Tools & Wizards About Us
appdevcon.nl screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

appdevcon.nl

Appdevcon is a conference by app developers, for app developers.

Page Load Speed

11.4 sec in total

First Response

499 ms

Resources Loaded

10.7 sec

Page Rendered

267 ms

appdevcon.nl screenshot

About Website

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

Appdevcon. Four days with multiple tracks, whether you’re an Android, iOS, Windows, Web, TV or developer, there’s always one session for you.

Visit appdevcon.nl

Key Findings

We analyzed Appdevcon.nl page load time and found that the first response time was 499 ms and then it took 10.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

appdevcon.nl performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value1,370 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.242

51/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

Network Requests Diagram

appdevcon.nl

499 ms

uc.js

25 ms

style.min.css

97 ms

appdevcon-schedule-public.css

190 ms

style.css

271 ms

Our browser made a total of 118 requests to load all elements on the main page. We found that 95% of them (112 requests) were addressed to the original Appdevcon.nl, 1% (1 request) were made to Consent.cookiebot.com and 1% (1 request) were made to Js-eu1.hsforms.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Appdevcon.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 226.5 kB (15%)

Content Size

1.5 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Appdevcon.nl main page is 1.5 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. 50% of websites need less resources to load. Images take 854.2 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 141.3 kB

  • Original 161.5 kB
  • After minification 158.6 kB
  • After compression 20.2 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 141.3 kB or 87% of the original size.

Image Optimization

-9%

Potential reduce by 72.7 kB

  • Original 854.2 kB
  • After minification 781.5 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. Appdevcon images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 9.3 kB

  • Original 263.0 kB
  • After minification 263.0 kB
  • After compression 253.6 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

-2%

Potential reduce by 3.2 kB

  • Original 193.7 kB
  • After minification 193.7 kB
  • After compression 190.5 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. Appdevcon.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 81 (72%)

Requests Now

113

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Appdevcon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 76 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

appdevcon.nl

appdevcon.nl

499 ms

uc.js

uc.js

25 ms

style.min.css

style.min.css

97 ms

appdevcon-schedule-public.css

appdevcon-schedule-public.css

190 ms

style.css

style.css

271 ms

fbb58ef57fdbbad00819092607723c98.min.css

fbb58ef57fdbbad00819092607723c98.min.css

595 ms

tabs-lg-min.min.css

tabs-lg-min.min.css

284 ms

min-shbp.min.css

min-shbp.min.css

282 ms

min-768-max-1024-l.min.css

min-768-max-1024-l.min.css

642 ms

min-sh-cbp.min.css

min-sh-cbp.min.css

283 ms

jquery.min.js

jquery.min.js

449 ms

appdevcon-schedule-public.js

appdevcon-schedule-public.js

695 ms

shell.js

shell.js

578 ms

bootstrap.min.js

bootstrap.min.js

35 ms

33b9a94226260a1aaa9f31b20366b07c.min.js

33b9a94226260a1aaa9f31b20366b07c.min.js

810 ms

gtm.js

gtm.js

134 ms

935788808

935788808

293 ms

appdevconlogo.png

appdevconlogo.png

112 ms

appdevconlogox2.png

appdevconlogox2.png

112 ms

babd-400o400o2-hxhTWjfKSf27U5NMCZ7USy-300x300.png

babd-400o400o2-hxhTWjfKSf27U5NMCZ7USy-300x300.png

1610 ms

3d98-400o400o1-4GUSkTnMr8zDj7Pif4rS5C-300x300.jpg

3d98-400o400o1-4GUSkTnMr8zDj7Pif4rS5C-300x300.jpg

185 ms

de8a-400o400o1-MFoSvsfmB6bABqh2KBwqnW-300x300.jpg

de8a-400o400o1-MFoSvsfmB6bABqh2KBwqnW-300x300.jpg

110 ms

2102-400o400o1-Dbh3jNbrkDNdSH1q1zAJmr-2-300x300.png

2102-400o400o1-Dbh3jNbrkDNdSH1q1zAJmr-2-300x300.png

175 ms

77ce-400o400o1-fxMWuHnNurxXrgR3uNoJWm-300x300.jpg

77ce-400o400o1-fxMWuHnNurxXrgR3uNoJWm-300x300.jpg

294 ms

c6df-400o400o1-44C9EtotQmuGDywyJA6DbC-300x300.jpg

c6df-400o400o1-44C9EtotQmuGDywyJA6DbC-300x300.jpg

288 ms

24dc-400o400o1-sZ8qevh2buTGRUqZDEDr7v-2-300x300.jpe

24dc-400o400o1-sZ8qevh2buTGRUqZDEDr7v-2-300x300.jpe

196 ms

0ab6-400o400o1-NcS3QLJYZyY9nAFyeWSsMJ-300x300.jpg

0ab6-400o400o1-NcS3QLJYZyY9nAFyeWSsMJ-300x300.jpg

264 ms

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5b08-400o400o1-e0-fcfd-43f2-9635-9e5bf687ae7d.c21e5a80-f791-44f3-952d-c8438668bf7c-300x300.png

452 ms

b5d2-400o400o1-R1VStAs1GpSnBMvWyA3GsT-300x300.jpg

b5d2-400o400o1-R1VStAs1GpSnBMvWyA3GsT-300x300.jpg

287 ms

1746-400o400o1-MQaJ8BHaSsLBs4oUMWwrbV-300x300.jpg

1746-400o400o1-MQaJ8BHaSsLBs4oUMWwrbV-300x300.jpg

353 ms

30f1-400o400o1-PzANhX3cUAirSAzgKMcKum-300x300.png

30f1-400o400o1-PzANhX3cUAirSAzgKMcKum-300x300.png

465 ms

Videos-378x252.jpg

Videos-378x252.jpg

379 ms

logo-egeniq-292x227.png

logo-egeniq-292x227.png

477 ms

mybitgroup-logox.png

mybitgroup-logox.png

442 ms

ibuildings.png

ibuildings.png

786 ms

become-a-sponsor-250x194.png

become-a-sponsor-250x194.png

530 ms

become-a-sponsor-200x155.png

become-a-sponsor-200x155.png

540 ms

become-a-sponsor-150x116.png

become-a-sponsor-150x116.png

554 ms

Appril-Sponsor-150x116.png

Appril-Sponsor-150x116.png

570 ms

logo-dutchaug-150x116.png

logo-dutchaug-150x116.png

620 ms

logo-cocoaheads-150x116.png

logo-cocoaheads-150x116.png

630 ms

logo-appsterdam-150x116.png

logo-appsterdam-150x116.png

643 ms

logo-dutch-kotlin-150x116.png

logo-dutch-kotlin-150x116.png

663 ms

Flutter-Netherlands-transparent-1-150x116.png

Flutter-Netherlands-transparent-1-150x116.png

709 ms

Mastodon-logow.png

Mastodon-logow.png

718 ms

fa-brands-400.woff

fa-brands-400.woff

657 ms

fa-solid-900.woff

fa-solid-900.woff

773 ms

fa-regular-400.woff

fa-regular-400.woff

721 ms

awb-icons.woff

awb-icons.woff

712 ms

1835539728-f601ea8653565c2d63a9c29c145878c3ee92140b5c6620219d7e280f58023546-d

1835539728-f601ea8653565c2d63a9c29c145878c3ee92140b5c6620219d7e280f58023546-d

240 ms

fullwidth-md.min.css

fullwidth-md.min.css

95 ms

fullwidth-sm.min.css

fullwidth-sm.min.css

95 ms

icon-md.min.css

icon-md.min.css

94 ms

icon-sm.min.css

icon-sm.min.css

95 ms

grid-md.min.css

grid-md.min.css

95 ms

grid-sm.min.css

grid-sm.min.css

95 ms

image-md.min.css

image-md.min.css

95 ms

image-sm.min.css

image-sm.min.css

95 ms

person-md.min.css

person-md.min.css

95 ms

person-sm.min.css

person-sm.min.css

95 ms

section-separator-md.min.css

section-separator-md.min.css

94 ms

section-separator-sm.min.css

section-separator-sm.min.css

94 ms

social-sharing-md.min.css

social-sharing-md.min.css

96 ms

social-sharing-sm.min.css

social-sharing-sm.min.css

95 ms

social-links-md.min.css

social-links-md.min.css

95 ms

social-links-sm.min.css

social-links-sm.min.css

95 ms

tabs-lg-max.min.css

tabs-lg-max.min.css

95 ms

tabs-md.min.css

tabs-md.min.css

95 ms

tabs-sm.min.css

tabs-sm.min.css

95 ms

title-md.min.css

title-md.min.css

96 ms

title-sm.min.css

title-sm.min.css

95 ms

swiper-md.min.css

swiper-md.min.css

95 ms

swiper-sm.min.css

swiper-sm.min.css

95 ms

post-cards-md.min.css

post-cards-md.min.css

95 ms

post-cards-sm.min.css

post-cards-sm.min.css

95 ms

facebook-page-md.min.css

facebook-page-md.min.css

95 ms

facebook-page-sm.min.css

facebook-page-sm.min.css

95 ms

twitter-timeline-md.min.css

twitter-timeline-md.min.css

95 ms

twitter-timeline-sm.min.css

twitter-timeline-sm.min.css

95 ms

flickr-md.min.css

flickr-md.min.css

94 ms

flickr-sm.min.css

flickr-sm.min.css

95 ms

tagcloud-md.min.css

tagcloud-md.min.css

95 ms

tagcloud-sm.min.css

tagcloud-sm.min.css

95 ms

instagram-md.min.css

instagram-md.min.css

95 ms

instagram-sm.min.css

instagram-sm.min.css

95 ms

meta-md.min.css

meta-md.min.css

95 ms

meta-sm.min.css

meta-sm.min.css

95 ms

layout-columns-md.min.css

layout-columns-md.min.css

95 ms

layout-columns-sm.min.css

layout-columns-sm.min.css

95 ms

max-1c.min.css

max-1c.min.css

95 ms

max-2c.min.css

max-2c.min.css

95 ms

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min-2c-max-3c.min.css

95 ms

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min-3c-max-4c.min.css

95 ms

min-4c-max-5c.min.css

min-4c-max-5c.min.css

95 ms

min-5c-max-6c.min.css

min-5c-max-6c.min.css

96 ms

max-shbp.min.css

max-shbp.min.css

95 ms

max-sh-shbp.min.css

max-sh-shbp.min.css

94 ms

min-768-max-1024-p.min.css

min-768-max-1024-p.min.css

95 ms

max-sh-cbp.min.css

max-sh-cbp.min.css

95 ms

max-sh-sbp.min.css

max-sh-sbp.min.css

95 ms

max-sh-640.min.css

max-sh-640.min.css

95 ms

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max-shbp-18.min.css

95 ms

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max-shbp-32.min.css

95 ms

max-640.min.css

max-640.min.css

94 ms

max-main.min.css

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95 ms

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98 ms

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max-sh-cbp-social-sharing.min.css

94 ms

max-sh-cbp.min.css

max-sh-cbp.min.css

95 ms

min-768-max-1024-p.min.css

min-768-max-1024-p.min.css

95 ms

max-640.min.css

max-640.min.css

94 ms

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max-1c.css

95 ms

max-2c.css

max-2c.css

95 ms

min-2c-max-3c.css

min-2c-max-3c.css

95 ms

min-3c-max-4c.css

min-3c-max-4c.css

94 ms

min-4c-max-5c.css

min-4c-max-5c.css

95 ms

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95 ms

off-canvas-md.min.css

off-canvas-md.min.css

94 ms

off-canvas-sm.min.css

off-canvas-sm.min.css

94 ms

Accessibility Review

appdevcon.nl accessibility score

93

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

Links do not have a discernible name

Best Practices

appdevcon.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Missing source maps for large first-party JavaScript

SEO Factors

appdevcon.nl SEO score

100

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

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 Appdevcon.nl 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 Appdevcon.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

appdevcon.nl

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