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ottodot.com screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

ottodot.com

Online Science & Math Classes | Roblox Games

Page Load Speed

7.8 sec in total

First Response

89 ms

Resources Loaded

7.7 sec

Page Rendered

55 ms

ottodot.com screenshot

About Website

Visit ottodot.com now to see the best up-to-date Ottodot content and also check out these interesting facts you probably never knew about ottodot.com

Master every Science & Math concept through Ottodot Online Tuition. Designed based on the Singapore MOE syllabus with experienced MOE teachers. For kids 5-12 year olds.

Visit ottodot.com

Key Findings

We analyzed Ottodot.com page load time and found that the first response time was 89 ms and then it took 7.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

ottodot.com performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value3,840 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value16.0 s

6/100

10%

Network Requests Diagram

www.ottodot.com

89 ms

minified.js

39 ms

focus-within-polyfill.js

71 ms

polyfill.min.js

38 ms

8875.e26292eb.bundle.min.js

130 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Ottodot.com, 63% (52 requests) were made to Static.wixstatic.com and 17% (14 requests) were made to Static.parastorage.com. The less responsive or slowest element that took the longest time to load (7.4 sec) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (46%)

Content Size

2.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Ottodot.com main page is 2.4 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. 55% of websites need less resources to load. HTML takes 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 919.6 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 192.4 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 919.6 kB or 83% of the original size.

Image Optimization

-18%

Potential reduce by 188.1 kB

  • Original 1.0 MB
  • After minification 860.9 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. Obviously, Ottodot needs image optimization as it can save up to 188.1 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 4.3 kB

  • Original 271.5 kB
  • After minification 271.4 kB
  • After compression 267.2 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.

Requests Breakdown

Number of requests can be reduced by 12 (17%)

Requests Now

69

After Optimization

57

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ottodot. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.ottodot.com

www.ottodot.com

89 ms

minified.js

minified.js

39 ms

focus-within-polyfill.js

focus-within-polyfill.js

71 ms

polyfill.min.js

polyfill.min.js

38 ms

8875.e26292eb.bundle.min.js

8875.e26292eb.bundle.min.js

130 ms

thunderbolt-commons.b7a35b00.bundle.min.js

thunderbolt-commons.b7a35b00.bundle.min.js

113 ms

main.d98de0fd.bundle.min.js

main.d98de0fd.bundle.min.js

117 ms

main.renderer.1d21f023.bundle.min.js

main.renderer.1d21f023.bundle.min.js

111 ms

lodash.min.js

lodash.min.js

112 ms

react.production.min.js

react.production.min.js

113 ms

react-dom.production.min.js

react-dom.production.min.js

117 ms

browser-deprecation.bundle.es5.js

browser-deprecation.bundle.es5.js

116 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

116 ms

xfbml.customerchat.js

xfbml.customerchat.js

125 ms

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373 ms

bundle.min.js

bundle.min.js

93 ms

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486 ms

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528 ms

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497 ms

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484 ms

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513 ms

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659 ms

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700 ms

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693 ms

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1909 ms

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1023 ms

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789 ms

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935 ms

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831 ms

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1315 ms

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960 ms

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1171 ms

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1186 ms

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1151 ms

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1864 ms

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1427 ms

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1358 ms

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1397 ms

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2493 ms

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1528 ms

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1607 ms

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1695 ms

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1741 ms

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1782 ms

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1985 ms

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1991 ms

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2122 ms

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2013 ms

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2089 ms

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7393 ms

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1878 ms

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1763 ms

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1810 ms

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1907 ms

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2591 ms

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imda.png

1938 ms

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1788 ms

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1845 ms

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1990 ms

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1801 ms

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3235 ms

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3376 ms

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1631 ms

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1602 ms

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1671 ms

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3763 ms

deprecation-en.v5.html

deprecation-en.v5.html

6 ms

bolt-performance

bolt-performance

17 ms

deprecation-style.v5.css

deprecation-style.v5.css

5 ms

right-arrow.svg

right-arrow.svg

6 ms

Accessibility Review

ottodot.com accessibility score

94

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

Links do not have a discernible name

Best Practices

ottodot.com 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

Page has valid source maps

SEO Factors

ottodot.com SEO score

75

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

Links do not have descriptive text

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 Ottodot.com 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 Ottodot.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

ottodot.com

Open Graph data is detected on the main page of Ottodot. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: