Tools & Wizards About Us
devbattle.nl screenshot

Report Summary

  • 62

    Performance

    Renders faster than
    77% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

devbattle.nl

Devbattle 2017 - De beste developer van het Noorden

Page Load Speed

3.2 sec in total

First Response

429 ms

Resources Loaded

1.8 sec

Page Rendered

1 sec

devbattle.nl screenshot

About Website

Welcome to devbattle.nl homepage info - get ready to check Devbattle best content right away, or after learning these important things about devbattle.nl

Doe mee aan Devbattle 2017 het event voor developers in het noorden van Nederland. Ga met elkaar de strijd aan en win een geweldige reis naar San Francisco

Visit devbattle.nl

Key Findings

We analyzed Devbattle.nl page load time and found that the first response time was 429 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

devbattle.nl performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

devbattle.nl

429 ms

wp-emoji-release.min.js

93 ms

A.css,,_bootstrap-grid.min.css,,qver==4.3.3+css,,_forms.css,,qver==4.3.3+css,,_hackathon.css,,qver==4.3.3+libs,,_nivo-lightbox,,_nivo-lightbox.css,,qver==4.3.3,Mcc.CjpkBy4fq_.css.pagespeed.cf.mUSaaTG8SW.css

181 ms

jquery.js,qver==1.11.3+jquery-migrate.min.js,qver==1.2.1.pagespeed.jc.jfDTI1fPhI.js

278 ms

css

38 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 42% of them (30 requests) were addressed to the original Devbattle.nl, 15% (11 requests) were made to Maps.googleapis.com and 6% (4 requests) were made to F.vimeocdn.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Devbattle.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (38%)

Content Size

3.4 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Devbattle.nl main page is 3.4 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 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 20.4 kB

  • Original 28.9 kB
  • After minification 28.8 kB
  • After compression 8.5 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 20.4 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 1.6 kB

  • Original 1.6 MB
  • After minification 1.6 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. Devbattle images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 1.0 MB

  • Original 1.5 MB
  • After minification 1.5 MB
  • After compression 479.6 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 1.0 MB or 68% of the original size.

CSS Optimization

-85%

Potential reduce by 236.9 kB

  • Original 277.1 kB
  • After minification 276.2 kB
  • After compression 40.2 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. Devbattle.nl needs all CSS files to be minified and compressed as it can save up to 236.9 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (51%)

Requests Now

68

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Devbattle. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

devbattle.nl

devbattle.nl

429 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

93 ms

A.css,,_bootstrap-grid.min.css,,qver==4.3.3+css,,_forms.css,,qver==4.3.3+css,,_hackathon.css,,qver==4.3.3+libs,,_nivo-lightbox,,_nivo-lightbox.css,,qver==4.3.3,Mcc.CjpkBy4fq_.css.pagespeed.cf.mUSaaTG8SW.css

A.css,,_bootstrap-grid.min.css,,qver==4.3.3+css,,_forms.css,,qver==4.3.3+css,,_hackathon.css,,qver==4.3.3+libs,,_nivo-lightbox,,_nivo-lightbox.css,,qver==4.3.3,Mcc.CjpkBy4fq_.css.pagespeed.cf.mUSaaTG8SW.css

181 ms

jquery.js,qver==1.11.3+jquery-migrate.min.js,qver==1.2.1.pagespeed.jc.jfDTI1fPhI.js

jquery.js,qver==1.11.3+jquery-migrate.min.js,qver==1.2.1.pagespeed.jc.jfDTI1fPhI.js

278 ms

css

css

38 ms

font-awesome.min.css

font-awesome.min.css

5 ms

jquery.min.js

jquery.min.js

95 ms

A.formreset.min.css,,qver==1.9.13+datepicker.min.css,,qver==1.9.13+formsmain.min.css,,qver==1.9.13+readyclass.min.css,,qver==1.9.13+browsers.min.css,,qver==1.9.13,Mcc.Zbx6wew7XQ.css.pagespeed.cf.IgB4tCn6Ep.css

A.formreset.min.css,,qver==1.9.13+datepicker.min.css,,qver==1.9.13+formsmain.min.css,,qver==1.9.13+readyclass.min.css,,qver==1.9.13+browsers.min.css,,qver==1.9.13,Mcc.Zbx6wew7XQ.css.pagespeed.cf.IgB4tCn6Ep.css

314 ms

wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.plugin.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.countdown.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.countdown-nl.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_nivo-lightbox,_nivo-lightbox.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_js,_scripts.js,qver==1.1+wp-includes,_js,_jquery,_ui,_core.min.js,qver==1.11.4+wp-includes,_js,_jquery,_ui,_datepicker.min.js,qver==1.11.4+wp-content,_plugins,_gravityforms,_js,_jquery.json-1.3.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_gravityforms.min.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_datepicker.min.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_placeholders.jquery.min.js,qver==1.9.13.pagespeed.jc.BNSrAf_LsK.js

wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.plugin.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.countdown.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_countdown,_jquery.countdown-nl.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_libs,_nivo-lightbox,_nivo-lightbox.min.js,qver==1.1+wp-content,_themes,_dbk-theme,_assets,_js,_scripts.js,qver==1.1+wp-includes,_js,_jquery,_ui,_core.min.js,qver==1.11.4+wp-includes,_js,_jquery,_ui,_datepicker.min.js,qver==1.11.4+wp-content,_plugins,_gravityforms,_js,_jquery.json-1.3.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_gravityforms.min.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_datepicker.min.js,qver==1.9.13+wp-content,_plugins,_gravityforms,_js,_placeholders.jquery.min.js,qver==1.9.13.pagespeed.jc.BNSrAf_LsK.js

314 ms

xfriesland-college.jpg.pagespeed.ic.GhhFoWu0gL.jpg

xfriesland-college.jpg.pagespeed.ic.GhhFoWu0gL.jpg

151 ms

900xNxdevbattle-2016-logo-v2.png.pagespeed.ic.vWU0ga6PJ3.png

900xNxdevbattle-2016-logo-v2.png.pagespeed.ic.vWU0ga6PJ3.png

451 ms

xlinux-logo.png.pagespeed.ic.e90NpeXR6I.png

xlinux-logo.png.pagespeed.ic.e90NpeXR6I.png

610 ms

xjava-for-lion-02-402x535.png.pagespeed.ic.njZgKDFTg2.jpg

xjava-for-lion-02-402x535.png.pagespeed.ic.njZgKDFTg2.jpg

149 ms

xPython-logo-notext.svg_.png.pagespeed.ic.Iw7m8GhrqR.png

xPython-logo-notext.svg_.png.pagespeed.ic.Iw7m8GhrqR.png

333 ms

xbrands-fc.png.pagespeed.ic.qSmcg4YNKy.png

xbrands-fc.png.pagespeed.ic.qSmcg4YNKy.png

332 ms

xbrands-html.png.pagespeed.ic.-h-Dr0IwzA.png

xbrands-html.png.pagespeed.ic.-h-Dr0IwzA.png

314 ms

xbrands-js.png.pagespeed.ic.9YjcplLZp3.png

xbrands-js.png.pagespeed.ic.9YjcplLZp3.png

313 ms

xbrands-php.png.pagespeed.ic.qU5R2NQBOI.png

xbrands-php.png.pagespeed.ic.qU5R2NQBOI.png

422 ms

xdotnet.png.pagespeed.ic.PvYV0ol4-j.png

xdotnet.png.pagespeed.ic.PvYV0ol4-j.png

332 ms

xslimmejongens.png.pagespeed.ic.tKjC0euzL3.png

xslimmejongens.png.pagespeed.ic.tKjC0euzL3.png

425 ms

xabnamro.png.pagespeed.ic.Hmm7YbUqRV.png

xabnamro.png.pagespeed.ic.Hmm7YbUqRV.png

426 ms

xredbull.png.pagespeed.ic.ZgasOIX2Kq.png

xredbull.png.pagespeed.ic.ZgasOIX2Kq.png

426 ms

xmicrosoft.png.pagespeed.ic.Lhn6NpLBnq.png

xmicrosoft.png.pagespeed.ic.Lhn6NpLBnq.png

510 ms

xcoolblue.png.pagespeed.ic.dCOTrNUMoq.png

xcoolblue.png.pagespeed.ic.dCOTrNUMoq.png

516 ms

xgoogle-logo-small.png.pagespeed.ic.9sVKsKhpcP.png

xgoogle-logo-small.png.pagespeed.ic.9sVKsKhpcP.png

523 ms

xapple-logo-small.png.pagespeed.ic.PKUSYhPhnt.png

xapple-logo-small.png.pagespeed.ic.PKUSYhPhnt.png

524 ms

xlinkedin-logo-small.png.pagespeed.ic.iDK5bEvxNT.png

xlinkedin-logo-small.png.pagespeed.ic.iDK5bEvxNT.png

607 ms

gtm.js

gtm.js

66 ms

128203046

128203046

82 ms

xhackathon-bgpattern.jpg.pagespeed.ic.hFOAIk-dHf.png

xhackathon-bgpattern.jpg.pagespeed.ic.hFOAIk-dHf.png

602 ms

xhackathon-headerbg.jpg.pagespeed.ic.E_CM7LfQah.jpg

xhackathon-headerbg.jpg.pagespeed.ic.E_CM7LfQah.jpg

1020 ms

xtimer-wires-left.png.pagespeed.ic.2ukIPoytPu.png

xtimer-wires-left.png.pagespeed.ic.2ukIPoytPu.png

738 ms

xtimer-wires-right.png.pagespeed.ic.GcvPQlYOR-.png

xtimer-wires-right.png.pagespeed.ic.GcvPQlYOR-.png

738 ms

xhackathon-signupbg.jpg.pagespeed.ic.kcTktUlSox.jpg

xhackathon-signupbg.jpg.pagespeed.ic.kcTktUlSox.jpg

854 ms

xhackathon-signup-left.png.pagespeed.ic.K4XD2-zOEC.png

xhackathon-signup-left.png.pagespeed.ic.K4XD2-zOEC.png

736 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

26 ms

embed

embed

271 ms

player.js

player.js

134 ms

player.css

player.css

134 ms

ga.js

ga.js

86 ms

vuid.min.js

vuid.min.js

128 ms

analytics.js

analytics.js

48 ms

conversion_async.js

conversion_async.js

47 ms

fbds.js

fbds.js

90 ms

hotjar-80569.js

hotjar-80569.js

219 ms

153 ms

collect

collect

29 ms

collect

collect

165 ms

__utm.gif

__utm.gif

36 ms

216 ms

proxy.html

proxy.html

99 ms

57 ms

js

js

149 ms

init_embed.js

init_embed.js

139 ms

modules-043c1e6abe660c48857202e419ff9d8a.js

modules-043c1e6abe660c48857202e419ff9d8a.js

57 ms

ga-audiences

ga-audiences

74 ms

common.js

common.js

88 ms

map.js

map.js

127 ms

google4.png

google4.png

163 ms

overlay.js

overlay.js

160 ms

util.js

util.js

157 ms

onion.js

onion.js

155 ms

search_impl.js

search_impl.js

154 ms

visit-data

visit-data

254 ms

stats.js

stats.js

54 ms

ViewportInfoService.GetViewportInfo

ViewportInfoService.GetViewportInfo

74 ms

ViewportInfoService.GetViewportInfo

ViewportInfoService.GetViewportInfo

61 ms

transparent.png

transparent.png

58 ms

kh

kh

168 ms

controls.js

controls.js

130 ms

53d12c7963082662ff2d65a461b7648a

53d12c7963082662ff2d65a461b7648a

96 ms

30 ms

Accessibility Review

devbattle.nl accessibility score

66

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.

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

devbattle.nl best practices score

75

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

Browser errors were logged to the console

SEO Factors

devbattle.nl SEO score

93

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

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Devbattle.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Devbattle.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

devbattle.nl

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