Tools & Wizards About Us

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

stronggravity.eu

StrongGravity - STRONGGRAVITY – Probing Strong Gravity by Black Holes Across the Range of Masses

Page Load Speed

1.7 sec in total

First Response

476 ms

Resources Loaded

1.1 sec

Page Rendered

126 ms

About Website

Click here to check amazing STRONGGRAVITY content. Otherwise, check out these important facts you probably never knew about stronggravity.eu

StrongGravity is an EU-funded research project provides a dedicated program of data analysis and science interpretation of the environs of the most bizarre cosmic objects - black holes.

Visit stronggravity.eu

Key Findings

We analyzed Stronggravity.eu page load time and found that the first response time was 476 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

stronggravity.eu performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

88/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

93/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

stronggravity.eu

476 ms

stylesheet_combined_2dfe717426fae1d32a084d2e2282879d.css

109 ms

modernizr-2.6.2.min.js

285 ms

jquery.min.js

7 ms

jsrender.min.js

213 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 92% of them (12 requests) were addressed to the original Stronggravity.eu, 8% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (476 ms) belongs to the original domain Stronggravity.eu.

Page Optimization Overview & Recommendations

Page size can be reduced by 12.4 kB (10%)

Content Size

121.1 kB

After Optimization

108.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stronggravity.eu main page is 121.1 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. 15% of websites need less resources to load. Images take 68.3 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 3.9 kB

  • Original 6.4 kB
  • After minification 6.0 kB
  • After compression 2.5 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 3.9 kB or 61% of the original size.

Image Optimization

-8%

Potential reduce by 5.4 kB

  • Original 68.3 kB
  • After minification 62.8 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. STRONGGRAVITY images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 35 B

  • Original 40.2 kB
  • After minification 40.2 kB
  • After compression 40.2 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

-49%

Potential reduce by 3.0 kB

  • Original 6.2 kB
  • After minification 6.2 kB
  • After compression 3.2 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. Stronggravity.eu needs all CSS files to be minified and compressed as it can save up to 3.0 kB or 49% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STRONGGRAVITY. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

stronggravity.eu accessibility score

64

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

stronggravity.eu best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

stronggravity.eu 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

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8"

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stronggravity.eu 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 Stronggravity.eu main page’s claimed encoding is utf-8". 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

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