davidboland .site

4.42

Results collected 2023-09-07 from https://davidboland.site/

Lighthouse Performance

3.70

About average speed.
Total Blocking Time: 630 ms 2.40
Largest Contentful Paint: 3.6 s 3.10
Cumulative Layout Shift 5.00
First Contentful Paint: 1.8 s 4.45
Speed Index 5.00
Max Potential First Input Delay: 410 ms 1.00
Page prevented back/forward cache restoration 1.00
Reduce unused JavaScript: Potential savings of 364 KiB 1.85
Properly size images: Potential savings of 150 KiB 3.00
Minimize main-thread work: 2.8 s 3.70
Reduce unused CSS: Potential savings of 24 KiB 4.25
Time to Interactive: 4.0 s 4.35
Avoid serving legacy JavaScript to modern browsers: Potential savings of 34 KiB 4.50
JavaScript execution time: 1.1 s 4.60
Avoids an excessive DOM size: 717 elements 4.70
First Meaningful Paint: 1.8 s 4.85
All text remains visible during webfont loads 5.00
Avoid multiple page redirects 5.00
Avoids document.write() 5.00
Avoids enormous network payloads 5.00
Defer offscreen images 5.00
Efficiently encode images 5.00
Eliminate render-blocking resources 5.00
Enable text compression 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
Largest Contentful Paint image was not lazily loaded 5.00
Minify CSS 5.00
Minify JavaScript 5.00
Minimize third-party usage 5.00
Preconnect to required origins 5.00
Preload Largest Contentful Paint image 5.00
Remove duplicate modules in JavaScript bundles 5.00
Serve images in next-gen formats 5.00
Use HTTP/2 5.00
Use video formats for animated content 5.00
Uses efficient cache policy on static assets 5.00
Uses passive listeners to improve scrolling performance 5.00
Enable text compression 5.00

Lighthouse SEO

4.65

Pretty good at SEO, but still has some potential improvements.
Links are not crawlable 1.00
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 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

4.75

The website can still make some improvements on best practice.
Avoids deprecated APIs 5.00
Displays images with incorrect aspect ratio 1.00
Uses HTTPS 5.00
Missing source maps for large first-party JavaScript 1.00
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
No browser errors logged to the console 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
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

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 not allowed as child of element X in this context. (Suppressing further errors from this subtree.) (errors of this type: 1 pcs)

Standard Files

3.25

robots.txt seems ok. 5.00
Sitemap is not specified in robots.txt 1.00
RSS subscription is missing in the HTMLs metadata. 4.50
security.txt required contact is missing. 2.50

Lighthouse A11y

5.00

The website do not have any apparent issues with accessibility!
ARIA IDs are unique 5.00
Buttons have an accessible name 5.00
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
[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
Form elements have associated labels 5.00
Links are distinguishable without relying on color. 5.00
Links have a discernible name 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
[role] values are valid 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: 495 5.00
Loading time: 0.669 sec
Number of requests: 65

Yellow Lab Tools

4.55

The website has good frontend code. 4.55
Page weight 4.80
Requests 2.95
DOM complexity 4.75
JS complexity 4.95
Bad JS 5.00
jQuery 5.00
CSS complexity 3.30
Bad CSS 4.20
Web fonts 4.95
Server config 5.00
Number of iframes 5.00
Total JS execution time 5.00
DOM access 4.90
Scroll events bound 5.00
document.write calls 5.00
Synchronous Ajax requests 5.00
Rules count 4.45
Total weight 5.00
Image optimization 5.00
Oversized images 5.00
Gzip/Brotli compression 5.00
File minification 3.70
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 1.00
Webfonts number 5.00
Overweighted webfonts 5.00
WOFF 2 4.70
HTTP protocols 5.00
TLS protocols 5.00
Caching disabled 5.00
Caching not specified 5.00
Caching too short 5.00
TLS protocols 5.00
IDs duplicated 5.00
CSS syntax error 5.00
Gzip/Brotli compression 5.00
404 not found 5.00
TLS protocols 5.00

Pa11y

4.70

The website can be more accessible, but is rather good!
Number of error type: 2 4.60
Number of errors: 2 4.80

Problems:

A emailinput element does not have a name available to an accessibility API. Valid names are: label element, title undefined, aria-label undefined, aria-labelledby undefined.
Anchor element found with no link content and no name and/or ID attribute.

Integrity & Security

3.50

Ok integrity but should get better.
Result generated: 2023-09-06 16:58:02 Etc/UTC (Cached for 24 hours)
HTTPS by default: is good! 5.00
HTTP Strict Transport Security HSTS: is ok, with 2 error(s) and 0 warning(s). 4.00
Content Security Policy: is pretty bad. 1.00
Reporting CSP Certificate Transparency Network Error Logging: is not that good. 2.50
Referrer Policy: is pretty bad. 1.00
Subresource Integrity SRI: is good! 5.00
HTTP headers: is ok, with 1 error(s) and 0 warning(s). 4.50
Cookies: is good! 5.00

HTTP & Tech

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

3.55

Webpage generates little carbon dioxide!
Carbon dioxide per pageview: 0.76 gram(s)
More green than 71 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
More green than 71 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
Network transfer size: 1 mb 3.55

Software

5.00

Technology used: js
License(s) used: mit
Metadata used: viewport, icon, canonical, preload
JS Libraries used: react-markdown
Languages found: en-us
Image formats used: jpg, webp, png, ico