jstemerdink .blog
3.98
Results collected 2023-09-07 from https://jstemerdink.blog/
Lighthouse Performance
3.50
- About average speed.
- Total Blocking Time: 140 ms 4.75
- Largest Contentful Paint: 6.1 s 1.00
- Cumulative Layout Shift: 0.089 4.60
- First Contentful Paint: 2.7 s 3.00
- Speed Index: 3.0 s 4.70
- Ensure text remains visible during webfont load 1.00
- Page prevented back/forward cache restoration 1.00
- Eliminate render-blocking resources: Potential savings of 1,310 ms 2.00
- Properly size images: Potential savings of 392 KiB 2.15
- Reduce unused CSS: Potential savings of 63 KiB 2.70
- First Meaningful Paint: 3.7 s 2.85
- Serve images in next-gen formats: Potential savings of 129 KiB 3.00
- Minimize main-thread work: 3.4 s 3.05
- Reduce unused JavaScript: Potential savings of 46 KiB 3.35
- Avoid an excessive DOM size: 1,030 elements 3.80
- Minify JavaScript: Potential savings of 19 KiB 3.85
- Serve static assets with an efficient cache policy: 3 resources found 3.85
- Time to Interactive: 4.9 s 3.85
- Max Potential First Input Delay: 140 ms 4.35
- Defer offscreen images: Potential savings of 8 KiB 4.45
- JavaScript execution time: 0.7 s 4.90
- Avoid multiple page redirects 5.00
- Avoid serving legacy JavaScript to modern browsers 5.00
- Avoids
document.write()
5.00 - Avoids enormous network payloads 5.00
- Efficiently encode images 5.00
- Enable text compression 5.00
- Has a
<meta name="viewport">
tag withwidth
orinitial-scale
5.00 - Image elements have explicit
width
andheight
5.00 - Initial server response time was short 5.00
- Minify CSS 5.00
- Minimize third-party usage 5.00
- Preconnect to required origins 5.00
- Remove duplicate modules in JavaScript bundles 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
4.55
- Pretty good at SEO, but still has some potential improvements.
- Links are not crawlable 1.00
- Tap targets are not sized appropriately: 89% appropriately sized tap targets 3.95
- 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 uses legible font sizes 5.00
- Has a
<meta name="viewport">
tag withwidth
orinitial-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
- robots.txt is valid 5.00
Lighthouse Best Practices
5.00
- The website is adhering to good practice according to Google Lighthouse!
- Avoids deprecated APIs 5.00
- 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
- 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
- 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
3.10
- The tested page has 24 errors in its HTML code.
- Number of grouped error type: 7 3.60
- Number of errors: 24 2.60
- Duplicate ID X. (errors of this type: 9 pcs)
- Attribute X not allowed on element X at this point. (errors of this type: 6 pcs)
- The X attribute on the X element is obsolete. Use CSS instead. (errors of this type: 4 pcs)
- CSS: Unknown pseudo-element or pseudo-class X. (errors of this type: 2 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)
- Element X is missing required attribute X. (errors of this type: 1 pcs)
- The X attribute was specified, but the element is not a property of any item. (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
4.65
- The website can be more accessible, but is rather good!
- Background and foreground colors do not have a sufficient contrast ratio. 1.00
- Links do not have a discernible name 1.00
- 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- Cells in a
<table>
element that use the[headers]
attribute refer to table cells within the same table. 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
- 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 - Select elements have associated label elements. 5.00
- Tables use
<caption>
instead of cells with the[colspan]
attribute to indicate a caption. 5.00 <frame>
or<iframe>
elements have a title 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
- Skip links are focusable. 5.00
- Image elements do not have
[alt]
attributes that are redundant text. 5.00 - Tables have different content in the summary attribute and
<caption>
. 5.00 - Values assigned to
role=""
are valid ARIA roles. 5.00
Sitespeed.io
4.86
- The website is fast. 4.86
- Speedindex: 638 4.86
- Loading time: 0.929 sec
- Number of requests: 52
Yellow Lab Tools
4.40
- The website has good frontend code. 4.40
- Page weight 4.75
- Requests 5.00
- DOM complexity 4.90
- JS complexity 4.10
- Bad JS 4.95
- jQuery 5.00
- CSS complexity 1.15
- Bad CSS 3.25
- Web fonts 2.50
- Server config 5.00
- Number of iframes 5.00
- Total JS execution time 4.05
- DOM access 4.85
- Scroll events bound 2.85
- document.write calls 5.00
- Synchronous Ajax requests 5.00
- Rules count 1.00
- Total weight 5.00
- Image optimization 4.75
- Oversized images 5.00
- Gzip/Brotli compression 5.00
- File minification 3.65
- 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 5.00
- 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 4.50
- CSS syntax error 5.00
- Gzip/Brotli compression 5.00
- 404 not found 5.00
- TLS protocols 5.00
Pa11y
2.00
- Number of error type: 10 3.00
- Number of errors: 226 1.00
Problems:
- Duplicate id attribute value "jp-post-flair" found on the web page.
- Img element is the only content of the link, but is missing alt text. The alt text should describe the purpose of the link.
- A element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 3.72:1. Recommendation: change text colour to #6c6e76.
- Heading tag found with no content. Text that is not intended as a heading should not be marked up with heading tags.
- Fieldset does not contain a legend element. All fieldsets should contain a legend element that describes a description of the field group.
- A fieldset element does not have a name available to an accessibility API. Valid names are: legend element, aria-label undefined, aria-labelledby undefined.
- Anchor element found with no link content and no name and/or ID attribute.
- Iframe element requires a non-empty title attribute that identifies the frame.
- A element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 4.16:1. Recommendation: change text colour to #74767e.
- A element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 2.85:1. Recommendation: change text colour to #767676.
- Info: Too many unique problems to show them all.
Integrity & Security
3.31
- Ok integrity but should get better.
- Result generated: 2023-09-06 17:05:11 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 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 good! 5.00
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
4.25
- Webpage generates little carbon dioxide!
- Carbon dioxide per pageview: 0.49 gram(s)
- More green than 85 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
- More green than 86 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
- Network transfer size: 787 kb 4.25
Software
4.45
- CMS used: wordpress
- WebServer used: tomcat
- Technology used: php, js
- License(s) used: mit
- Metadata used: open-graph, viewport, dns-prefetch, icon, apple-touch-icon
- JS Libraries used: jquery, jquery-migrate, audio, jquery-mousewheel
- Languages found: en, en_us
- Image formats used: jpg, jpeg, png, gif, ico
- Update(s) available 4.45