Access vogelbescherming.nl. Samen voor vogels en natuur

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value12.8 s

0/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value5,670 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

vogelbescherming.nl

271 ms

www.vogelbescherming.nl

1087 ms

layout.css

246 ms

basis.css

243 ms

kaders.css

165 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 76% of them (50 requests) were addressed to the original Vogelbescherming.nl, 5% (3 requests) were made to Storminsights.nl and 3% (2 requests) were made to Dev.visualwebsiteoptimizer.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Vogelbescherming.nl.

Content Size

968.8 kB

After Optimization

642.7 kB

In fact, the total size of Vogelbescherming.nl main page is 968.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 536.4 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 30.6 kB

Original 41.3 kB
After minification 36.5 kB
After compression 10.7 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. This page needs HTML code to be minified as it can gain 4.8 kB, which is 12% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 30.6 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 18.1 kB

Original 536.4 kB
After minification 518.3 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. Vogelbescherming images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 207.7 kB

Original 305.5 kB
After minification 287.9 kB
After compression 97.7 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 207.7 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 69.7 kB

Original 85.7 kB
After minification 62.3 kB
After compression 15.9 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. Vogelbescherming.nl needs all CSS files to be minified and compressed as it can save up to 69.7 kB or 81% of the original size.

Requests Now

After Optimization

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vogelbescherming. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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/).

High

Document doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

NL
Language Claimed

N/A
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vogelbescherming.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch 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 Vogelbescherming.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

vogelbescherming.nl

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Samen voor vogels en natuur | Vogelbescherming

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

vogelbescherming.nl

www.vogelbescherming.nl

layout.css

basis.css

kaders.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

vogelbescherming.nl

www.vogelbescherming.nl

layout.css

basis.css

kaders.css

buttons.css

mods.css

home.css

swfobject_v2.js

flexslider.css

jquery-1.7.2.min.js

jquery.flexslider.js

j.php

fbds.js

v.gif

header_shim_hoger.gif

HPNW-Gruttoweekend-AGHansGermeraad.jpg

HPNW-bdl2016-643x311.jpg

HPnw-vogelsdichterbij.jpg

_cfimg-2559872978761464384.jpg

_cfimg-2938134532323497047.jpg

_cfimg-7360106701705475754.jpg

gtm.js

logo_vbn.png

btn_lidworden_home.png

zoekveld.gif

button_zoeken_wit.gif

btn_actueel.gif

btn_helpmee.gif

btn_vogelskijken.gif

btn_vogelsbeschermen.gif

btn_ikenvogels.gif

btn_overons.gif

btn_shopfun.gif

btn_servicevragen.gif

kijker_vogelgids_home.png

icon_zoek.png

pijltje_witblauw.png

visual_magazine.png

HPnw-bosuil-bdl-webcam.jpg

bg_blok_tips.jpg

pijltje_witgroen.png

HPnw-res-Kluut,-MarkZekhuis-Saxifraga.png