Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

arduino.lk

Arduino.LK – Learn Arduino Course Sinhala | Arduino Tutorials

Page Load Speed

1.6 sec in total

First Response

615 ms

Resources Loaded

835 ms

Page Rendered

147 ms

arduino.lk screenshot

About Website

Welcome to arduino.lk homepage info - get ready to check Arduino best content for Sri Lanka right away, or after learning these important things about arduino.lk

Visit arduino.lk

Key Findings

We analyzed Arduino.lk page load time and found that the first response time was 615 ms and then it took 982 ms 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. This domain responded with an error, which can significantly jeopardize Arduino.lk rating and web reputation

Performance Metrics

arduino.lk performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

3/100

25%

SI (Speed Index)

Value11.3 s

5/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

arduino.lk

615 ms

styles.css

117 ms

logo.gif

108 ms

bkg_body.gif

52 ms

bkg_header.jpg

102 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that all of those requests were addressed to Arduino.lk and no external sources were called. The less responsive or slowest element that took the longest time to load (615 ms) belongs to the original domain Arduino.lk.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.3 kB (14%)

Content Size

44.5 kB

After Optimization

38.2 kB

In fact, the total size of Arduino.lk main page is 44.5 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. Only 10% of websites need less resources to load. Images take 35.3 kB which makes up the majority of the site volume.

HTML Optimization

-55%

Potential reduce by 837 B

  • Original 1.5 kB
  • After minification 1.5 kB
  • After compression 678 B

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 837 B or 55% of the original size.

Image Optimization

-0%

Potential reduce by 6 B

  • Original 35.3 kB
  • After minification 35.3 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. Arduino images are well optimized though.

CSS Optimization

-71%

Potential reduce by 5.5 kB

  • Original 7.7 kB
  • After minification 7.5 kB
  • After compression 2.2 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. Arduino.lk needs all CSS files to be minified and compressed as it can save up to 5.5 kB or 71% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Arduino. According to our analytics all requests are already optimized.

Accessibility Review

arduino.lk accessibility score

76

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

[id] attributes on active, focusable elements are not unique

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

arduino.lk 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

SEO Factors

arduino.lk SEO score

75

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

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

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 Arduino.lk 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 Arduino.lk 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 Arduino. 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: