Tools & Wizards About Us
tsa-bv.nl screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% 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

  • 98

    SEO

    Google-friendlier than
    92% of websites

tsa-bv.nl

Brandwachten, Gasdetectie, Monitoring, Veiligheid, Toezicht - TSA Safety Services

Page Load Speed

5.9 sec in total

First Response

375 ms

Resources Loaded

5.3 sec

Page Rendered

179 ms

tsa-bv.nl screenshot

About Website

Visit tsa-bv.nl now to see the best up-to-date TSA Bv content and also check out these interesting facts you probably never knew about tsa-bv.nl

TSA Safety Services levert veiligheidstoezicht, brandwachten en middelen zoals gasdetectie voor een (brand)veilige werkomgeving in bv petrochemische industrie

Visit tsa-bv.nl

Key Findings

We analyzed Tsa-bv.nl page load time and found that the first response time was 375 ms 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

tsa-bv.nl performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

22/100

25%

SI (Speed Index)

Value5.6 s

54/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

tsa-bv.nl

375 ms

www.tsa-bv.nl

1519 ms

css

24 ms

305 ms

jquery.min.js

6 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 76% of them (22 requests) were addressed to the original Tsa-bv.nl, 10% (3 requests) were made to Fonts.gstatic.com and 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Tsa-bv.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 36.5 kB (3%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Tsa-bv.nl 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. 35% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 20.3 kB

  • Original 25.1 kB
  • After minification 20.2 kB
  • After compression 4.9 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 5.0 kB, which is 20% 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 20.3 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 13.2 kB

  • Original 1.2 MB
  • After minification 1.2 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. TSA Bv images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 3.1 kB

  • Original 24.7 kB
  • After minification 22.6 kB
  • After compression 21.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 3.1 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (13%)

Requests Now

24

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TSA Bv. 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 as a result speed up the page load time.

Network Requests Diagram

tsa-bv.nl

tsa-bv.nl

375 ms

www.tsa-bv.nl

www.tsa-bv.nl

1519 ms

css

css

24 ms

305 ms

jquery.min.js

jquery.min.js

6 ms

459 ms

eo.js.php

eo.js.php

282 ms

analytics.js

analytics.js

111 ms

logo.svg

logo.svg

131 ms

350_265_6_24_3_veiligheidsdag_hq_15.jpg

350_265_6_24_3_veiligheidsdag_hq_15.jpg

354 ms

350_265_6_414_0_nl_lucifers_brandend.jpg

350_265_6_414_0_nl_lucifers_brandend.jpg

264 ms

folder.png

folder.png

434 ms

footerlogo-nibhv.png

footerlogo-nibhv.png

179 ms

footerlogo-ccv.png

footerlogo-ccv.png

180 ms

footerlogo-fira.png

footerlogo-fira.png

216 ms

callbanner.jpg

callbanner.jpg

253 ms

newswidget-mask.png

newswidget-mask.png

173 ms

visualmask.png

visualmask.png

208 ms

800_400_6_2_2_tsa_gebouw.jpg

800_400_6_2_2_tsa_gebouw.jpg

428 ms

800_400_6_8_2_sf_85817431.jpg

800_400_6_8_2_sf_85817431.jpg

878 ms

800_400_6_7_2_20121112_150553_kopie.jpg

800_400_6_7_2_20121112_150553_kopie.jpg

1074 ms

800_400_6_90_2_img00058_20110514_1426.jpg

800_400_6_90_2_img00058_20110514_1426.jpg

423 ms

800_400_6_92_2_safety_services.jpg

800_400_6_92_2_safety_services.jpg

540 ms

800_400_6_396_0_IMG_7569_2a.jpg

800_400_6_396_0_IMG_7569_2a.jpg

588 ms

icomoon.svg

icomoon.svg

533 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

10 ms

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

11 ms

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

11 ms

collect

collect

15 ms

Accessibility Review

tsa-bv.nl accessibility score

79

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

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

tsa-bv.nl best practices score

75

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

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

tsa-bv.nl SEO score

98

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

tsa-bv.nl

Open Graph description is not detected on the main page of TSA Bv. 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: