Tools & Wizards About Us
bc-europe.eu screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% 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

  • 91

    SEO

    Google-friendlier than
    70% of websites

bc-europe.eu

De Vlinderstichting | Butterfly Conservation Europe

Page Load Speed

2.7 sec in total

First Response

263 ms

Resources Loaded

2.2 sec

Page Rendered

225 ms

bc-europe.eu screenshot

About Website

Visit bc-europe.eu now to see the best up-to-date Bc Europe content and also check out these interesting facts you probably never knew about bc-europe.eu

Butterfly Conservation Europe is a partnership organisation focused on halting and reversing the decline of butterflies, moths and their habitats throughout Europe.

Visit bc-europe.eu

Key Findings

We analyzed Bc-europe.eu page load time and found that the first response time was 263 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

bc-europe.eu performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

Network Requests Diagram

bc-europe.eu

263 ms

493 ms

gtm.js

103 ms

jquery.min.js

62 ms

bootstrap.min.css

77 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Bc-europe.eu, 21% (12 requests) were made to Cdn-img.newstory.nl and 20% (11 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Cdn-img.newstory.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.0 kB (10%)

Content Size

1.0 MB

After Optimization

913.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bc-europe.eu main page is 1.0 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. 60% of websites need less resources to load. Images take 498.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 33.9 kB

  • Original 41.6 kB
  • After minification 39.5 kB
  • After compression 7.7 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. 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 33.9 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 5.0 kB

  • Original 498.9 kB
  • After minification 493.9 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. Bc Europe images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.5 kB

  • Original 367.3 kB
  • After minification 367.2 kB
  • After compression 365.8 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

-56%

Potential reduce by 57.6 kB

  • Original 103.2 kB
  • After minification 103.0 kB
  • After compression 45.6 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. Bc-europe.eu needs all CSS files to be minified and compressed as it can save up to 57.6 kB or 56% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (39%)

Requests Now

41

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bc Europe. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

bc-europe.eu

bc-europe.eu

263 ms

493 ms

gtm.js

gtm.js

103 ms

jquery.min.js

jquery.min.js

62 ms

bootstrap.min.css

bootstrap.min.css

77 ms

style.css

style.css

60 ms

css

css

75 ms

font-awesome.css

font-awesome.css

74 ms

bap7sfe.js

bap7sfe.js

114 ms

lightbox.css

lightbox.css

83 ms

lightbox.min.js

lightbox.min.js

90 ms

bootstrap.min.js

bootstrap.min.js

93 ms

misc.js

misc.js

71 ms

api.js

api.js

82 ms

st.js

st.js

251 ms

close.png

close.png

214 ms

logo-vlinderstichting-nw.svg

logo-vlinderstichting-nw.svg

212 ms

6c8a69ea-1e2f-4c2b-a72b-e6b8fea0fbcc.jpg&h=250&w=1600&v=0

6c8a69ea-1e2f-4c2b-a72b-e6b8fea0fbcc.jpg&h=250&w=1600&v=0

708 ms

recaptcha__en.js

recaptcha__en.js

320 ms

loading.gif

loading.gif

43 ms

prev.png

prev.png

23 ms

next.png

next.png

72 ms

e7f207bc-23a4-4334-9826-ede08e312cf2.png&h=&w=270&v=1512070698

e7f207bc-23a4-4334-9826-ede08e312cf2.png&h=&w=270&v=1512070698

495 ms

34b94292-2f27-43a6-a7a6-6568902dfd1d.jpg&h=&w=370&v=1626270304

34b94292-2f27-43a6-a7a6-6568902dfd1d.jpg&h=&w=370&v=1626270304

475 ms

2e423507-813d-4d75-80dd-1411653b1fd6.jpg&h=400&w=570&v=1586009922

2e423507-813d-4d75-80dd-1411653b1fd6.jpg&h=400&w=570&v=1586009922

555 ms

691d2669-fbbb-4df6-a0a0-181f2542790f.jpg&h=400&w=570&v=1580392593

691d2669-fbbb-4df6-a0a0-181f2542790f.jpg&h=400&w=570&v=1580392593

522 ms

37c26853-c539-4a9f-ac1e-b5d31a9bc3b1.JPG&h=400&w=570&v=1549367098

37c26853-c539-4a9f-ac1e-b5d31a9bc3b1.JPG&h=400&w=570&v=1549367098

601 ms

bcab9aaf-2326-4507-af80-20a234892722.JPG&h=400&w=570&v=1512070698

bcab9aaf-2326-4507-af80-20a234892722.JPG&h=400&w=570&v=1512070698

1016 ms

5944901c-55c4-4df8-88ab-b3c737c3906b.jpg&h=400&w=570&v=1641802786

5944901c-55c4-4df8-88ab-b3c737c3906b.jpg&h=400&w=570&v=1641802786

927 ms

6f2f3d67-e92c-40c5-8f5c-fd86b048b6db.JPG&h=400&w=570&v=1515595704

6f2f3d67-e92c-40c5-8f5c-fd86b048b6db.JPG&h=400&w=570&v=1515595704

952 ms

0f43099e-a3f6-493f-a054-33116bf6e2b4.jpg&h=400&w=570&v=1644328906

0f43099e-a3f6-493f-a054-33116bf6e2b4.jpg&h=400&w=570&v=1644328906

982 ms

1d159984-93eb-4d0e-a54d-d3546d82131e.jpg&h=400&w=570&v=1589806856

1d159984-93eb-4d0e-a54d-d3546d82131e.jpg&h=400&w=570&v=1589806856

1071 ms

9b2d2516-88bf-4629-87a0-1388ae17b043.JPG&h=400&w=570&v=1563285147

9b2d2516-88bf-4629-87a0-1388ae17b043.JPG&h=400&w=570&v=1563285147

1105 ms

logo-vlinderstichting-footer-nw.svg

logo-vlinderstichting-footer-nw.svg

22 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

71 ms

d

d

23 ms

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93 ms

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93 ms

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93 ms

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70 ms

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93 ms

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93 ms

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127 ms

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126 ms

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127 ms

zYNZo8seHUV2-AJG1Pz_.json

zYNZo8seHUV2-AJG1Pz_.json

252 ms

fallback

fallback

22 ms

p.gif

p.gif

19 ms

fallback__ltr.css

fallback__ltr.css

3 ms

css

css

17 ms

logo_48.png

logo_48.png

4 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

14 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

17 ms

new_embed-2552d8d62d9c60f59b3b11a5d083d1ebd090c72de809fc7c76fb339825302241.css

new_embed-2552d8d62d9c60f59b3b11a5d083d1ebd090c72de809fc7c76fb339825302241.css

3 ms

en-us.js

en-us.js

9 ms

cc.js

cc.js

175 ms

Accessibility Review

bc-europe.eu 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

bc-europe.eu 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

Page has valid source maps

SEO Factors

bc-europe.eu SEO score

91

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

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 Bc-europe.eu 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 Bc-europe.eu 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

bc-europe.eu

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