Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 62

    Best Practices

    More advanced features
    available than in
    34% of websites

  • 62

    SEO

    Google-friendlier than
    32% of websites

sciencebuzz.org

Homepage | Science Buzz

Page Load Speed

2 sec in total

First Response

303 ms

Resources Loaded

1.5 sec

Page Rendered

145 ms

sciencebuzz.org screenshot

About Website

Visit sciencebuzz.org now to see the best up-to-date Science Buzz content for United States and also check out these interesting facts you probably never knew about sciencebuzz.org

Visit sciencebuzz.org

Key Findings

We analyzed Sciencebuzz.org page load time and found that the first response time was 303 ms and then it took 1.6 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

sciencebuzz.org performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.04

99/100

15%

TTI (Time to Interactive)

Value3.2 s

94/100

10%

Network Requests Diagram

sciencebuzz.org

303 ms

screen.css

94 ms

print.css

143 ms

aggregator.css

156 ms

node.css

169 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 93% of them (53 requests) were addressed to the original Sciencebuzz.org, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (571 ms) belongs to the original domain Sciencebuzz.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 254.4 kB (43%)

Content Size

587.8 kB

After Optimization

333.4 kB

In fact, the total size of Sciencebuzz.org main page is 587.8 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. 35% of websites need less resources to load. Images take 244.4 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 22.1 kB

  • Original 27.9 kB
  • After minification 25.0 kB
  • After compression 5.8 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 22.1 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 4.2 kB

  • Original 244.4 kB
  • After minification 240.3 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. Science Buzz images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 104.7 kB

  • Original 163.0 kB
  • After minification 139.8 kB
  • After compression 58.3 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 104.7 kB or 64% of the original size.

CSS Optimization

-81%

Potential reduce by 123.5 kB

  • Original 152.5 kB
  • After minification 119.1 kB
  • After compression 29.0 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. Sciencebuzz.org needs all CSS files to be minified and compressed as it can save up to 123.5 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (71%)

Requests Now

55

After Optimization

16

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Buzz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

sciencebuzz.org accessibility score

68

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

sciencebuzz.org best practices score

62

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

High

Registers an unload listener

Low

Detected JavaScript libraries

SEO Factors

sciencebuzz.org SEO score

62

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

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 Sciencebuzz.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 Sciencebuzz.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 description is not detected on the main page of Science Buzz. 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: