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vsl.com screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

vsl.com

VSL International | Construction specialist since 1956

Page Load Speed

6.1 sec in total

First Response

199 ms

Resources Loaded

4.8 sec

Page Rendered

1.1 sec

vsl.com screenshot

About Website

Visit vsl.com now to see the best up-to-date VSL content for Sri Lanka and also check out these interesting facts you probably never knew about vsl.com

VSL is a specialist in the construction and repairs of post-tensioned & cable-stayed structures, foundations & ground engineering. We make any project possible!

Visit vsl.com

Key Findings

We analyzed Vsl.com page load time and found that the first response time was 199 ms and then it took 5.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

vsl.com performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value1,310 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.119

85/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

vsl.com

199 ms

vsl.com

1892 ms

autoptimize_single_f43716473b27836b11da2bae346629fd.js

180 ms

autoptimize_single_943543d8c34e1354e8b037a3a2b67f3a.js

356 ms

autoptimize_single_58f62a14b60056eeabf4d301abed902a.js

264 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 78% of them (80 requests) were addressed to the original Vsl.com, 14% (14 requests) were made to Fonts.gstatic.com and 4% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Vsl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 228.9 kB (5%)

Content Size

4.6 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vsl.com main page is 4.6 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. 65% of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 113.9 kB

  • Original 147.6 kB
  • After minification 146.5 kB
  • After compression 33.6 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. 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 113.9 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 113.0 kB

  • Original 3.7 MB
  • After minification 3.6 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. VSL images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.9 kB

  • Original 630.5 kB
  • After minification 630.5 kB
  • After compression 628.6 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 79 B

  • Original 113.9 kB
  • After minification 113.9 kB
  • After compression 113.8 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. Vsl.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 66 (77%)

Requests Now

86

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of VSL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 40 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vsl.com

vsl.com

199 ms

vsl.com

vsl.com

1892 ms

autoptimize_single_f43716473b27836b11da2bae346629fd.js

autoptimize_single_f43716473b27836b11da2bae346629fd.js

180 ms

autoptimize_single_943543d8c34e1354e8b037a3a2b67f3a.js

autoptimize_single_943543d8c34e1354e8b037a3a2b67f3a.js

356 ms

autoptimize_single_58f62a14b60056eeabf4d301abed902a.js

autoptimize_single_58f62a14b60056eeabf4d301abed902a.js

264 ms

autoptimize_single_69d2f33d0e87f2f9929826360b467d28.css

autoptimize_single_69d2f33d0e87f2f9929826360b467d28.css

268 ms

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autoptimize_single_232eefeb8d52c53a6d797ded835b8c94.css

282 ms

style.min.css

style.min.css

378 ms

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285 ms

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autoptimize_single_c4ed95e6e05d016fbc1fd918293fdd98.css

351 ms

jquery-ui-1.10.3.min.css

jquery-ui-1.10.3.min.css

362 ms

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576 ms

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autoptimize_single_6458e5be4ad489c7ef2a96a1f3813f0a.css

381 ms

jquery.min.js

jquery.min.js

532 ms

jquery-migrate.min.js

jquery-migrate.min.js

443 ms

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445 ms

popper.min.js

popper.min.js

23 ms

lazysizes.min.js

lazysizes.min.js

386 ms

css

css

47 ms

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389 ms

slick.css

slick.css

25 ms

lity.min.css

lity.min.css

445 ms

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448 ms

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480 ms

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483 ms

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533 ms

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589 ms

rbtools.min.js

rbtools.min.js

689 ms

rs6.min.js

rs6.min.js

835 ms

core.min.js

core.min.js

605 ms

menu.min.js

menu.min.js

607 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

687 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

687 ms

wp-polyfill.min.js

wp-polyfill.min.js

782 ms

dom-ready.min.js

dom-ready.min.js

782 ms

hooks.min.js

hooks.min.js

795 ms

i18n.min.js

i18n.min.js

795 ms

a11y.min.js

a11y.min.js

794 ms

autocomplete.min.js

autocomplete.min.js

878 ms

autoptimize_single_a56436c9e214ef323a2a3581d13dffe9.js

autoptimize_single_a56436c9e214ef323a2a3581d13dffe9.js

877 ms

api.js

api.js

40 ms

slick.min.js

slick.min.js

21 ms

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871 ms

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787 ms

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800 ms

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712 ms

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769 ms

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773 ms

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711 ms

autoptimize_single_c6f1b16ec99e0164152e0fbb71441731.js

autoptimize_single_c6f1b16ec99e0164152e0fbb71441731.js

699 ms

lity.min.js

lity.min.js

822 ms

jquery.overlayScrollbars.min.js

jquery.overlayScrollbars.min.js

806 ms

autoptimize_single_98006de4465fa9f4f028de0bb33f49a2.js

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809 ms

autoptimize_single_d3c88b368b180c1e8e27e4a645a7aba7.js

autoptimize_single_d3c88b368b180c1e8e27e4a645a7aba7.js

749 ms

lazyload.min.js

lazyload.min.js

748 ms

css

css

22 ms

css2

css2

41 ms

css2

css2

42 ms

cropped-VSLLOGO.png

cropped-VSLLOGO.png

517 ms

ico-location.svg

ico-location.svg

519 ms

ico-location-w.svg

ico-location-w.svg

605 ms

picto-world.svg

picto-world.svg

606 ms

picto-world-w.svg

picto-world-w.svg

606 ms

ico-pin-w.svg

ico-pin-w.svg

607 ms

ico-pin.svg

ico-pin.svg

608 ms

ico-envelope-w.svg

ico-envelope-w.svg

609 ms

ico-person.svg

ico-person.svg

652 ms

location-world.svg

location-world.svg

637 ms

dummy.png

dummy.png

636 ms

7cHpv4kjgoGqM7EPCw.ttf

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81 ms

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82 ms

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176 ms

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188 ms

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190 ms

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191 ms

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191 ms

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192 ms

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190 ms

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192 ms

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192 ms

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HTxwL3I-JCGChYJ8VI-L6OO_au7B4873_3E.ttf

227 ms

bg-2.png

bg-2.png

2041 ms

external-link.svg

external-link.svg

568 ms

icon-upload.svg

icon-upload.svg

574 ms

icon-form-sucess.svg

icon-form-sucess.svg

629 ms

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28 ms

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62 ms

recaptcha__en.js

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27 ms

icon-left-arrow.svg

icon-left-arrow.svg

89 ms

icon-sub-menu.svg

icon-sub-menu.svg

90 ms

Picture-NEW-Structure.jpeg

Picture-NEW-Structure.jpeg

576 ms

Picture-Structure-existing.jpeg

Picture-Structure-existing.jpeg

484 ms

VSL-TECHNOLOGIES-BLOC-min-scaled.jpg

VSL-TECHNOLOGIES-BLOC-min-scaled.jpg

516 ms

private-space.png

private-space.png

263 ms

ico-person.svg

ico-person.svg

179 ms

decarbonization.jpg

decarbonization.jpg

268 ms

VSL_Safety2021_image_1.png

VSL_Safety2021_image_1.png

613 ms

Decarbonation-2000-588.jpg

Decarbonation-2000-588.jpg

617 ms

VSL-Bearing-Replacement-pic-V2.jpg

VSL-Bearing-Replacement-pic-V2.jpg

762 ms

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707 ms

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675 ms

icon-social-in.svg

icon-social-in.svg

701 ms

icon-press.svg

icon-press.svg

704 ms

Accessibility Review

vsl.com accessibility score

81

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

Low

No form fields have multiple labels

High

Image elements do not have [alt] attributes

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

[id] attributes on active, focusable elements are not unique

Best Practices

vsl.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

High

Page has valid source maps

SEO Factors

vsl.com SEO score

77

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vsl.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 Vsl.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

vsl.com

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