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gemmarduino.com screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% 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

  • 83

    SEO

    Google-friendlier than
    46% of websites

gemmarduino.com

安全检测

Page Load Speed

619 ms in total

First Response

210 ms

Resources Loaded

329 ms

Page Rendered

80 ms

gemmarduino.com screenshot

About Website

Welcome to gemmarduino.com homepage info - get ready to check Gemmarduino best content right away, or after learning these important things about gemmarduino.com

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Key Findings

We analyzed Gemmarduino.com page load time and found that the first response time was 210 ms and then it took 409 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

gemmarduino.com performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.6 s

100/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

Network Requests Diagram

gemmarduino.com

210 ms

suspendedpage.cgi

95 ms

font-awesome.min.css

6 ms

fontawesome-webfont.woff

3 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that 50% of them (2 requests) were addressed to the original Gemmarduino.com, 50% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (210 ms) belongs to the original domain Gemmarduino.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.7 kB (70%)

Content Size

31.0 kB

After Optimization

9.4 kB

  • HTML
  • CSS

In fact, the total size of Gemmarduino.com main page is 31.0 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. CSS take 23.7 kB which makes up the majority of the site volume.

HTML Optimization

-46%

Potential reduce by 3.4 kB

  • Original 7.3 kB
  • After minification 7.0 kB
  • After compression 3.9 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 3.4 kB or 46% of the original size.

CSS Optimization

-77%

Potential reduce by 18.3 kB

  • Original 23.7 kB
  • After minification 23.7 kB
  • After compression 5.4 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. Gemmarduino.com needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

  • CSS

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gemmarduino. According to our analytics all requests are already optimized.

Network Requests Diagram

gemmarduino.com

gemmarduino.com

210 ms

suspendedpage.cgi

suspendedpage.cgi

95 ms

font-awesome.min.css

font-awesome.min.css

6 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

3 ms

Accessibility Review

gemmarduino.com 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

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

gemmarduino.com 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

SEO Factors

gemmarduino.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gemmarduino.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Gemmarduino.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

gemmarduino.com

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