Tools & Wizards About Us
teslasciencefoundation.org screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    35% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 86

    SEO

    Google-friendlier than
    61% of websites

teslasciencefoundation.org

HOME

Page Load Speed

11.2 sec in total

First Response

2.7 sec

Resources Loaded

6.6 sec

Page Rendered

1.8 sec

teslasciencefoundation.org screenshot

About Website

Visit teslasciencefoundation.org now to see the best up-to-date Teslasciencefoundation content and also check out these interesting facts you probably never knew about teslasciencefoundation.org

The Tesla Science Foundation is a non-profit organization formed to promote the heritage of Nikola Tesla through raising awareness of his achievements and contribution in our daily lives, including hi...

Visit teslasciencefoundation.org

Key Findings

We analyzed Teslasciencefoundation.org page load time and found that the first response time was 2.7 sec and then it took 8.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

teslasciencefoundation.org performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value18.5 s

0/100

25%

SI (Speed Index)

Value10.3 s

8/100

10%

TBT (Total Blocking Time)

Value1,940 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.103

89/100

15%

TTI (Time to Interactive)

Value22.7 s

1/100

10%

Network Requests Diagram

teslasciencefoundation.org

2724 ms

wp-emoji-release.min.js

76 ms

ai1ec_parsed_css.css

318 ms

gtranslate-style24.css

144 ms

css

53 ms

Our browser made a total of 221 requests to load all elements on the main page. We found that 75% of them (166 requests) were addressed to the original Teslasciencefoundation.org, 7% (16 requests) were made to Fonts.gstatic.com and 5% (12 requests) were made to Scontent.cdninstagram.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Teslasciencefoundation.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.1 MB (24%)

Content Size

8.8 MB

After Optimization

6.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Teslasciencefoundation.org main page is 8.8 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. Only a small number of websites need less resources to load. Images take 6.2 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 138.1 kB

  • Original 171.6 kB
  • After minification 164.4 kB
  • After compression 33.5 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 138.1 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 75.8 kB

  • Original 6.2 MB
  • After minification 6.1 MB

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. Teslasciencefoundation images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 869.3 kB

  • Original 1.2 MB
  • After minification 1.1 MB
  • After compression 296.5 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 869.3 kB or 75% of the original size.

CSS Optimization

-82%

Potential reduce by 1.0 MB

  • Original 1.3 MB
  • After minification 1.2 MB
  • After compression 235.8 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. Teslasciencefoundation.org needs all CSS files to be minified and compressed as it can save up to 1.0 MB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 108 (57%)

Requests Now

190

After Optimization

82

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 190 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Teslasciencefoundation. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 57 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

teslasciencefoundation.org

teslasciencefoundation.org

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2273276413562078272_5592013208low.jpg

423 ms

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404 ms

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401 ms

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342 ms

id

id

79 ms

Accessibility Review

teslasciencefoundation.org accessibility score

75

Accessibility Issues

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

teslasciencefoundation.org best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

teslasciencefoundation.org SEO score

86

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

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 Teslasciencefoundation.org 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 Teslasciencefoundation.org 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

teslasciencefoundation.org

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