Report Summary

  • 36

    Performance

    Renders faster than
    55% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

campbellcollaboration.org

Campbell Collaboration

Page Load Speed

213 ms in total

First Response

77 ms

Resources Loaded

79 ms

Page Rendered

57 ms

campbellcollaboration.org screenshot

About Website

Welcome to campbellcollaboration.org homepage info - get ready to check Campbell Collaboration best content for Australia right away, or after learning these important things about campbellcollaboration.org

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Key Findings

We analyzed Campbellcollaboration.org page load time and found that the first response time was 77 ms and then it took 136 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

campbellcollaboration.org performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.319

36/100

15%

TTI (Time to Interactive)

Value10.0 s

26/100

10%

Network Requests Diagram

campbellcollaboration.org

77 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Campbellcollaboration.org and no external sources were called. The less responsive or slowest element that took the longest time to load (77 ms) belongs to the original domain Campbellcollaboration.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.2 kB (7%)

Content Size

452.5 kB

After Optimization

419.3 kB

In fact, the total size of Campbellcollaboration.org main page is 452.5 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 433.0 kB which makes up the majority of the site volume.

HTML Optimization

-12%

Potential reduce by 22 B

  • Original 177 B
  • After minification 177 B
  • After compression 155 B

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 22 B or 12% of the original size.

Image Optimization

-5%

Potential reduce by 20.1 kB

  • Original 433.0 kB
  • After minification 412.9 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. Campbell Collaboration images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 8.4 kB

  • Original 13.0 kB
  • After minification 12.8 kB
  • After compression 4.6 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 8.4 kB or 65% of the original size.

CSS Optimization

-74%

Potential reduce by 4.7 kB

  • Original 6.3 kB
  • After minification 5.3 kB
  • After compression 1.7 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. Campbellcollaboration.org needs all CSS files to be minified and compressed as it can save up to 4.7 kB or 74% 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.

Accessibility Review

campbellcollaboration.org accessibility score

67

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

campbellcollaboration.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

campbellcollaboration.org SEO score

98

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Campbellcollaboration.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 Campbellcollaboration.org main page’s claimed encoding is . 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 Campbell Collaboration. 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: