Tools & Wizards About Us
wupperinst.org screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

wupperinst.org

Home - Wuppertal Institut für Klima, Umwelt, Energie

Page Load Speed

3.3 sec in total

First Response

306 ms

Resources Loaded

2.2 sec

Page Rendered

831 ms

wupperinst.org screenshot

About Website

Click here to check amazing Wupperinst content for Germany. Otherwise, check out these important facts you probably never knew about wupperinst.org

Das Wuppertal Institut erforscht und entwickelt Leitbilder, Strategien und Instrumente für Übergänge zu einer nachhaltigen Entwicklung. Im Zentrum stehen Ressourcen-, Klima- und Energieherausforderung...

Visit wupperinst.org

Key Findings

We analyzed Wupperinst.org page load time and found that the first response time was 306 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

wupperinst.org performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.794

5/100

15%

TTI (Time to Interactive)

Value6.3 s

61/100

10%

Network Requests Diagram

wupperinst.org

306 ms

wupperinst.org

583 ms

ig_gdpr.min-cfbbcd3471b150db6412c01e5b66f280.css

188 ms

fonts-bce77c1e55504e62af08b9dad046c139.css

282 ms

site-23ffe7f786fb7e767eec7858ee1b6256.css

293 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that all of those requests were addressed to Wupperinst.org and no external sources were called. The less responsive or slowest element that took the longest time to load (657 ms) belongs to the original domain Wupperinst.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 116.4 kB (9%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images

In fact, the total size of Wupperinst.org main page is 1.3 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. 50% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 108.2 kB

  • Original 144.2 kB
  • After minification 129.5 kB
  • After compression 36.0 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 108.2 kB or 75% of the original size.

Image Optimization

-1%

Potential reduce by 8.2 kB

  • Original 1.1 MB
  • After minification 1.1 MB

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. Wupperinst images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 19 (41%)

Requests Now

46

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wupperinst. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

wupperinst.org

wupperinst.org

306 ms

wupperinst.org

wupperinst.org

583 ms

ig_gdpr.min-cfbbcd3471b150db6412c01e5b66f280.css

ig_gdpr.min-cfbbcd3471b150db6412c01e5b66f280.css

188 ms

fonts-bce77c1e55504e62af08b9dad046c139.css

fonts-bce77c1e55504e62af08b9dad046c139.css

282 ms

site-23ffe7f786fb7e767eec7858ee1b6256.css

site-23ffe7f786fb7e767eec7858ee1b6256.css

293 ms

wi_logo.svg

wi_logo.svg

283 ms

site.js

site.js

393 ms

ext.js

ext.js

188 ms

Form.min.js

Form.min.js

379 ms

ig_gdpr.min.js

ig_gdpr.min.js

320 ms

csm_iStock_000021860360_Biomasse_Wind_4f57acc16e.jpg

csm_iStock_000021860360_Biomasse_Wind_4f57acc16e.jpg

375 ms

csm_Getty_1195260765_Ara-Papagei_fd72607732.jpg

csm_Getty_1195260765_Ara-Papagei_fd72607732.jpg

379 ms

csm_Getty_950592934_Publikation_7fc2c543ca.jpg

csm_Getty_950592934_Publikation_7fc2c543ca.jpg

320 ms

csm_Getty_484018619_Publikationen_4c568c988c.jpg

csm_Getty_484018619_Publikationen_4c568c988c.jpg

501 ms

csm_JRF_Logo_de_2c8c7792bd.jpg

csm_JRF_Logo_de_2c8c7792bd.jpg

389 ms

icon-search.svg

icon-search.svg

257 ms

icon-slider-next.svg

icon-slider-next.svg

259 ms

icon-slider-prev.svg

icon-slider-prev.svg

260 ms

tile-mail.svg

tile-mail.svg

261 ms

tile-wi.svg

tile-wi.svg

261 ms

button-arrow-up.svg

button-arrow-up.svg

320 ms

button-print.svg

button-print.svg

322 ms

button-share-x.svg

button-share-x.svg

323 ms

button-share-facebook.svg

button-share-facebook.svg

324 ms

button-share-xing-neu.svg

button-share-xing-neu.svg

336 ms

button-share-linkedin.svg

button-share-linkedin.svg

338 ms

button-x.svg

button-x.svg

413 ms

button-youtube.svg

button-youtube.svg

417 ms

button-flickr.svg

button-flickr.svg

416 ms

button-linkedin.svg

button-linkedin.svg

418 ms

button-instagram.svg

button-instagram.svg

429 ms

button-rss.svg

button-rss.svg

431 ms

button-newsletter.svg

button-newsletter.svg

507 ms

3012A6_0_0.woff

3012A6_0_0.woff

533 ms

Gotham-Bold_Web.woff

Gotham-Bold_Web.woff

533 ms

Gotham-Medium_Web.woff

Gotham-Medium_Web.woff

533 ms

Gotham-Book_Web.woff

Gotham-Book_Web.woff

450 ms

Gotham-Light_Web.woff

Gotham-Light_Web.woff

467 ms

3012A6_2_0.woff

3012A6_2_0.woff

631 ms

3012A6_1_0.woff

3012A6_1_0.woff

564 ms

csm_SL_Getty_1293847813_Erde_9ec2202157.jpg

csm_SL_Getty_1293847813_Erde_9ec2202157.jpg

396 ms

csm_SL_Getty_1280877455_urbaneStadt_4fec189f4d.jpg

csm_SL_Getty_1280877455_urbaneStadt_4fec189f4d.jpg

553 ms

csm_SL_Getty_1365410828_Handwerk_Schreinerin_8e45534266.jpg

csm_SL_Getty_1365410828_Handwerk_Schreinerin_8e45534266.jpg

550 ms

csm_SL_WdU2024_1d4af629ba.jpg

csm_SL_WdU2024_1d4af629ba.jpg

552 ms

csm_Getty_1770507795_greenH2_c6bf737d1d.jpg

csm_Getty_1770507795_greenH2_c6bf737d1d.jpg

498 ms

csm_Thinkstock_188076117_FG_Systeme_6cde3539d5.jpg

csm_Thinkstock_188076117_FG_Systeme_6cde3539d5.jpg

501 ms

csm_Thinkstock_106440111_FG_Politik_0f468afd17.jpg

csm_Thinkstock_106440111_FG_Politik_0f468afd17.jpg

549 ms

csm_Thinkstock_178579708_FG_Produktion_9aa48d4d24.jpg

csm_Thinkstock_178579708_FG_Produktion_9aa48d4d24.jpg

574 ms

csm_Thinkstock_87681015_ret2_Kreislaufwirtschaft_34ebdc8082.jpg

csm_Thinkstock_87681015_ret2_Kreislaufwirtschaft_34ebdc8082.jpg

596 ms

csm_Fischedick_Manfred_zit_06092f871b.jpg

csm_Fischedick_Manfred_zit_06092f871b.jpg

638 ms

csm_Podcast_Zukunftswissen_Logo_pur_37f43f1854.png

csm_Podcast_Zukunftswissen_Logo_pur_37f43f1854.png

635 ms

csm_Oekologischer_Rucksack_7fbb488fe6.png

csm_Oekologischer_Rucksack_7fbb488fe6.png

639 ms

csm_SL_Getty_1293847813_Erde_9cc6a37c16.jpg

csm_SL_Getty_1293847813_Erde_9cc6a37c16.jpg

639 ms

csm_Thinkstock_188076117_FG_Systeme_90a6ede9b9.jpg

csm_Thinkstock_188076117_FG_Systeme_90a6ede9b9.jpg

657 ms

print-2ade192481f18f204f165042633b42b8.css

print-2ade192481f18f204f165042633b42b8.css

97 ms

Accessibility Review

wupperinst.org accessibility score

79

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

button, link, and menuitem elements do not have accessible names.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

wupperinst.org best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

wupperinst.org SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

wupperinst.org

Open Graph description is not detected on the main page of Wupperinst. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: