Tools & Wizards About Us

Report Summary

  • 77

    Performance

    Renders faster than
    84% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

slidescience.co

Slide Science - Learn how to build CEO-ready slide decks

Page Load Speed

1.1 sec in total

First Response

56 ms

Resources Loaded

802 ms

Page Rendered

204 ms

About Website

Visit slidescience.co now to see the best up-to-date Slide Science content and also check out these interesting facts you probably never knew about slidescience.co

Learn the science that strategy consultants use to build slide decks that are logical, evidence based and compelling.

Visit slidescience.co

Key Findings

We analyzed Slidescience.co page load time and found that the first response time was 56 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

slidescience.co performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

76/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

94/100

25%

SI (Speed Index)

Value2.3 s

99/100

10%

TBT (Total Blocking Time)

Value530 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.8 s

44/100

10%

Network Requests Diagram

slidescience.co

56 ms

style.css

12 ms

bootstrap.min.css

74 ms

fontawesome.min.css

66 ms

style.css

31 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 59% of them (19 requests) were addressed to the original Slidescience.co, 9% (3 requests) were made to Googletagmanager.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (216 ms) relates to the external source Px.ads.linkedin.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.2 kB (17%)

Content Size

443.7 kB

After Optimization

368.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Slidescience.co main page is 443.7 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. 60% of websites need less resources to load. Images take 164.3 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 59.5 kB

  • Original 77.2 kB
  • After minification 77.2 kB
  • After compression 17.7 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 59.5 kB or 77% of the original size.

Image Optimization

-9%

Potential reduce by 15.2 kB

  • Original 164.3 kB
  • After minification 149.1 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. Slide Science images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 239 B

  • Original 159.0 kB
  • After minification 159.0 kB
  • After compression 158.8 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

-1%

Potential reduce by 271 B

  • Original 43.3 kB
  • After minification 43.3 kB
  • After compression 43.0 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. Slidescience.co has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (69%)

Requests Now

29

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Slide Science. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

slidescience.co accessibility score

90

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.

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

Image elements do not have [alt] attributes

Best Practices

slidescience.co best practices score

92

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

Page has valid source maps

SEO Factors

slidescience.co SEO score

93

Search Engine Optimization Advices

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 Slidescience.co 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 Slidescience.co 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 Slide Science. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: