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addthis.com screenshot

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

addthis.com

AddThis

Page Load Speed

4.3 sec in total

First Response

769 ms

Resources Loaded

3.4 sec

Page Rendered

104 ms

addthis.com screenshot

About Website

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Key Findings

We analyzed Addthis.com page load time and found that the first response time was 769 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

addthis.com performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.2 s

94/100

10%

Network Requests Diagram

www.addthis.com

769 ms

css

586 ms

bootstrap.min.css

1858 ms

at_main.css

1775 ms

jquery-3.4.1.min.js

2575 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that all of those requests were addressed to Addthis.com and no external sources were called. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Addthis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 241.8 kB (76%)

Content Size

318.4 kB

After Optimization

76.6 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Addthis.com main page is 318.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. CSS take 279.7 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 5.7 kB

  • Original 8.0 kB
  • After minification 6.9 kB
  • After compression 2.3 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. This page needs HTML code to be minified as it can gain 1.1 kB, which is 13% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 5.7 kB or 72% of the original size.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 30.7 kB
  • After minification 30.7 kB
  • After compression 30.7 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

-84%

Potential reduce by 236.1 kB

  • Original 279.7 kB
  • After minification 248.8 kB
  • After compression 43.7 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. Addthis.com needs all CSS files to be minified and compressed as it can save up to 236.1 kB or 84% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

www.addthis.com

www.addthis.com

769 ms

css

css

586 ms

bootstrap.min.css

bootstrap.min.css

1858 ms

at_main.css

at_main.css

1775 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

2575 ms

watch-video.svg

watch-video.svg

1762 ms

Accessibility Review

addthis.com accessibility score

91

Accessibility Issues

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

Best Practices

addthis.com 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

High

Browser errors were logged to the console

SEO Factors

addthis.com SEO score

92

Search Engine Optimization Advices

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 Addthis.com 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 Addthis.com 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

addthis.com

Open Graph data is detected on the main page of Add This. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: