Tools & Wizards About Us
community.dfrobot.com screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

community.dfrobot.com

DFRobot Maker Community - A community dedicated to learning open source hardware and sharing maker stories.

Page Load Speed

2.9 sec in total

First Response

60 ms

Resources Loaded

1.9 sec

Page Rendered

855 ms

community.dfrobot.com screenshot

About Website

Visit community.dfrobot.com now to see the best up-to-date Community DFRobot content for India and also check out these interesting facts you probably never knew about community.dfrobot.com

DFRobot Maker Community is built for recording what you create. From makers to learners, come share your project experience and find step-by-step tutorials here. Let’s create.

Visit community.dfrobot.com

Key Findings

We analyzed Community.dfrobot.com page load time and found that the first response time was 60 ms and then it took 2.8 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

community.dfrobot.com performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value390 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value5.0 s

77/100

10%

Network Requests Diagram

community.dfrobot.com

60 ms

community.dfrobot.com

750 ms

iconfont.css

15 ms

css

84 ms

css

96 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 24% of them (19 requests) were addressed to the original Community.dfrobot.com, 71% (55 requests) were made to Dfimg.dfrobot.com and 3% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (750 ms) belongs to the original domain Community.dfrobot.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 193.4 kB (14%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images

In fact, the total size of Community.dfrobot.com main page is 1.4 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. 35% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 109.0 kB

  • Original 133.4 kB
  • After minification 132.9 kB
  • After compression 24.4 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 109.0 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 84.4 kB

  • Original 1.3 MB
  • After minification 1.2 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. Community DFRobot images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 13 (30%)

Requests Now

44

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Community DFRobot. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

community.dfrobot.com

community.dfrobot.com

60 ms

community.dfrobot.com

community.dfrobot.com

750 ms

iconfont.css

iconfont.css

15 ms

css

css

84 ms

css

css

96 ms

pc.css

pc.css

31 ms

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jquery-2.1.1.min.js

57 ms

md5.min.js

md5.min.js

42 ms

js

js

152 ms

ga.js

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39 ms

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48 ms

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55 ms

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55 ms

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83 ms

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45 ms

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174 ms

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471 ms

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494 ms

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551 ms

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572 ms

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561 ms

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555 ms

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567 ms

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636 ms

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661 ms

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656 ms

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643 ms

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188 ms

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19 ms

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565 ms

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531 ms

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554 ms

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529 ms

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534 ms

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570 ms

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576 ms

Accessibility Review

community.dfrobot.com accessibility score

62

Accessibility Issues

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

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

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

community.dfrobot.com best practices score

67

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

community.dfrobot.com SEO score

98

Search Engine Optimization Advices

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 Community.dfrobot.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 Community.dfrobot.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

community.dfrobot.com

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