Report Summary

  • 28

    Performance

    Renders faster than
    49% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

uml-diagrams.org

Unified Modeling Language (UML) description, UML diagram examples, tutorials and reference for all types of UML diagrams - use case diagrams, class, p...

Page Load Speed

2.9 sec in total

First Response

103 ms

Resources Loaded

1.9 sec

Page Rendered

854 ms

uml-diagrams.org screenshot

About Website

Click here to check amazing UML Diagrams content for Sri Lanka. Otherwise, check out these important facts you probably never knew about uml-diagrams.org

The Unified Modeling Language (UML) is a standard visual modeling language to document business processes and software architecture using several types of diagrams - use case diagrams, class, package,...

Visit uml-diagrams.org

Key Findings

We analyzed Uml-diagrams.org page load time and found that the first response time was 103 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

uml-diagrams.org performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

66/100

25%

SI (Speed Index)

Value19.9 s

0/100

10%

TBT (Total Blocking Time)

Value13,040 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.306

38/100

15%

TTI (Time to Interactive)

Value41.9 s

0/100

10%

Network Requests Diagram

uml-diagrams.org

103 ms

www.uml-diagrams.org

110 ms

style.css

57 ms

show_ads.js

5 ms

brand

14 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 6% of them (6 requests) were addressed to the original Uml-diagrams.org, 11% (10 requests) were made to A.disquscdn.com and 8% (7 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (413 ms) relates to the external source Api.adsnative.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 517.3 kB (56%)

Content Size

921.5 kB

After Optimization

404.2 kB

In fact, the total size of Uml-diagrams.org main page is 921.5 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. 70% of websites need less resources to load. Javascripts take 726.9 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 32.5 kB

  • Original 44.9 kB
  • After minification 44.4 kB
  • After compression 12.4 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 32.5 kB or 72% of the original size.

Image Optimization

-3%

Potential reduce by 4.9 kB

  • Original 149.7 kB
  • After minification 144.8 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. UML Diagrams images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 479.9 kB

  • Original 726.9 kB
  • After minification 726.2 kB
  • After compression 247.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 479.9 kB or 66% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (60%)

Requests Now

83

After Optimization

33

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UML Diagrams. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 37 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

uml-diagrams.org accessibility score

80

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Best Practices

uml-diagrams.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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

uml-diagrams.org SEO score

85

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

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 doesn't use legible font sizes

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 Uml-diagrams.org 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 Uml-diagrams.org 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 UML Diagrams. 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: