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Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

exolab.org

The Castor Project

Page Load Speed

953 ms in total

First Response

192 ms

Resources Loaded

616 ms

Page Rendered

145 ms

exolab.org screenshot

About Website

Welcome to exolab.org homepage info - get ready to check Exolab best content right away, or after learning these important things about exolab.org

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Key Findings

We analyzed Exolab.org page load time and found that the first response time was 192 ms and then it took 761 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

exolab.org performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value1.4 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

Network Requests Diagram

exolab.org

192 ms

castor.exolab.org

196 ms

default.css

63 ms

dotTrans.gif

131 ms

top_2.gif

128 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 8% of them (1 request) were addressed to the original Exolab.org, 92% (12 requests) were made to Castor.exolab.org. The less responsive or slowest element that took the longest time to load (196 ms) relates to the external source Castor.exolab.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 19.1 kB (83%)

Content Size

23.0 kB

After Optimization

3.9 kB

  • HTML
  • CSS

In fact, the total size of Exolab.org main page is 23.0 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. HTML takes 20.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 16.8 kB

  • Original 20.3 kB
  • After minification 19.3 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 16.8 kB or 83% of the original size.

CSS Optimization

-85%

Potential reduce by 2.3 kB

  • Original 2.7 kB
  • After minification 2.1 kB
  • After compression 422 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. Exolab.org needs all CSS files to be minified and compressed as it can save up to 2.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (73%)

Requests Now

11

After Optimization

3

  • Images
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Exolab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

exolab.org

exolab.org

192 ms

castor.exolab.org

castor.exolab.org

196 ms

default.css

default.css

63 ms

dotTrans.gif

dotTrans.gif

131 ms

top_2.gif

top_2.gif

128 ms

line_purple.gif

line_purple.gif

131 ms

line_sm.gif

line_sm.gif

129 ms

line_light.gif

line_light.gif

130 ms

javanet_button_90.gif

javanet_button_90.gif

129 ms

castor.gif

castor.gif

189 ms

logo_exolab.gif

logo_exolab.gif

189 ms

stripes1.gif

stripes1.gif

189 ms

stripe105.gif

stripe105.gif

190 ms

Accessibility Review

exolab.org accessibility score

53

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

exolab.org best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

exolab.org SEO score

50

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • 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 Exolab.org 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 Exolab.org 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

exolab.org

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