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sequencediagram.org screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sequencediagram.org

SequenceDiagram.org - UML Sequence Diagram Online Tool

Page Load Speed

1.5 sec in total

First Response

52 ms

Resources Loaded

1.4 sec

Page Rendered

61 ms

sequencediagram.org screenshot

About Website

Click here to check amazing Sequence Diagram content for United States. Otherwise, check out these important facts you probably never knew about sequencediagram.org

Free sequence diagram online tool. Create sequence diagrams using textual notation or draw quickly via Drag and Drop with an easy to use interface.

Visit sequencediagram.org

Key Findings

We analyzed Sequencediagram.org page load time and found that the first response time was 52 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

sequencediagram.org performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value2.5 s

97/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

sequencediagram.org

52 ms

sequencediagram.org

339 ms

errorpage.css

483 ms

lightning.svg

488 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 Sequencediagram.org, 25% (1 request) were made to Splash.simply.com and 25% (1 request) were made to Static.simply.com. The less responsive or slowest element that took the longest time to load (488 ms) relates to the external source Static.simply.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 484 B (28%)

Content Size

1.8 kB

After Optimization

1.3 kB

  • HTML
  • CSS

In fact, the total size of Sequencediagram.org main page is 1.8 kB. This result falls within a big category (top 100 000) of medium weight web pages. Only a small number of websites need less resources to load. CSS take 888 B which makes up the majority of the site volume.

HTML Optimization

-45%

Potential reduce by 396 B

  • Original 871 B
  • After minification 852 B
  • After compression 475 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 396 B or 45% of the original size.

CSS Optimization

-10%

Potential reduce by 88 B

  • Original 888 B
  • After minification 888 B
  • After compression 800 B

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. Sequencediagram.org has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

  • Images
  • CSS

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sequence Diagram. According to our analytics all requests are already optimized.

Network Requests Diagram

sequencediagram.org

sequencediagram.org

52 ms

sequencediagram.org

sequencediagram.org

339 ms

errorpage.css

errorpage.css

483 ms

lightning.svg

lightning.svg

488 ms

Accessibility Review

sequencediagram.org accessibility score

96

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.

Best Practices

sequencediagram.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Page has valid source maps

SEO Factors

sequencediagram.org SEO score

92

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sequencediagram.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 Sequencediagram.org main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

sequencediagram.org

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