Tools & Wizards About Us

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 36

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

cleverdeck.com

CleverDeck - Spaced Repetition Flashcards for iPhone

Page Load Speed

1.8 sec in total

First Response

216 ms

Resources Loaded

1.4 sec

Page Rendered

205 ms

About Website

Click here to check amazing Clever Deck content for United States. Otherwise, check out these important facts you probably never knew about cleverdeck.com

Learn more efficiently and remember things longer with the power of science. CleverDeck includes 3000-word decks for most major languages.

Visit cleverdeck.com

Key Findings

We analyzed Cleverdeck.com page load time and found that the first response time was 216 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 30% of websites can load faster.

Performance Metrics

cleverdeck.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

39/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

24/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value1,760 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value15.8 s

6/100

10%

Network Requests Diagram

cleverdeck.com

216 ms

cleverdeck.com

395 ms

css

57 ms

a9302d97e2.js

110 ms

jquery-2.1.4.min.js

43 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Cleverdeck.com, 54% (22 requests) were made to S3.amazonaws.com and 12% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (413 ms) relates to the external source S3.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 29.7 kB (2%)

Content Size

1.7 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cleverdeck.com main page is 1.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 14.2 kB

  • Original 19.1 kB
  • After minification 18.4 kB
  • After compression 4.9 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 14.2 kB or 74% of the original size.

Image Optimization

-1%

Potential reduce by 12.8 kB

  • Original 1.5 MB
  • After minification 1.4 MB

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. Clever Deck images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.6 kB

  • Original 169.1 kB
  • After minification 169.1 kB
  • After compression 166.5 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

-0%

Potential reduce by 62 B

  • Original 66.5 kB
  • After minification 66.5 kB
  • After compression 66.4 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. Cleverdeck.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (50%)

Requests Now

36

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clever Deck. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cleverdeck.com accessibility score

36

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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

cleverdeck.com 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

cleverdeck.com SEO score

92

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

    N/A

  • Encoding

    UTF-8

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

Open Graph description is not detected on the main page of Clever Deck. 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: