Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 100

    SEO

    Google-friendlier than
    96% of websites

sustainablog.org

Sustainablog • Since 2003, Sustainablog has been one of the pioneers of sustainability news online.

Page Load Speed

3.3 sec in total

First Response

710 ms

Resources Loaded

1.8 sec

Page Rendered

880 ms

sustainablog.org screenshot

About Website

Click here to check amazing Sustainablog content for United States. Otherwise, check out these important facts you probably never knew about sustainablog.org

Since 2003, Sustainablog has been one of the pioneers of sustainability news online.

Visit sustainablog.org

Key Findings

We analyzed Sustainablog.org page load time and found that the first response time was 710 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster. This domain responded with an error, which can significantly jeopardize Sustainablog.org rating and web reputation

Performance Metrics

sustainablog.org performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

48/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value3,490 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.071

96/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

sustainablog.org

710 ms

wp-emoji-release.min.js

57 ms

137 ms

jquery.js

125 ms

jquery-migrate.min.js

76 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 40% of them (41 requests) were addressed to the original Sustainablog.org, 10% (10 requests) were made to Google.com and 5% (5 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (710 ms) belongs to the original domain Sustainablog.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (54%)

Content Size

2.6 MB

After Optimization

1.2 MB

In fact, the total size of Sustainablog.org main page is 2.6 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. 70% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 134.4 kB

  • Original 180.1 kB
  • After minification 176.2 kB
  • After compression 45.7 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 134.4 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 35.3 kB

  • Original 695.6 kB
  • After minification 660.4 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. Sustainablog images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 873.2 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 415.9 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 873.2 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 387.6 kB

  • Original 465.8 kB
  • After minification 428.8 kB
  • After compression 78.2 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. Sustainablog.org needs all CSS files to be minified and compressed as it can save up to 387.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (57%)

Requests Now

96

After Optimization

41

The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sustainablog. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

sustainablog.org accessibility score

88

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

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

sustainablog.org best practices score

75

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

SEO Factors

sustainablog.org SEO score

100

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sustainablog.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 Sustainablog.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

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