Tools & Wizards About Us
biovenn.nl screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

biovenn.nl

BioVenn - a web application for the comparison and visualization of biological lists using area-proportional Venn diagrams

Page Load Speed

1 sec in total

First Response

364 ms

Resources Loaded

568 ms

Page Rendered

72 ms

biovenn.nl screenshot

About Website

Visit biovenn.nl now to see the best up-to-date Bio Venn content for United States and also check out these interesting facts you probably never knew about biovenn.nl

Venn diagram generator. Please use it for the creation of area-proportional Venn diagrams for scientific publications and presentations. Give it a try!

Visit biovenn.nl

Key Findings

We analyzed Biovenn.nl page load time and found that the first response time was 364 ms and then it took 640 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

biovenn.nl performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value1.2 s

100/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.5 s

100/100

10%

Network Requests Diagram

biovenn.nl

364 ms

biovenn.css

87 ms

js

33 ms

badge.gif

16 ms

biovenn.svg

87 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that 60% of them (3 requests) were addressed to the original Biovenn.nl, 40% (2 requests) were made to Static.getclicky.com. The less responsive or slowest element that took the longest time to load (364 ms) belongs to the original domain Biovenn.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 28.9 kB (89%)

Content Size

32.6 kB

After Optimization

3.7 kB

  • HTML
  • CSS

In fact, the total size of Biovenn.nl main page is 32.6 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. Only 5% of websites need less resources to load. HTML takes 32.4 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 28.8 kB

  • Original 32.4 kB
  • After minification 32.4 kB
  • After compression 3.5 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 28.8 kB or 89% of the original size.

CSS Optimization

-14%

Potential reduce by 32 B

  • Original 228 B
  • After minification 228 B
  • After compression 196 B

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. Biovenn.nl needs all CSS files to be minified and compressed as it can save up to 32 B or 14% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bio Venn. According to our analytics all requests are already optimized.

Network Requests Diagram

biovenn.nl

biovenn.nl

364 ms

biovenn.css

biovenn.css

87 ms

js

js

33 ms

badge.gif

badge.gif

16 ms

biovenn.svg

biovenn.svg

87 ms

Accessibility Review

biovenn.nl accessibility score

63

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

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

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

<object> elements do not have alternate text

Best Practices

biovenn.nl best practices score

75

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

SEO Factors

biovenn.nl SEO score

75

Search Engine Optimization Advices

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 Biovenn.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 Biovenn.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

biovenn.nl

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