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passivhaus.org.uk screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

passivhaus.org.uk

Passivhaus Trust • Advancing the Passivhaus standard in the UK

Page Load Speed

4.3 sec in total

First Response

363 ms

Resources Loaded

3.6 sec

Page Rendered

266 ms

passivhaus.org.uk screenshot

About Website

Visit passivhaus.org.uk now to see the best up-to-date Passivhaus content for United Kingdom and also check out these interesting facts you probably never knew about passivhaus.org.uk

Read more about our approach to training & education → It looks like JavaScript is disabled in your browser. For the best experience, please enable JavaScript.

Visit passivhaus.org.uk

Key Findings

We analyzed Passivhaus.org.uk page load time and found that the first response time was 363 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

passivhaus.org.uk performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.4 s

1/100

10%

LCP (Largest Contentful Paint)

Value37.0 s

0/100

25%

SI (Speed Index)

Value19.8 s

0/100

10%

TBT (Total Blocking Time)

Value1,710 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value43.6 s

0/100

10%

Network Requests Diagram

passivhaus.org.uk

363 ms

passivhaus.uk

605 ms

global.css

46 ms

theplus-post-7257.min.css

80 ms

learndash.min.css

62 ms

Our browser made a total of 160 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Passivhaus.org.uk, 94% (151 requests) were made to Passivhaus.uk and 2% (3 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Passivhaus.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.9 MB (15%)

Content Size

19.0 MB

After Optimization

16.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Passivhaus.org.uk main page is 19.0 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. Only a small number of websites need less resources to load. Images take 18.5 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 381.1 kB

  • Original 461.1 kB
  • After minification 458.6 kB
  • After compression 80.0 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 381.1 kB or 83% of the original size.

Image Optimization

-14%

Potential reduce by 2.5 MB

  • Original 18.5 MB
  • After minification 16.0 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. Obviously, Passivhaus needs image optimization as it can save up to 2.5 MB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 100 B

  • Original 7.7 kB
  • After minification 7.7 kB
  • After compression 7.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 5 B

  • Original 21.6 kB
  • After minification 21.6 kB
  • After compression 21.6 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. Passivhaus.org.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 81 (52%)

Requests Now

156

After Optimization

75

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 156 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Passivhaus. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 39 to 1 for JavaScripts and from 44 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

passivhaus.org.uk

passivhaus.org.uk

363 ms

passivhaus.uk

passivhaus.uk

605 ms

global.css

global.css

46 ms

theplus-post-7257.min.css

theplus-post-7257.min.css

80 ms

learndash.min.css

learndash.min.css

62 ms

ldvc.css

ldvc.css

48 ms

grid-banner.css

grid-banner.css

76 ms

ayecode-ui-compatibility.css

ayecode-ui-compatibility.css

88 ms

style-index.css

style-index.css

108 ms

blocks.style.build.css

blocks.style.build.css

109 ms

plus-global.css

plus-global.css

108 ms

vtr4ypu.css

vtr4ypu.css

262 ms

style.css

style.css

111 ms

cbxwpbookmark-public.css

cbxwpbookmark-public.css

102 ms

style.css

style.css

98 ms

note.css

note.css

117 ms

frontend.css

frontend.css

120 ms

select2.css

select2.css

125 ms

pmpro-advanced-levels.css

pmpro-advanced-levels.css

128 ms

pmpromc.css

pmpromc.css

141 ms

bundle.min.css

bundle.min.css

160 ms

wt-smart-coupon-public.css

wt-smart-coupon-public.css

151 ms

learndash_quiz_front.min.css

learndash_quiz_front.min.css

158 ms

styles.css

styles.css

165 ms

jquery.dropdown.min.css

jquery.dropdown.min.css

161 ms

learndash_lesson_video.min.css

learndash_lesson_video.min.css

174 ms

style.css

style.css

218 ms

woocommerce.min.css

woocommerce.min.css

199 ms

wp-h5p-xapi.css

wp-h5p-xapi.css

195 ms

main.min.css

main.min.css

201 ms

main.min.css

main.min.css

206 ms

custom-badges.min.css

custom-badges.min.css

210 ms

main.min.css

main.min.css

451 ms

main.min.css

main.min.css

273 ms

main.min.css

main.min.css

238 ms

css2

css2

32 ms

header-account.min.css

header-account.min.css

248 ms

popups.min.css

popups.min.css

236 ms

frontend.css

frontend.css

360 ms

all.css

all.css

48 ms

style.min.css

style.min.css

239 ms

jquery.min.js

jquery.min.js

257 ms

jquery-migrate.min.js

jquery-migrate.min.js

238 ms

widget.min.js

widget.min.js

233 ms

all.min.js

all.min.js

298 ms

wc-blocks.css

wc-blocks.css

237 ms

style.css

style.css

247 ms

G1G13G7G14G15C28C25.css

G1G13G7G14G15C28C25.css

231 ms

v4-shims.min.js

v4-shims.min.js

263 ms

select2.min.js

select2.min.js

272 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

299 ms

geodirectory.min.js

geodirectory.min.js

345 ms

script.min.js

script.min.js

287 ms

script.min.js

script.min.js

400 ms

bundle.min.js

bundle.min.js

284 ms

jquery.blockUI.min.js

jquery.blockUI.min.js

306 ms

js.cookie.min.js

js.cookie.min.js

322 ms

woocommerce.min.js

woocommerce.min.js

375 ms

wt-smart-coupon-public.js

wt-smart-coupon-public.js

365 ms

cart-fragments.min.js

cart-fragments.min.js

363 ms

wp-h5p-xapi.js

wp-h5p-xapi.js

355 ms

learndash.js

learndash.js

461 ms

ldvc.js

ldvc.js

462 ms

theplus-post-7257.min.js

theplus-post-7257.min.js

453 ms

site_tracking.js

site_tracking.js

327 ms

cbxwpbookmark-events.js

cbxwpbookmark-events.js

429 ms

script.js

script.js

423 ms

cbxwpbookmark-public.js

cbxwpbookmark-public.js

420 ms

sourcebuster.min.js

sourcebuster.min.js

568 ms

order-attribution.min.js

order-attribution.min.js

412 ms

wpf-apply-tags.js

wpf-apply-tags.js

395 ms

main.js

main.js

391 ms

main.js

main.js

387 ms

p.css

p.css

22 ms

frontend.js

frontend.js

366 ms

script.js

script.js

361 ms

interactivity.min.js

interactivity.min.js

350 ms

view.min.js

view.min.js

350 ms

polyfills.js

polyfills.js

344 ms

facets.js

facets.js

455 ms

lightbox.js

lightbox.js

451 ms

layout.js

layout.js

444 ms

PHT-sticker-inverse.png

PHT-sticker-inverse.png

264 ms

2160x800-UKPHC24-image-only.png

2160x800-UKPHC24-image-only.png

273 ms

UKPHC24-logo-1024x375.png

UKPHC24-logo-1024x375.png

260 ms

PHT_logo_master_RGB_strapline.svg

PHT_logo_master_RGB_strapline.svg

256 ms

ipha_affiliate_final-01.svg

ipha_affiliate_final-01.svg

260 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Thermal-Bridging-1024x512.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Thermal-Bridging-1024x512.jpg

161 ms

double-click.svg

double-click.svg

552 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Care-homes-1024x512.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Care-homes-1024x512.jpg

161 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Heat-pumps-1024x512.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Heat-pumps-1024x512.jpg

162 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Air-Testing-1024x512.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Air-Testing-1024x512.jpg

163 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Ventillation-1024x512.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Ventillation-1024x512.jpg

162 ms

Large-and-Complex-Masterclass-Series-2024-Zoom-background-1024x576.png

Large-and-Complex-Masterclass-Series-2024-Zoom-background-1024x576.png

165 ms

2160-x-1080-Eventbrite-6-1024x512.png

2160-x-1080-Eventbrite-6-1024x512.png

164 ms

Artboard-2-1024x512.png

Artboard-2-1024x512.png

166 ms

How-to-Build-a-Passivhaus-1024x512.png

How-to-Build-a-Passivhaus-1024x512.png

167 ms

Retrofit-Intro-1024x512.png

Retrofit-Intro-1024x512.png

555 ms

2023-Moisture-Masterclass-Retrofit-Holding-slides-option-2-1024x576.png

2023-Moisture-Masterclass-Retrofit-Holding-slides-option-2-1024x576.png

175 ms

2160-x-1080-Eventbrite-4-1024x512.png

2160-x-1080-Eventbrite-4-1024x512.png

551 ms

noun-live-3264200.svg

noun-live-3264200.svg

560 ms

2160-x-1080-Eventbrite-5-1024x512.png

2160-x-1080-Eventbrite-5-1024x512.png

549 ms

How-to-Build-a-Passivhaus-3-1024x512.png

How-to-Build-a-Passivhaus-3-1024x512.png

550 ms

How-to-Build-a-Passivhaus-2-1024x512.png

How-to-Build-a-Passivhaus-2-1024x512.png

552 ms

Keeping-Cool-Avoiding-Overheating-1024x512.png

Keeping-Cool-Avoiding-Overheating-1024x512.png

554 ms

2160-x-1080-Eventbrite-3-1024x512.png

2160-x-1080-Eventbrite-3-1024x512.png

552 ms

2160-x-1080-Eventbrite-2-1024x512.png

2160-x-1080-Eventbrite-2-1024x512.png

548 ms

Leisure-Centre.jpeg

Leisure-Centre.jpeg

549 ms

2160-x-1080-Eventbrite-1024x512.png

2160-x-1080-Eventbrite-1024x512.png

551 ms

Non-domestic-1024x512.png

Non-domestic-1024x512.png

556 ms

Multi-residential-1024x512.png

Multi-residential-1024x512.png

554 ms

Step-by-Step-1024x512.png

Step-by-Step-1024x512.png

553 ms

Cavity-Wall-1024x512.png

Cavity-Wall-1024x512.png

556 ms

Solid-Wall-1024x512.png

Solid-Wall-1024x512.png

418 ms

Rayne-Park-1024x768.jpeg

Rayne-Park-1024x768.jpeg

420 ms

Oak-Tree-Passivhaus-Jill-Tate-22-sm.jpg

Oak-Tree-Passivhaus-Jill-Tate-22-sm.jpg

419 ms

Ringmer-Passivhaus-1024x358.jpeg

Ringmer-Passivhaus-1024x358.jpeg

418 ms

PHT_PH-Benefits-Cover-1-1024x731.jpg

PHT_PH-Benefits-Cover-1-1024x731.jpg

420 ms

2160-x-1080-Eventbrite-7-1024x512.png

2160-x-1080-Eventbrite-7-1024x512.png

420 ms

Preston-Springs-1024x512.jpg

Preston-Springs-1024x512.jpg

417 ms

Primrose-Park-1024x472.jpeg

Primrose-Park-1024x472.jpeg

420 ms

arrow-left.svg

arrow-left.svg

417 ms

arrow-right.svg

arrow-right.svg

418 ms

Large-and-Complex-Masterclass-Series-2024-Zoom-background-480x270.png

Large-and-Complex-Masterclass-Series-2024-Zoom-background-480x270.png

417 ms

2160-x-1080-Eventbrite-6-480x270.png

2160-x-1080-Eventbrite-6-480x270.png

418 ms

How-to-Build-a-Passivhaus-480x270.png

How-to-Build-a-Passivhaus-480x270.png

418 ms

2023-Moisture-Masterclass-Retrofit-Holding-slides-option-2-480x270.png

2023-Moisture-Masterclass-Retrofit-Holding-slides-option-2-480x270.png

416 ms

Retrofit-Intro-480x270.png

Retrofit-Intro-480x270.png

417 ms

Rayne-Park-480x270.jpeg

Rayne-Park-480x270.jpeg

415 ms

Oak-Tree-Passivhaus-Jill-Tate-22-sm-480x270.jpg

Oak-Tree-Passivhaus-Jill-Tate-22-sm-480x270.jpg

415 ms

Ringmer-Passivhaus-480x270.jpeg

Ringmer-Passivhaus-480x270.jpeg

413 ms

PHT_PH-Benefits-Cover-1-480x270.jpg

PHT_PH-Benefits-Cover-1-480x270.jpg

469 ms

2160-x-1080-Eventbrite-7-480x270.png

2160-x-1080-Eventbrite-7-480x270.png

404 ms

diffuser.js

diffuser.js

374 ms

Preston-Springs-480x270.jpg

Preston-Springs-480x270.jpg

93 ms

Primrose-Park-480x270.jpeg

Primrose-Park-480x270.jpeg

92 ms

Artboard-2-480x270.png

Artboard-2-480x270.png

92 ms

2160-x-1080-Eventbrite-5-480x270.png

2160-x-1080-Eventbrite-5-480x270.png

91 ms

How-to-Build-a-Passivhaus-3-480x270.png

How-to-Build-a-Passivhaus-3-480x270.png

90 ms

How-to-Build-a-Passivhaus-2-480x270.png

How-to-Build-a-Passivhaus-2-480x270.png

91 ms

Keeping-Cool-Avoiding-Overheating-480x270.png

Keeping-Cool-Avoiding-Overheating-480x270.png

89 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Thermal-Bridging-480x270.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Thermal-Bridging-480x270.jpg

89 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Care-homes-480x270.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Care-homes-480x270.jpg

199 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Heat-pumps-480x270.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Heat-pumps-480x270.jpg

197 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Air-Testing-480x270.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Air-Testing-480x270.jpg

197 ms

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Ventillation-480x270.jpg

Large-and-Complex-Masterclass-Series-2024-2160-x-1080-Eventbrite-Ventillation-480x270.jpg

83 ms

2160-x-1080-Eventbrite-3-480x270.png

2160-x-1080-Eventbrite-3-480x270.png

194 ms

2160-x-1080-Eventbrite-2-480x270.png

2160-x-1080-Eventbrite-2-480x270.png

193 ms

Leisure-Centre-480x270.jpeg

Leisure-Centre-480x270.jpeg

191 ms

2160-x-1080-Eventbrite-480x270.png

2160-x-1080-Eventbrite-480x270.png

192 ms

Non-domestic-480x270.png

Non-domestic-480x270.png

192 ms

Multi-residential-480x270.png

Multi-residential-480x270.png

191 ms

Step-by-Step-480x270.png

Step-by-Step-480x270.png

323 ms

Cavity-Wall-480x270.png

Cavity-Wall-480x270.png

221 ms

Solid-Wall-480x270.png

Solid-Wall-480x270.png

190 ms

d

d

29 ms

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30 ms

passivhaus.uk

passivhaus.uk

1276 ms

prism.app-us1.com

prism.app-us1.com

183 ms

print.css

print.css

34 ms

Accessibility Review

passivhaus.org.uk accessibility score

97

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

Best Practices

passivhaus.org.uk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

passivhaus.org.uk SEO score

83

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 Passivhaus.org.uk 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 Passivhaus.org.uk 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

passivhaus.org.uk

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