Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

lernu.net

A multilingual site for learning the international language Esperanto - lernu.net

Page Load Speed

7.5 sec in total

First Response

729 ms

Resources Loaded

6 sec

Page Rendered

686 ms

lernu.net screenshot

About Website

Welcome to lernu.net homepage info - get ready to check Lernu best content for Indonesia right away, or after learning these important things about lernu.net

A multilingual website for learning the international language Esperanto

Visit lernu.net

Key Findings

We analyzed Lernu.net page load time and found that the first response time was 729 ms and then it took 6.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

lernu.net performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.0 s

53/100

10%

Network Requests Diagram

en.lernu.net

729 ms

stilo_6.css

114 ms

cxefpagxo.css

220 ms

superbibl.js

222 ms

funkcioj.js

226 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Lernu.net, 13% (10 requests) were made to Static.xx.fbcdn.net and 10% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Static.xx.fbcdn.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 251.9 kB (50%)

Content Size

501.4 kB

After Optimization

249.5 kB

In fact, the total size of Lernu.net main page is 501.4 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. 65% of websites need less resources to load. Javascripts take 344.1 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 32.5 kB

  • Original 42.5 kB
  • After minification 39.0 kB
  • After compression 10.0 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 32.5 kB or 76% of the original size.

Image Optimization

-7%

Potential reduce by 5.9 kB

  • Original 80.5 kB
  • After minification 74.6 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. Lernu images are well optimized though.

JavaScript Optimization

-54%

Potential reduce by 185.8 kB

  • Original 344.1 kB
  • After minification 303.9 kB
  • After compression 158.4 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 185.8 kB or 54% of the original size.

CSS Optimization

-81%

Potential reduce by 27.8 kB

  • Original 34.3 kB
  • After minification 28.5 kB
  • After compression 6.5 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. Lernu.net needs all CSS files to be minified and compressed as it can save up to 27.8 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 43 (60%)

Requests Now

72

After Optimization

29

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lernu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

lernu.net accessibility score

95

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

Links do not have a discernible name

Best Practices

lernu.net 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

SEO Factors

lernu.net SEO score

92

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

Links do not have descriptive text

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 Lernu.net 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 Lernu.net 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

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