Tools & Wizards About Us
passivent.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

passivent.com

Passivent - Specialists in delivering natural ventilation and daylighting solutions.

Page Load Speed

5.3 sec in total

First Response

402 ms

Resources Loaded

4.2 sec

Page Rendered

751 ms

passivent.com screenshot

About Website

Visit passivent.com now to see the best up-to-date Passivent content and also check out these interesting facts you probably never knew about passivent.com

Passivent are specialists in delivering natural ventilation and daylighting solutions and are a leading UK company in the field of sustainable and energy efficient ventilation for commercial buildings...

Visit passivent.com

Key Findings

We analyzed Passivent.com page load time and found that the first response time was 402 ms and then it took 4.9 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

passivent.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value1,370 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

passivent.com

402 ms

www.passivent.com

940 ms

gtm.js

69 ms

app.css

370 ms

jquery.js

458 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 78% of them (38 requests) were addressed to the original Passivent.com, 4% (2 requests) were made to Googletagmanager.com and 4% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Passivent.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 282.1 kB (10%)

Content Size

2.8 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Passivent.com main page is 2.8 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. 35% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 149.3 kB

  • Original 183.1 kB
  • After minification 175.2 kB
  • After compression 33.8 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 149.3 kB or 82% of the original size.

Image Optimization

-4%

Potential reduce by 100.8 kB

  • Original 2.5 MB
  • After minification 2.4 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. Passivent images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 32.0 kB

  • Original 52.9 kB
  • After minification 52.9 kB
  • After compression 20.9 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 32.0 kB or 60% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 5 B

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.

Requests Breakdown

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

Requests Now

46

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Passivent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

passivent.com

passivent.com

402 ms

www.passivent.com

www.passivent.com

940 ms

gtm.js

gtm.js

69 ms

app.css

app.css

370 ms

jquery.js

jquery.js

458 ms

jquery-migrate.js

jquery-migrate.js

374 ms

ajaxLoadMore.js

ajaxLoadMore.js

317 ms

uwu4drn.css

uwu4drn.css

134 ms

dashicons.css

dashicons.css

443 ms

display-opinions-light.css

display-opinions-light.css

388 ms

font-awesome.min.css

font-awesome.min.css

648 ms

js.cookie.min.js

js.cookie.min.js

312 ms

app.js

app.js

712 ms

vendor.js

vendor.js

638 ms

underscore.min.js

underscore.min.js

733 ms

backbone.min.js

backbone.min.js

780 ms

front-end-deps.js

front-end-deps.js

836 ms

front-end.js

front-end.js

987 ms

lazyload.js

lazyload.js

928 ms

js

js

69 ms

analytics.js

analytics.js

30 ms

insight.min.js

insight.min.js

162 ms

p.css

p.css

183 ms

collect

collect

141 ms

insight_tag_errors.gif

insight_tag_errors.gif

223 ms

js.cookie.min.js

js.cookie.min.js

33 ms

search.svg

search.svg

512 ms

Passivent_stamp.png

Passivent_stamp.png

424 ms

button-chevron.svg

button-chevron.svg

278 ms

wave-top.svg

wave-top.svg

110 ms

2.1.3-in-situ_Hybrid-Ventilation_1920x1080-72dpi-1024x576.jpg

2.1.3-in-situ_Hybrid-Ventilation_1920x1080-72dpi-1024x576.jpg

497 ms

2.1.5-in-situ_Litevent_Natural-Day-1920x1080-72dpi-1024x576.jpg

2.1.5-in-situ_Litevent_Natural-Day-1920x1080-72dpi-1024x576.jpg

552 ms

3.6-Residentail-Care-Healthcare_1920x1080-72dpi-1024x576.jpg

3.6-Residentail-Care-Healthcare_1920x1080-72dpi-1024x576.jpg

632 ms

chevron.svg

chevron.svg

383 ms

wave-bottom.svg

wave-bottom.svg

536 ms

3.3-Commercial-sector_BSkyB-Building-%C2%A9-Simon-Kennedy_1920x1080-72dpi.jpg

3.3-Commercial-sector_BSkyB-Building-%C2%A9-Simon-Kennedy_1920x1080-72dpi.jpg

1115 ms

L_104_89599be3388d0b216ad367f8dc80bcae-1024x477.jpg

L_104_89599be3388d0b216ad367f8dc80bcae-1024x477.jpg

843 ms

Man-in-front-of-PC-Bulk-Airflow-Calc-1920x1080-72dpi-1024x576.jpg

Man-in-front-of-PC-Bulk-Airflow-Calc-1920x1080-72dpi-1024x576.jpg

683 ms

3.4B_Leisure_Sports-Hall_KingsSchool_02032021_26-1024x976.jpg

3.4B_Leisure_Sports-Hall_KingsSchool_02032021_26-1024x976.jpg

1034 ms

Row-5-1920-x-1080-Pixels-72dpi-1.jpg.webp

Row-5-1920-x-1080-Pixels-72dpi-1.jpg.webp

1064 ms

LAC-25_%C2%A9-Speller-Metcalfe_cropped-1200x800-2-1024x683.jpg

LAC-25_%C2%A9-Speller-Metcalfe_cropped-1200x800-2-1024x683.jpg

1124 ms

IES-Main-Logo-e1713182911584.jpg

IES-Main-Logo-e1713182911584.jpg

1028 ms

PV-Whats-New-Thumbnail-Meet-The-Team-Jo-Foulkes-300x300-1.jpg

PV-Whats-New-Thumbnail-Meet-The-Team-Jo-Foulkes-300x300-1.jpg

1032 ms

passivent_whiteout_logo.svg

passivent_whiteout_logo.svg

1301 ms

Passivent_stamp.png

Passivent_stamp.png

1497 ms

BuildingProductDesign_Logo-Mono-149x52-96dpi.png

BuildingProductDesign_Logo-Mono-149x52-96dpi.png

1385 ms

glidevale-protect-mono-logo-small.png

glidevale-protect-mono-logo-small.png

1170 ms

kingfisher-logo-mono-small.png

kingfisher-logo-mono-small.png

1400 ms

678259078

678259078

170 ms

Accessibility Review

passivent.com accessibility score

79

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.

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

ARIA IDs are not unique

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

passivent.com 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

High

Page has valid source maps

SEO Factors

passivent.com SEO score

71

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

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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 Passivent.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 Passivent.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

passivent.com

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