ddab0257094f30121d20.css

108 ms

83db98f488f149f6ee7890efc03e48fb.js

83db98f488f149f6ee7890efc03e48fb.js

317 ms

5c7d2337911171da78ecc646200bd97d6614260e-01-stefan-helling-iart-hyundai-olympic-pavilion-media-facade1x.jpeg

5c7d2337911171da78ecc646200bd97d6614260e-01-stefan-helling-iart-hyundai-olympic-pavilion-media-facade1x.jpeg

474 ms

8d1022c0011a4f49d376874c3d8889fc0dd148c6-01-stefan-helling-thegreeneyl-5670-mann-hummel-filter-museum-led-wall1x.jpeg

8d1022c0011a4f49d376874c3d8889fc0dd148c6-01-stefan-helling-thegreeneyl-5670-mann-hummel-filter-museum-led-wall1x.jpeg

658 ms

ca429cbff4501b98d047d7771f34951e7c0d1e52-01-stefan-helling-thegreeneyl-universal-music-berlin-led-cube1x.jpeg

ca429cbff4501b98d047d7771f34951e7c0d1e52-01-stefan-helling-thegreeneyl-universal-music-berlin-led-cube1x.jpeg

507 ms

ced4ed2c05f3e2d642712ec173c455eed00afd2e-01-stefan-helling-thegreeneyl-unesco-world-natural-heritage-wadden-sea-visitor-center-building1x.jpeg

ced4ed2c05f3e2d642712ec173c455eed00afd2e-01-stefan-helling-thegreeneyl-unesco-world-natural-heritage-wadden-sea-visitor-center-building1x.jpeg

608 ms

68640e6a36bebd49f9205d8d3400b44458e199d5-01-stefan-helling-thegreeneyl-zeiss-museum-of-optics-overview1x.jpeg

68640e6a36bebd49f9205d8d3400b44458e199d5-01-stefan-helling-thegreeneyl-zeiss-museum-of-optics-overview1x.jpeg

508 ms

08bf8fca3aa082a7a609c2ff55100b52f36fba7a-01-artcom-living-cartography-interactive-map-vatnajoekull-visitors1x.jpeg

08bf8fca3aa082a7a609c2ff55100b52f36fba7a-01-artcom-living-cartography-interactive-map-vatnajoekull-visitors1x.jpeg

422 ms

966d118b4149bea6fc77c75faf605a81b1a968f2-01-stefan-helling-artcom-hansol-paper-museum-ink-drops-origin-sheets-breeze1x.jpeg

966d118b4149bea6fc77c75faf605a81b1a968f2-01-stefan-helling-artcom-hansol-paper-museum-ink-drops-origin-sheets-breeze1x.jpeg

528 ms

38dbcd4d4acd8eeeb0e789186638996c74bb0615-01-stefan-helling-artcom-statistics-strip-dhmd-world-map1x.jpeg

38dbcd4d4acd8eeeb0e789186638996c74bb0615-01-stefan-helling-artcom-statistics-strip-dhmd-world-map1x.jpeg

573 ms

9938f94bf8d4fb9f8d28c993b53cec9263af22cf-01-stefan-helling-artcom-aliens-exhibition-china-visitors1x.jpeg

9938f94bf8d4fb9f8d28c993b53cec9263af22cf-01-stefan-helling-artcom-aliens-exhibition-china-visitors1x.jpeg

616 ms

33a1c3db4aaf4b4e82f1cf11b5e80efac9770e13-01-stefan-helling-artcom-60-years-works-multitouch-table1x.jpeg

33a1c3db4aaf4b4e82f1cf11b5e80efac9770e13-01-stefan-helling-artcom-60-years-works-multitouch-table1x.jpeg

613 ms

4e2460a815d61318aa0e78c64f00c0a604078eab-01-stefan-helling-triad-loopoly-interactive-4player-game-exhibit-rendering1x.jpeg

4e2460a815d61318aa0e78c64f00c0a604078eab-01-stefan-helling-triad-loopoly-interactive-4player-game-exhibit-rendering1x.jpeg

633 ms

bf3814a5f60c96a34edafd827700f43505674046-01-stefan-helling-triad-villery-boch-260-years-event-projection-performance1x.jpeg

bf3814a5f60c96a34edafd827700f43505674046-01-stefan-helling-triad-villery-boch-260-years-event-projection-performance1x.jpeg

670 ms

4ba3a913770295980fd256dfc18c287495a6b5e5-01-stefan-helling-triad-z-experience-showroom-stefan-helling-triad-zurich1x.jpeg

4ba3a913770295980fd256dfc18c287495a6b5e5-01-stefan-helling-triad-z-experience-showroom-stefan-helling-triad-zurich1x.jpeg

714 ms

0d24ac95faab8f86dd46c2493312112f8c8f3eaa-01-stefan-helling-triad-kadewe-myth-exhibition-berlin-suspended-picture-frames1x.jpeg

0d24ac95faab8f86dd46c2493312112f8c8f3eaa-01-stefan-helling-triad-kadewe-myth-exhibition-berlin-suspended-picture-frames1x.jpeg

819 ms

5c25b22d60d25ee6071b7ce865816bdb40219175-01-stefan-helling-screensize-me-logo-min1x.png

5c25b22d60d25ee6071b7ce865816bdb40219175-01-stefan-helling-screensize-me-logo-min1x.png

719 ms

shfolio-icons.woff

shfolio-icons.woff

455 ms

Accessibility Review

stefanhelling.com accessibility score

59

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

stefanhelling.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

stefanhelling.com SEO score

100

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stefanhelling.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Stefanhelling.com 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

stefanhelling.com

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