tech-fellow .eu

4.23

Results collected 2024-04-05 from https://tech-fellow.eu/

Lighthouse Performance

4.25

The website is fast.
Total Blocking Time: 150 ms 4.70
Largest Contentful Paint: 3.2 s 3.65
Cumulative Layout Shift 5.00
First Contentful Paint: 2.6 s 3.20
Speed Index: 4.5 s 3.60
Defer offscreen images 1.00
Eliminate render-blocking resources 1.00
Largest Contentful Paint element 1.00
Properly size images 1.00
Reduce unused CSS 1.00
Reduce unused JavaScript 1.00
Serve images in next-gen formats 1.00
Max Potential First Input Delay: 250 ms 2.40
Efficiently encode images: Potential savings of 28 KiB 2.50
Serve static assets with an efficient cache policy: 3 resources found 2.50
Time to Interactive: 6.7 s 2.80
First Meaningful Paint: 2.6 s 4.25
All text remains visible during webfont loads 5.00
Avoid chaining critical requests 5.00
Avoid large layout shifts 5.00
Avoid large layout shifts 5.00
Avoid long main-thread tasks 5.00
Avoid multiple page redirects 5.00
Avoid serving legacy JavaScript to modern browsers 5.00
Avoids document.write() 5.00
Avoids an excessive DOM size 5.00
Avoids enormous network payloads 5.00
Diagnostics 5.00
Enable text compression 5.00
Final Screenshot 5.00
Has a <meta name="viewport"> tag with width or initial-scale 5.00
Image elements have explicit width and height 5.00
Initial server response time was short 5.00
JavaScript execution time 5.00
Metrics 5.00
Minify CSS 5.00
Minify JavaScript 5.00
Minimize third-party usage 5.00
Minimizes main-thread work 5.00
Network Requests 5.00
Network Round Trip Times 5.00
Preconnect to required origins 5.00
Remove duplicate modules in JavaScript bundles 5.00
Resources Summary 5.00
Screenshot Thumbnails 5.00
Script Treemap Data 5.00
Server Backend Latencies 5.00
Tasks 5.00
Use HTTP/2 5.00
Use video formats for animated content 5.00
Uses passive listeners to improve scrolling performance 5.00
Enable text compression 5.00

Lighthouse SEO

5.00

The website is really good at SEO!
Document avoids plugins 5.00
Document has a <title> element 5.00
Document has a meta description 5.00
Document has a valid hreflang 5.00
Document has a valid rel=canonical 5.00
Document uses legible font sizes 5.00
Has a <meta name="viewport"> tag with width or initial-scale 5.00
Image elements have [alt] attributes 5.00
Links are crawlable 5.00
Links have descriptive text 5.00
Page has successful HTTP status code 5.00
Page isn’t blocked from indexing 5.00
Tap targets are sized appropriately 5.00
robots.txt is valid 5.00

Lighthouse Best Practices

4.80

The website can still make some improvements on best practice.
Avoids deprecated APIs 5.00
Avoids third-party cookies 5.00
Browser errors were logged to the console 1.00
Uses HTTPS 5.00
Allows users to paste into input fields 5.00
Avoids unload event listeners 5.00
Avoids requesting the geolocation permission on page load 5.00
Avoids requesting the notification permission on page load 5.00
Displays images with correct aspect ratio 5.00
No issues in the Issues panel in Chrome Devtools 5.00
Page has the HTML doctype 5.00
Properly defines charset 5.00
Serves images with appropriate resolution 5.00
Detected JavaScript libraries 5.00
Ensure CSP is effective against XSS attacks 5.00
Page has valid source maps 5.00
Uses HTTPS 5.00
No issues in the Issues panel in Chrome Devtools 5.00
Allows users to paste into input fields 5.00
Avoids deprecated APIs 5.00
Page has the HTML doctype 5.00

W3C HTML

3.60

The tested page has 22 errors in its HTML code.
Number of grouped error type: 3 4.40
Number of errors: 22 2.80
The text content of element X was not in the required format: The literal did not satisfy the time-datetime format. (errors of this type: 20 pcs)
Element X not allowed as child of element X in this context. (Suppressing further errors from this subtree.) (errors of this type: 1 pcs)
Bad value X for attribute X on element X. (errors of this type: 1 pcs)

Standard Files

4.38

robots.txt seems ok. 5.00
Sitemap seems to work. 5.00
RSS subscription found. 5.00
security.txt required expires (added in draft v10) is missing. 2.50

Lighthouse A11y

4.65

The website can be more accessible, but is rather good!
Buttons do not have an accessible name 1.00
Image elements have [alt] attributes 5.00
[aria-*] attributes are valid and not misspelled 5.00
[aria-*] attributes have valid values 5.00
[aria-*] attributes match their roles 5.00
[aria-hidden="true"] is not present on the document <body> 5.00
[user-scalable="no"] is not used in the <meta name="viewport"> element and the [maximum-scale] attribute is not less than 5. 5.00
Background and foreground colors have a sufficient contrast ratio 5.00
Document has a <title> element 5.00
Links are distinguishable without relying on color. 5.00
Links have a discernible name 5.00
List items (<li>) are contained within <ul>, <ol> or <menu> parent elements 5.00
Lists contain only <li> elements and script supporting elements (<script> and <template>). 5.00
<html> element has a [lang] attribute 5.00
<html> element has a valid value for its [lang] attribute 5.00
[id] attributes on active, focusable elements are unique 5.00
Heading elements appear in a sequentially-descending order 5.00
Image elements do not have [alt] attributes that are redundant text. 5.00
Values assigned to role="" are valid ARIA roles. 5.00

Sitespeed.io

5.00

The website is really fast! 5.00
Speedindex: 290 5.00
Loading time: 0.417 sec
Number of requests: 23

Yellow Lab Tools

4.35

The website has good frontend code. 4.35
Page weight 4.60
Requests 4.35
DOM complexity 5.00
JS complexity 5.00
Bad JS 5.00
jQuery 5.00
CSS complexity 1.15
Bad CSS 3.15
Web fonts 1.25
Server config 5.00
Number of iframes 5.00
Total JS execution time 5.00
DOM access 5.00
Scroll events bound 5.00
document.write calls 5.00
Synchronous Ajax requests 5.00
Rules count 1.00
Total weight 5.00
Image optimization 3.55
Oversized images 5.00
Gzip/Brotli compression 4.15
File minification 5.00
Requests number 5.00
Different domains 5.00
404 not found 1.00
Connections closed 5.00
Identical content 5.00
Below the fold images 5.00
Webfonts number 1.00
Overweighted webfonts 1.00
WOFF 2 5.00
HTTP protocols 5.00
TLS protocols 5.00
Caching disabled 5.00
Caching not specified 5.00
Caching too short 5.00
jQuery version 5.00
TLS protocols 5.00
IDs duplicated 5.00
CSS syntax error 5.00
Gzip/Brotli compression 4.15
404 not found 1.00
TLS protocols 5.00

Pa11y

4.75

The website can be more accessible, but is rather good!
Number of error type: 1 4.80
Number of errors: 3 4.70

Problems:

A button element does not have a name available to an accessibility API. Valid names are: title undefined, element content, aria-label undefined, aria-labelledby undefined.

Integrity & Security

2.56

Rather poor on user privacy.
Result generated: 2024-04-05 08:39:13 Etc/UTC (Cached for 24 hours)
HTTPS by default: is good! 5.00
Strict Transport Security: is pretty bad. 1.00
Content Security Policy: is pretty bad. 1.00
Reporting CSP Certificate Transparency Network Error Logging: is good! 5.00
Referrer Policy: is pretty bad. 1.00
Subresource Integrity SRI: is pretty bad. 1.00
HTTP headers: is ok, with 1 error(s) and 0 warning(s). 4.50
Cookies: is ok, with 6 error(s) and 0 warning(s). 2.00

HTTP & Tech

3.67

HTTP to HTTPS redirect 5.00
TLSv1.3 support 5.00
TLSv1.2 support 5.00
No IPv6 support 1.00
IPv4 support 5.00
No HTTPv3 support 1.00
No QUIC support 1.00

Carbon Calculator

3.80

Webpage generates little carbon dioxide!
Carbon dioxide per pageview: 0.66 gram(s)
More green than 76 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
More green than 77 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
Network transfer size: 1 mb 3.80