Tools & Wizards About Us
sv-lekstroom.nl screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

sv-lekstroom.nl

Gas or Oil Fired Heating Boilers,Electric Boilers Manufacturers

Page Load Speed

4.3 sec in total

First Response

341 ms

Resources Loaded

3.7 sec

Page Rendered

250 ms

sv-lekstroom.nl screenshot

About Website

Welcome to sv-lekstroom.nl homepage info - get ready to check Sv Lekstroom best content right away, or after learning these important things about sv-lekstroom.nl

Fangkuai Boiler Co., Ltd. is a high-tech enterprise integrating research and development, manufacturing and sales of gas hot water boilers, gas steam boilers, oil gas boilers, vacuum hot water boilers...

Visit sv-lekstroom.nl

Key Findings

We analyzed Sv-lekstroom.nl page load time and found that the first response time was 341 ms and then it took 4 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

sv-lekstroom.nl performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value12,100 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1.131

1/100

15%

TTI (Time to Interactive)

Value32.9 s

0/100

10%

Network Requests Diagram

sv-lekstroom.nl

341 ms

website.sv-lekstroom.nl

950 ms

modstyle.css

197 ms

bootstrap.css

767 ms

bootstrap-responsive.css

385 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Sv-lekstroom.nl, 97% (33 requests) were made to Website.sv-lekstroom.nl. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Website.sv-lekstroom.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 726.5 kB (62%)

Content Size

1.2 MB

After Optimization

444.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sv-lekstroom.nl main page is 1.2 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. 15% of websites need less resources to load. Javascripts take 631.9 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 15.6 kB

  • Original 20.5 kB
  • After minification 19.3 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. 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 15.6 kB or 76% of the original size.

Image Optimization

-9%

Potential reduce by 21.7 kB

  • Original 239.3 kB
  • After minification 217.6 kB

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. Sv Lekstroom images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 446.3 kB

  • Original 631.9 kB
  • After minification 594.7 kB
  • After compression 185.6 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 446.3 kB or 71% of the original size.

CSS Optimization

-87%

Potential reduce by 242.9 kB

  • Original 279.5 kB
  • After minification 238.4 kB
  • After compression 36.5 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. Sv-lekstroom.nl needs all CSS files to be minified and compressed as it can save up to 242.9 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (56%)

Requests Now

32

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sv Lekstroom. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sv-lekstroom.nl

sv-lekstroom.nl

341 ms

website.sv-lekstroom.nl

website.sv-lekstroom.nl

950 ms

modstyle.css

modstyle.css

197 ms

bootstrap.css

bootstrap.css

767 ms

bootstrap-responsive.css

bootstrap-responsive.css

385 ms

mootools-core.js

mootools-core.js

613 ms

core.js

core.js

194 ms

mootools-more.js

mootools-more.js

1090 ms

jquery.min.js

jquery.min.js

864 ms

jquery-noconflict.js

jquery-noconflict.js

387 ms

jquery-migrate.min.js

jquery-migrate.min.js

670 ms

caption.js

caption.js

579 ms

mod_jevents_filter.js

mod_jevents_filter.js

792 ms

bootstrap.min.js

bootstrap.min.js

994 ms

system.css

system.css

863 ms

general.css

general.css

957 ms

template.css

template.css

1261 ms

template.responsive.css

template.responsive.css

1072 ms

jquery.js

jquery.js

1445 ms

script.js

script.js

1443 ms

script.responsive.js

script.responsive.js

1290 ms

system.css

system.css

194 ms

pageglare.png

pageglare.png

387 ms

page.png

page.png

198 ms

object55317261.jpg

object55317261.jpg

199 ms

header.jpg

header.jpg

674 ms

sheet.png

sheet.png

481 ms

nav.png

nav.png

289 ms

spacer.gif

spacer.gif

389 ms

blockheadericon.png

blockheadericon.png

388 ms

blockcontent.png

blockcontent.png

577 ms

blockbullets.png

blockbullets.png

579 ms

Gambiettoernooi01.png

Gambiettoernooi01.png

963 ms

glyphicons-halflings.png

glyphicons-halflings.png

677 ms

Accessibility Review

sv-lekstroom.nl accessibility score

77

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

<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

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

sv-lekstroom.nl best practices score

67

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

High

Browser errors were logged to the console

SEO Factors

sv-lekstroom.nl SEO score

81

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sv-lekstroom.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Dutch language. Our system also found out that Sv-lekstroom.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

sv-lekstroom.nl

Open Graph description is not detected on the main page of Sv Lekstroom. 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: