Tools & Wizards About Us
esnw.nl screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

esnw.nl

CV-ketel en verwarmingsspecialist ESNW - Uw gaswacht

Page Load Speed

4.4 sec in total

First Response

623 ms

Resources Loaded

3.4 sec

Page Rendered

316 ms

esnw.nl screenshot

About Website

Visit esnw.nl now to see the best up-to-date ESNW content for Indonesia and also check out these interesting facts you probably never knew about esnw.nl

CV-ketel en verwarmingsspecialist ESNW is er voor service, onderhoudscontracten en cv-ketel verkoop. Storing? 24/7 melden mogelijk! ? 072 - 512 3134

Visit esnw.nl

Key Findings

We analyzed Esnw.nl page load time and found that the first response time was 623 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

esnw.nl performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value11.5 s

0/100

25%

SI (Speed Index)

Value5.2 s

59/100

10%

TBT (Total Blocking Time)

Value170 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

esnw.nl

623 ms

jcemediabox.css

125 ms

style.css

236 ms

style.css

237 ms

jstyle.css

241 ms

Our browser made a total of 132 requests to load all elements on the main page. We found that 41% of them (54 requests) were addressed to the original Esnw.nl, 24% (32 requests) were made to Static.xx.fbcdn.net and 12% (16 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Esnw.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (56%)

Content Size

2.1 MB

After Optimization

916.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Esnw.nl main page is 2.1 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. 70% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 50.6 kB

  • Original 61.0 kB
  • After minification 54.8 kB
  • After compression 10.5 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 50.6 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 33.9 kB

  • Original 649.6 kB
  • After minification 615.6 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. ESNW images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 982.6 kB

  • Original 1.3 MB
  • After minification 948.3 kB
  • After compression 272.9 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 982.6 kB or 78% of the original size.

CSS Optimization

-84%

Potential reduce by 95.2 kB

  • Original 112.9 kB
  • After minification 91.1 kB
  • After compression 17.7 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. Esnw.nl needs all CSS files to be minified and compressed as it can save up to 95.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 71 (55%)

Requests Now

129

After Optimization

58

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 129 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ESNW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 45 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

esnw.nl

esnw.nl

623 ms

jcemediabox.css

jcemediabox.css

125 ms

style.css

style.css

236 ms

style.css

style.css

237 ms

jstyle.css

jstyle.css

241 ms

megamenu.css

megamenu.css

244 ms

jcemediabox.js

jcemediabox.js

367 ms

mootools-core.js

mootools-core.js

357 ms

core.js

core.js

352 ms

mootools-more.js

mootools-more.js

712 ms

jscript.js

jscript.js

361 ms

jquery.min.js

jquery.min.js

611 ms

jquery-noconflict.js

jquery-noconflict.js

468 ms

jquery-migrate.min.js

jquery-migrate.min.js

471 ms

megamenu.js

megamenu.js

483 ms

template.css

template.css

486 ms

jquery-2.1.3.js

jquery-2.1.3.js

944 ms

jquery-ui.js

jquery-ui.js

962 ms

template.js

template.js

603 ms

widgets.js

widgets.js

14 ms

in.js

in.js

14 ms

plusone.js

plusone.js

33 ms

gtm.js

gtm.js

71 ms

facebook-small.png

facebook-small.png

156 ms

link-small.png

link-small.png

143 ms

twitter-small.png

twitter-small.png

143 ms

instagram-small.jpg

instagram-small.jpg

139 ms

logo.gif

logo.gif

137 ms

ESNW_tagline.png

ESNW_tagline.png

142 ms

menubg.png

menubg.png

283 ms

banner560ketelkopen.jpg

banner560ketelkopen.jpg

388 ms

CV-ketel_merken_bij_ESNW.001.jpg

CV-ketel_merken_bij_ESNW.001.jpg

505 ms

transparent_bg.png

transparent_bg.png

290 ms

Beterbinnenklimaat300.jpg

Beterbinnenklimaat300.jpg

393 ms

COstopkoolmonoxide.jpg

COstopkoolmonoxide.jpg

515 ms

previous.png

previous.png

381 ms

next.png

next.png

406 ms

ontzorgabo120.png

ontzorgabo120.png

497 ms

mvb100.png

mvb100.png

505 ms

co-stop100.png

co-stop100.png

515 ms

grad-bg.png

grad-bg.png

499 ms

Alvanaf690enketels.png

Alvanaf690enketels.png

584 ms

bgreadmore.png

bgreadmore.png

604 ms

handen-mobiel200.png

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723 ms

warme-voeten.png

warme-voeten.png

725 ms

muntjes100.png

muntjes100.png

609 ms

werkgebied100.png

werkgebied100.png

620 ms

huisje100.png

huisje100.png

700 ms

werkgebied.gif

werkgebied.gif

692 ms

Warmtepomp_Ecolution_solo.jpg.jpg

Warmtepomp_Ecolution_solo.jpg.jpg

1037 ms

OKCV230.png

OKCV230.png

726 ms

ESNW_login_button.png

ESNW_login_button.png

800 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1034 ms

secureAnonymousFramework

secureAnonymousFramework

98 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

125 ms

analytics.js

analytics.js

34 ms

popup.html

popup.html

770 ms

tooltip.html

tooltip.html

783 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

172 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

126 ms

fastbutton

fastbutton

165 ms

like.php

like.php

225 ms

handen-mobiel.png

handen-mobiel.png

1026 ms

check.png

check.png

970 ms

bgfooter2.png

bgfooter2.png

970 ms

collect

collect

20 ms

collect

collect

196 ms

share

share

154 ms

sprite_connect_v14.png

sprite_connect_v14.png

162 ms

likebox.php

likebox.php

451 ms

postmessageRelay

postmessageRelay

100 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

57 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

45 ms

grlryt2bdKIyfMSOhzd1eA.woff

grlryt2bdKIyfMSOhzd1eA.woff

61 ms

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

18 ms

qeKvIRsJabD.js

qeKvIRsJabD.js

300 ms

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328 ms

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20 ms

rpc:shindig_random.js

rpc:shindig_random.js

39 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

3 ms

jot

jot

84 ms

SiX1kO5JPj3.css

SiX1kO5JPj3.css

123 ms

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128 ms

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126 ms

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124 ms

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163 ms

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133 ms

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238 ms

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255 ms

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162 ms

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172 ms

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175 ms

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205 ms

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324 ms

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266 ms

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208 ms

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284 ms

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266 ms

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275 ms

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277 ms

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280 ms

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290 ms

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334 ms

safe_image.php

safe_image.php

220 ms

safe_image.php

safe_image.php

255 ms

safe_image.php

safe_image.php

396 ms

safe_image.php

safe_image.php

365 ms

safe_image.php

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422 ms

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363 ms

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405 ms

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441 ms

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491 ms

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624 ms

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522 ms

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448 ms

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449 ms

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513 ms

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534 ms

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592 ms

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718 ms

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42 ms

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82 ms

Accessibility Review

esnw.nl 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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

esnw.nl 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

Missing source maps for large first-party JavaScript

SEO Factors

esnw.nl SEO score

93

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 uses legible font sizes

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 Esnw.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 Esnw.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

esnw.nl

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