davidhome .net

4.20

Results collected 2024-04-05 from https://www.davidhome.net

Lighthouse Performance

4.00

The website is fast.
Total Blocking Time: 200 ms 4.50
Largest Contentful Paint: 3.4 s 3.30
Cumulative Layout Shift 5.00
First Contentful Paint: 3.0 s 2.40
Speed Index: 4.8 s 3.30
Eliminate render-blocking resources 1.00
Enable text compression 1.00
Largest Contentful Paint element 1.00
Minimize main-thread work 1.00
Preconnect to required origins 1.00
Reduce unused CSS 1.00
Reduce unused JavaScript 1.00
First Meaningful Paint: 5.5 s 1.10
Time to Interactive: 8.1 s 2.05
Ensure text remains visible during webfont load: 2.50
Serve static assets with an efficient cache policy: 7 resources found 2.50
Max Potential First Input Delay: 120 ms 4.65
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
Defer offscreen images 5.00
Diagnostics 5.00
Efficiently encode images 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
Largest Contentful Paint image was not lazily loaded 5.00
Metrics 5.00
Minify CSS 5.00
Minify JavaScript 5.00
Minimize third-party usage 5.00
Network Requests 5.00
Network Round Trip Times 5.00
Preload Largest Contentful Paint image 5.00
Properly size images 5.00
Remove duplicate modules in JavaScript bundles 5.00
Resources Summary 5.00
Screenshot Thumbnails 5.00
Script Treemap Data 5.00
Serve images in next-gen formats 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 1.00

Lighthouse SEO

4.60

Pretty good at SEO, but still has some potential improvements.
Document does not have a meta description 1.00
Document avoids plugins 5.00
Document has a <title> element 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
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

3.90

About average on following good practice
Uses third-party cookies 1.00
Avoids deprecated APIs 5.00
Issues were logged in the Issues panel in Chrome Devtools 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 browser errors logged to the console 5.00
Page has the HTML doctype 5.00
Properly defines charset 5.00
Serves images with appropriate resolution 5.00
Ensure CSP is effective against XSS attacks 5.00
Page has valid source maps 5.00
Uses HTTPS 5.00
Issues were logged in the Issues panel in Chrome Devtools 1.00
Allows users to paste into input fields 5.00
Avoids deprecated APIs 5.00
Page has the HTML doctype 5.00

W3C HTML

4.85

The tested page has 1 errors in its HTML code.
Number of grouped error type: 1 4.80
Number of errors: 1 4.90
Element X must not have attribute X unless attribute X is also specified. (errors of this type: 1 pcs)

Standard Files

4.00

robots.txt seems ok. 5.00
Sitemap seems to work. 5.00
RSS subscription found. 5.00
security.txt is missing. 1.00

Lighthouse A11y

4.80

The website can be more accessible, but is rather good!
Links do not have a discernible name 1.00
Buttons have an accessible name 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
[role]s have all required [aria-*] attributes 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
Elements with role="dialog" or role="alertdialog" have accessible names. 5.00
Links are distinguishable without relying on color. 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
[aria-hidden="true"] elements do not contain focusable descendents 5.00
[id] attributes on active, focusable elements are unique 5.00
[role] values are valid 5.00
Elements with visible text labels do not have matching accessible names. 1.00
Heading elements appear in a sequentially-descending order 5.00
Values assigned to role="" are valid ARIA roles. 5.00
All heading elements contain content. 5.00

Sitespeed.io

4.65

The website is fast. 4.65
Speedindex: 852 4.65
Loading time: 1.22s
Number of requests: 30

Yellow Lab Tools

4.45

The website has good frontend code. 4.45
Page weight 4.55
Requests 5.00
DOM complexity 5.00
JS complexity 4.90
Bad JS 5.00
jQuery 5.00
CSS complexity 2.60
Bad CSS 3.55
Web fonts 1.25
Server config 4.95
Number of iframes 5.00
Total JS execution time 5.00
DOM access 5.00
Scroll events bound 4.30
document.write calls 5.00
Synchronous Ajax requests 5.00
Rules count 1.00
Total weight 5.00
Image optimization 5.00
Oversized images 5.00
Gzip/Brotli compression 4.00
File minification 3.35
Requests number 5.00
Different domains 5.00
404 not found 5.00
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 4.50
TLS protocols 5.00
IDs duplicated 5.00
CSS syntax error 5.00
Gzip/Brotli compression 4.00
404 not found 5.00
TLS protocols 5.00

Pa11y

4.05

The website can be more accessible, but is rather good!
Number of error type: 3 4.40
Number of errors: 13 3.70

Problems:

Iframe element requires a non-empty title attribute that identifies the frame.
Heading tag found with no content. Text that is not intended as a heading should not be marked up with heading tags.
Anchor element found with a valid href attribute, but no link content has been supplied.

Integrity & Security

2.69

Rather poor on user privacy.
Result generated: 2024-04-05 08:46:37 Etc/UTC (Cached for 24 hours)
HTTPS by default: is good! 5.00
HTTP Strict Transport Security HSTS: is pretty bad. 1.00
Content Security Policy: is pretty bad. 1.00
Reporting CSP Certificate Transparency Network Error Logging: is not that good. 2.50
Referrer Policy: is good! 5.00
Subresource Integrity SRI: is pretty bad. 1.00
HTTP headers: is good! 5.00
Cookies: is ok, with 8 error(s) and 0 warning(s). 1.00

HTTP & Tech

4.56

Score is divided by 2 (number of urls tested with redirects)
HTTP to HTTPS redirect 5.00
No TLSv1.3 support 1.00
No TLSv1.2 support 1.00
IPv6 support 5.00
IPv4 support 5.00
HTTPv3 support 5.00
QUIC support 5.00
HTTP to HTTPS redirect 5.00
TLSv1.3 support 5.00
TLSv1.2 support 5.00
IPv6 support 5.00
IPv4 support 5.00
HTTPv3 support 5.00
QUIC support 5.00

Carbon Calculator

3.90

Webpage generates little carbon dioxide!
Carbon dioxide per pageview: 0.63 gram(s)
More green than 78 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
More green than 78 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
Network transfer size: 1014 kb 3.90