Tools & Wizards About Us
learnscratch.org screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

learnscratch.org

Online Computer science Tutors: Get Help with Computer science Online

Page Load Speed

2.9 sec in total

First Response

10 ms

Resources Loaded

1.4 sec

Page Rendered

1.5 sec

learnscratch.org screenshot

About Website

Welcome to learnscratch.org homepage info - get ready to check Learnscratch best content for United States right away, or after learning these important things about learnscratch.org

Need help with Computer science? Hire a professional computer science tutor for online classes to help you with your homework or improve your grades. Book a lesson now!

Visit learnscratch.org

Key Findings

We analyzed Learnscratch.org page load time and found that the first response time was 10 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

learnscratch.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value3,220 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value18.3 s

3/100

10%

Network Requests Diagram

learnscratch.org

10 ms

computer-tutors

145 ms

computer-tutors

826 ms

datadog-rum.js

132 ms

default-tokyo-ui.svg

153 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Learnscratch.org, 79% (64 requests) were made to Static.preply.com and 14% (11 requests) were made to Avatars.preply.com. The less responsive or slowest element that took the longest time to load (826 ms) relates to the external source Preply.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (38%)

Content Size

3.2 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Learnscratch.org main page is 3.2 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. Only a small number of websites need less resources to load. Javascripts take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 1.2 MB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 229.9 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 1.2 MB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 6.6 kB

  • Original 169.8 kB
  • After minification 163.2 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. Learnscratch images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 945 B

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 1.6 MB

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.

Requests Breakdown

Number of requests can be reduced by 59 (76%)

Requests Now

78

After Optimization

19

  • Images
  • JavaScript

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Learnscratch. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 55 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

learnscratch.org

learnscratch.org

10 ms

computer-tutors

computer-tutors

145 ms

computer-tutors

computer-tutors

826 ms

datadog-rum.js

datadog-rum.js

132 ms

default-tokyo-ui.svg

default-tokyo-ui.svg

153 ms

avatar_8qse9n86o1d.jpg

avatar_8qse9n86o1d.jpg

149 ms

qwe.gif

qwe.gif

294 ms

qweqwe.gif

qweqwe.gif

299 ms

avatar_xj6ue8dz4h.jpg

avatar_xj6ue8dz4h.jpg

110 ms

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avatar_xt86m5d981.jpg

113 ms

avatar_6qluq7dsrvi.jpg

avatar_6qluq7dsrvi.jpg

114 ms

avatar_joq4quewpre.jpg

avatar_joq4quewpre.jpg

116 ms

avatar_o60ep7ei8j.jpg

avatar_o60ep7ei8j.jpg

117 ms

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avatar_sbpm75mqv0d.jpg

127 ms

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128 ms

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128 ms

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avatar_7jyq54f1e3r.jpg

129 ms

ca.svg

ca.svg

110 ms

us.svg

us.svg

113 ms

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97 ms

user_default.gif

user_default.gif

82 ms

pk.svg

pk.svg

84 ms

in.svg

in.svg

87 ms

cm.svg

cm.svg

96 ms

eg.svg

eg.svg

103 ms

app_store_badge_en-79b8b5a578eb1f4d7bf116fad64f53e6.svg

app_store_badge_en-79b8b5a578eb1f4d7bf116fad64f53e6.svg

99 ms

google_play_badge_en-99874120ff7b66206b0188ae0e2801ac.png

google_play_badge_en-99874120ff7b66206b0188ae0e2801ac.png

105 ms

polyfills-c67a75d1b6f99dc8.js

polyfills-c67a75d1b6f99dc8.js

101 ms

8228-c72562d384666895.js

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95 ms

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250 ms

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251 ms

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253 ms

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search-card-side-panel.a49fbf3a50e66a76.js

251 ms

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252 ms

framework-19fa3454641a47fe.js

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254 ms

main-bef52f72e29b0b3b.js

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255 ms

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Accessibility Review

learnscratch.org accessibility score

73

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

[role]s are not contained by their required parent element

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

learnscratch.org best practices score

83

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

learnscratch.org SEO score

87

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

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

    EN

  • Encoding

    UTF-8

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

learnscratch.org

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