Tools & Wizards About Us
404.si screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

404.si

Domov — Mladinski tehnološko - razvojni center 404

Page Load Speed

1.2 sec in total

First Response

15 ms

Resources Loaded

867 ms

Page Rendered

320 ms

404.si screenshot

About Website

Click here to check amazing 404 content. Otherwise, check out these important facts you probably never knew about 404.si

Vzgajajmo ustvarjalce in ustvarjalke! Tehnični projekti in delavnice za otroke in mlade ter razvojno - raziskovalni projekti. Pridite na 404!

Visit 404.si

Key Findings

We analyzed 404.si page load time and found that the first response time was 15 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

404.si performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value2.9 s

95/100

10%

TBT (Total Blocking Time)

Value730 ms

40/100

30%

CLS (Cumulative Layout Shift)

Value0.014

100/100

15%

TTI (Time to Interactive)

Value6.0 s

64/100

10%

Network Requests Diagram

404.si

15 ms

404.si

481 ms

404si.webflow.392888f60.min.css

80 ms

webfont.js

29 ms

plausible.js

221 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 11% of them (2 requests) were addressed to the original 404.si, 42% (8 requests) were made to Fonts.gstatic.com and 26% (5 requests) were made to Assets-global.website-files.com. The less responsive or slowest element that took the longest time to load (481 ms) belongs to the original domain 404.si.

Page Optimization Overview & Recommendations

Page size can be reduced by 121.9 kB (7%)

Content Size

1.7 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 404.si main page is 1.7 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. 65% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 3.1 kB

  • Original 4.9 kB
  • After minification 4.8 kB
  • After compression 1.8 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 3.1 kB or 64% of the original size.

Image Optimization

-9%

Potential reduce by 118.3 kB

  • Original 1.4 MB
  • After minification 1.3 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. 404 images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 453 B

  • Original 326.5 kB
  • After minification 326.5 kB
  • After compression 326.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 31.9 kB
  • After minification 31.9 kB
  • After compression 31.9 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. 404.si has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 404. According to our analytics all requests are already optimized.

Network Requests Diagram

404.si

404.si

15 ms

404.si

404.si

481 ms

404si.webflow.392888f60.min.css

404si.webflow.392888f60.min.css

80 ms

webfont.js

webfont.js

29 ms

plausible.js

plausible.js

221 ms

jquery-3.5.1.min.dc5e7f18c8.js

jquery-3.5.1.min.dc5e7f18c8.js

28 ms

webflow.be5605634.js

webflow.be5605634.js

187 ms

css

css

41 ms

642400bd98e25f779f36138b_IMG_5218.jpg

642400bd98e25f779f36138b_IMG_5218.jpg

154 ms

642400bd0eddfed96ad313fa_Zavod404-sobota-18.jpg

642400bd0eddfed96ad313fa_Zavod404-sobota-18.jpg

111 ms

642b28b40c9e9538669728da_404_logo_outline.svg

642b28b40c9e9538669728da_404_logo_outline.svg

49 ms

KFOmCnqEu92Fr1Mu7GxP.ttf

KFOmCnqEu92Fr1Mu7GxP.ttf

21 ms

KFOlCnqEu92Fr1MmSU5fChc9.ttf

KFOlCnqEu92Fr1MmSU5fChc9.ttf

26 ms

KFOlCnqEu92Fr1MmYUtfChc9.ttf

KFOlCnqEu92Fr1MmYUtfChc9.ttf

31 ms

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438weI_wBeZA.ttf

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438weI_wBeZA.ttf

68 ms

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438wSo_wBeZA.ttf

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438wSo_wBeZA.ttf

187 ms

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438wpojwBeZA.ttf

cY9qfjOCX1hbuyalUrK49dLac06G1ZGsZBtoBCzBDXXD9JVF438wpojwBeZA.ttf

185 ms

c4mP1n92AsfhuCq6tVsaoIx1LQICk0boNoq0SjlDfnzKo-bF3mdQkZYw-L7q.ttf

c4mP1n92AsfhuCq6tVsaoIx1LQICk0boNoq0SjlDfnzKo-bF3mdQkZYw-L7q.ttf

59 ms

c4mP1n92AsfhuCq6tVsaoIx1LQICk0boNoq0SjlDfnzKo-bF3mdQdpEw-L7q.ttf

c4mP1n92AsfhuCq6tVsaoIx1LQICk0boNoq0SjlDfnzKo-bF3mdQdpEw-L7q.ttf

35 ms

Accessibility Review

404.si accessibility score

100

Accessibility Issues

Best Practices

404.si 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

404.si SEO score

100

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

    SL

  • Language Claimed

    SL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 404.si can be misinterpreted by Google and other search engines. Our service has detected that Slovenian is used on the page, and it matches the claimed language. Our system also found out that 404.si 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

404.si

Open Graph data is detected on the main page of 404. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: