Tools & Wizards About Us

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

cs.helsinki.fi

Computer Science | Faculty of Science | University of Helsinki

Page Load Speed

3 sec in total

First Response

350 ms

Resources Loaded

2.6 sec

Page Rendered

79 ms

About Website

Visit cs.helsinki.fi now to see the best up-to-date Cs Helsinki content for Finland and also check out these interesting facts you probably never knew about cs.helsinki.fi

The Department of Computer Science is the leading Finnish unit in its field. It is responsible for teaching and research in computer science at the University of Helsinki.

Visit cs.helsinki.fi

Key Findings

We analyzed Cs.helsinki.fi page load time and found that the first response time was 350 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cs.helsinki.fi performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value310 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.0 s

43/100

10%

Network Requests Diagram

cs.helsinki.fi

350 ms

cs.helsinki.fi

501 ms

www.cs.helsinki.fi

588 ms

computer-science

651 ms

uc.js

27 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 17% of them (3 requests) were addressed to the original Cs.helsinki.fi, 78% (14 requests) were made to Helsinki.fi and 6% (1 request) were made to Consent.cookiebot.com. The less responsive or slowest element that took the longest time to load (651 ms) relates to the external source Helsinki.fi.

Page Optimization Overview & Recommendations

Page size can be reduced by 137.6 kB (52%)

Content Size

263.9 kB

After Optimization

126.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Cs.helsinki.fi main page is 263.9 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. 15% of websites need less resources to load. HTML takes 144.3 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 111.3 kB

  • Original 144.3 kB
  • After minification 129.0 kB
  • After compression 32.9 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. This page needs HTML code to be minified as it can gain 15.2 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 111.3 kB or 77% of the original size.

JavaScript Optimization

-22%

Potential reduce by 21.9 kB

  • Original 102.0 kB
  • After minification 102.0 kB
  • After compression 80.0 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 21.9 kB or 22% of the original size.

CSS Optimization

-25%

Potential reduce by 4.3 kB

  • Original 17.7 kB
  • After minification 17.7 kB
  • After compression 13.3 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. Cs.helsinki.fi needs all CSS files to be minified and compressed as it can save up to 4.3 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (79%)

Requests Now

14

After Optimization

3

  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cs Helsinki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cs.helsinki.fi accessibility score

94

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cs.helsinki.fi 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

cs.helsinki.fi SEO score

86

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

Links do not have descriptive text

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cs.helsinki.fi 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 Cs.helsinki.fi 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 data is detected on the main page of Cs Helsinki. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: