stefanolsen .com
4.67
Results from https://stefanolsen.com/
Lighthouse Performance
4.65
Results collected at 2024-11-13
- The website is fast.
Performance section:
- Total Blocking Time 5.00
- Largest Contentful Paint: 2.7 s 4.30
- Cumulative Layout Shift 5.00
- First Contentful Paint: 2.4 s 3.60
- Speed Index: 2.4 s 4.90
- Largest Contentful Paint element 1.00
- Eliminate render-blocking resources 1.00
- Reduce unused JavaScript 1.00
- Serve static assets with an efficient cache policy: 4 resources found 2.50
- Reduce unused CSS: Potential savings of 26 KiB 2.50
- Avoid serving legacy JavaScript to modern browsers: Potential savings of 0 KiB 2.50
- Time to Interactive: 3.1 s 4.75
- Max Potential First Input Delay: 100 ms 4.80
- Has a `<meta name="viewport">` tag with `width` or `initial-scale` 5.00
- Screenshot Thumbnails 5.00
- Final Screenshot 5.00
- Initial server response time was short 5.00
- User Timing marks and measures 5.00
- Avoid chaining critical requests 5.00
- Avoid multiple page redirects 5.00
- Minimizes main-thread work 5.00
- JavaScript execution time 5.00
- Preconnect to required origins 5.00
- All text remains visible during webfont loads 5.00
- Diagnostics 5.00
- Network Requests 5.00
- Network Round Trip Times 5.00
- Server Backend Latencies 5.00
- Tasks 5.00
- Metrics 5.00
- Resources Summary 5.00
- Minimize third-party usage 5.00
- Avoid long main-thread tasks 5.00
- Image elements have explicit `width` and `height` 5.00
- Script Treemap Data 5.00
- Avoids enormous network payloads 5.00
- Defer offscreen images 5.00
- Minify CSS 5.00
- Minify JavaScript 5.00
- Serve images in next-gen formats 5.00
- Efficiently encode images 5.00
- Enable text compression 5.00
- Properly size images 5.00
- Use video formats for animated content 5.00
- Remove duplicate modules in JavaScript bundles 5.00
- Avoids an excessive DOM size 5.00
- Avoids `document.write()` 5.00
- Use HTTP/2 5.00
- Uses passive listeners to improve scrolling performance 5.00
- Page didn't prevent back/forward cache restoration 5.00
Performance section:
- Total Blocking Time 5.00
- Largest Contentful Paint: 2.7 s 4.30
- Cumulative Layout Shift 5.00
- First Contentful Paint: 2.4 s 3.60
- Speed Index: 2.4 s 4.90
- Largest Contentful Paint element 1.00
- Eliminate render-blocking resources 1.00
- Reduce unused JavaScript 1.00
- Serve static assets with an efficient cache policy: 4 resources found 2.50
- Reduce unused CSS: Potential savings of 26 KiB 2.50
- Avoid serving legacy JavaScript to modern browsers: Potential savings of 0 KiB 2.50
- Time to Interactive: 3.1 s 4.75
- Max Potential First Input Delay: 100 ms 4.80
- Has a `<meta name="viewport">` tag with `width` or `initial-scale` 5.00
- Screenshot Thumbnails 5.00
- Final Screenshot 5.00
- Initial server response time was short 5.00
- User Timing marks and measures 5.00
- Avoid chaining critical requests 5.00
- Avoid multiple page redirects 5.00
- Minimizes main-thread work 5.00
- JavaScript execution time 5.00
- Preconnect to required origins 5.00
- All text remains visible during webfont loads 5.00
- Diagnostics 5.00
- Network Requests 5.00
- Network Round Trip Times 5.00
- Server Backend Latencies 5.00
- Tasks 5.00
- Metrics 5.00
- Resources Summary 5.00
- Minimize third-party usage 5.00
- Avoid long main-thread tasks 5.00
- Image elements have explicit `width` and `height` 5.00
- Script Treemap Data 5.00
- Avoids enormous network payloads 5.00
- Defer offscreen images 5.00
- Minify CSS 5.00
- Minify JavaScript 5.00
- Serve images in next-gen formats 5.00
- Efficiently encode images 5.00
- Enable text compression 5.00
- Properly size images 5.00
- Use video formats for animated content 5.00
- Remove duplicate modules in JavaScript bundles 5.00
- Avoids an excessive DOM size 5.00
- Avoids `document.write()` 5.00
- Use HTTP/2 5.00
- Uses passive listeners to improve scrolling performance 5.00
- Page didn't prevent back/forward cache restoration 5.00
404 Page
4.20
Results collected at 2024-11-13
- Correct status code? Got 404, and 404 is correct. 5.00
- Found a page title in the page's metadata? 5.00
- Found headline (h1)? 5.00
- Is it lacking text describing that an error has occurred (in Swedish OR English for English sites)? 5.00
- Is text content length is less than 150 characters, which indicates that the user is not being referred, nor advised? 1.00
- Found a page title in the page's metadata? 5.00
- Found headline (h1)? 5.00
- Is it lacking text describing that an error has occurred (in Swedish OR English for English sites)? 5.00
- Is text content length is less than 150 characters, which indicates that the user is not being referred, nor advised? 1.00
Lighthouse SEO
5.00
Results collected at 2024-11-13
- The webpage is really optimised for SEO!
- Page isn’t blocked from indexing 5.00
- Document has a `<title>` element 5.00
- Document has a meta description 5.00
- Page has successful HTTP status code 5.00
- Links have descriptive text 5.00
- Links are crawlable 5.00
- robots.txt is valid 5.00
- Document has a valid `hreflang` 5.00
- Document has a valid `rel=canonical` 5.00
- Page isn’t blocked from indexing 5.00
- Document has a `<title>` element 5.00
- Document has a meta description 5.00
- Page has successful HTTP status code 5.00
- Links have descriptive text 5.00
- Links are crawlable 5.00
- robots.txt is valid 5.00
- Document has a valid `hreflang` 5.00
- Document has a valid `rel=canonical` 5.00
Lighthouse Best Practices
3.75
Results collected at 2024-11-13
- About average on following best practice
- Uses third-party cookies 1.00
- Uses HTTPS 5.00
- Browser errors were logged to the console 1.00
- Avoids deprecated APIs 5.00
- Issues were logged in the `Issues` panel in Chrome Devtools 1.00
- Allows users to paste into input fields 5.00
- Has a `<meta name="viewport">` tag with `width` or `initial-scale` 5.00
- Displays images with correct aspect ratio 5.00
- Serves images with appropriate resolution 5.00
- Page has the HTML doctype 5.00
- Properly defines charset 5.00
- Avoids requesting the geolocation permission on page load 5.00
- Avoids requesting the notification permission on page load 5.00
- Document uses legible font sizes 5.00
- Page has valid source maps 5.00
- Ensure CSP is effective against XSS attacks 5.00
- Uses third-party cookies 1.00
- Uses HTTPS 5.00
- Browser errors were logged to the console 1.00
- Avoids deprecated APIs 5.00
- Issues were logged in the `Issues` panel in Chrome Devtools 1.00
- Allows users to paste into input fields 5.00
- Has a `<meta name="viewport">` tag with `width` or `initial-scale` 5.00
- Displays images with correct aspect ratio 5.00
- Serves images with appropriate resolution 5.00
- Page has the HTML doctype 5.00
- Properly defines charset 5.00
- Avoids requesting the geolocation permission on page load 5.00
- Avoids requesting the notification permission on page load 5.00
- Document uses legible font sizes 5.00
- Page has valid source maps 5.00
- Ensure CSP is effective against XSS attacks 5.00
W3C HTML
4.95
Results collected at 2024-11-13
- The tested page has 3 errors in its HTML code.
Standards section:
- #1: Webpage - Number of grouped error type: 0 5.00
- #1: Webpage - Number of errors: 0 5.00
- #7: a20147775041.ht- Number of grouped error type: 0 5.00
- #7: a20147775041.ht- Number of errors: 0 5.00
- #9: favicon.ico- Number of grouped error type: 1 4.80
- #9: favicon.ico- Number of errors: 1 4.90
- A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”. (errors of this type: 1 pcs)
Standards section:
- #1: Webpage - Number of grouped error type: 0 5.00
- #1: Webpage - Number of errors: 0 5.00
- #7: a20147775041.ht- Number of grouped error type: 0 5.00
- #7: a20147775041.ht- Number of errors: 0 5.00
- #9: favicon.ico- Number of grouped error type: 1 4.80
- #9: favicon.ico- Number of errors: 1 4.90
- A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”. (errors of this type: 1 pcs)
W3C CSS
5.00
Results collected at 2024-11-13
- The CSS is very good.
Standards section:
- `style=""` in: #1: Webpage , number of grouped error type: 0 5.00
- `style=""` in: #1: Webpage , number of errors: 0 5.00
- `<link rel="stylesheet">` in: #1: Webpage , number of grouped error type: 0 5.00
- `<link rel="stylesheet">` in: #1: Webpage , number of errors: 0 5.00
- `<link rel="stylesheet">` in: #9: favicon.ico, number of grouped error type: 0 5.00
- `<link rel="stylesheet">` in: #9: favicon.ico, number of errors: 0 5.00
- `<style>`, number of grouped error type: 0 5.00
- `<style>`, number of errors: 0 5.00
- `content-type=".*css.*"`, number of grouped error type: 0 5.00
- `content-type=".*css.*"`, number of errors: 0 5.00
Standards section:
- `style=""` in: #1: Webpage , number of grouped error type: 0 5.00
- `style=""` in: #1: Webpage , number of errors: 0 5.00
- `<link rel="stylesheet">` in: #1: Webpage , number of grouped error type: 0 5.00
- `<link rel="stylesheet">` in: #1: Webpage , number of errors: 0 5.00
- `<link rel="stylesheet">` in: #9: favicon.ico, number of grouped error type: 0 5.00
- `<link rel="stylesheet">` in: #9: favicon.ico, number of errors: 0 5.00
- `<style>`, number of grouped error type: 0 5.00
- `<style>`, number of errors: 0 5.00
- `content-type=".*css.*"`, number of grouped error type: 0 5.00
- `content-type=".*css.*"`, number of errors: 0 5.00
Standard Files
5.00
Results collected at 2024-11-13
- RSS subscription found in webpage metadata. 5.00
Standards section:
- robots.txt seems ok. 5.00
- Sitemap, Url in <loc> is starting with https:// 5.00
- Sitemap, Url in <loc> is using same domain as robots.txt 5.00
- Sitemap, No duplicate Urls in <loc> 5.00
- Sitemap, is only listing webpages 5.00
- Sitemap(s) are only specified once 5.00
- Sitemap, is under 50 000 items 5.00
- The Sitemap is neither good or bad. 5.00
- security.txt seems to work. 5.00
Standards section:
- robots.txt seems ok. 5.00
- Sitemap, Url in <loc> is starting with https:// 5.00
- Sitemap, Url in <loc> is using same domain as robots.txt 5.00
- Sitemap, No duplicate Urls in <loc> 5.00
- Sitemap, is only listing webpages 5.00
- Sitemap(s) are only specified once 5.00
- Sitemap, is under 50 000 items 5.00
- The Sitemap is neither good or bad. 5.00
- security.txt seems to work. 5.00
Lighthouse A11y
5.00
Results collected at 2024-11-13
- The website do not have any apparent issues with accessibility!
Accessibility section:
- `[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
- `[aria-*]` attributes have valid values 5.00
- `[aria-*]` attributes are valid and not misspelled 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
- ARIA attributes are used as specified for the element's role 5.00
- Elements use only permitted ARIA attributes 5.00
- `[role]` values are valid 5.00
- Background and foreground colors have a sufficient contrast ratio 5.00
- Document has a `<title>` element 5.00
- `<html>` element has a `[lang]` attribute 5.00
- `<html>` element has a valid value for its `[lang]` attribute 5.00
- Links have a discernible name 5.00
- Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). 5.00
- List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements 5.00
- Touch targets have sufficient size and spacing. 5.00
- Heading elements appear in a sequentially-descending order 5.00
- Uses ARIA roles only on compatible elements 5.00
- Deprecated ARIA roles were not used 5.00
- Document has a main landmark. 5.00
Accessibility section:
- `[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
- `[aria-*]` attributes have valid values 5.00
- `[aria-*]` attributes are valid and not misspelled 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
- ARIA attributes are used as specified for the element's role 5.00
- Elements use only permitted ARIA attributes 5.00
- `[role]` values are valid 5.00
- Background and foreground colors have a sufficient contrast ratio 5.00
- Document has a `<title>` element 5.00
- `<html>` element has a `[lang]` attribute 5.00
- `<html>` element has a valid value for its `[lang]` attribute 5.00
- Links have a discernible name 5.00
- Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). 5.00
- List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements 5.00
- Touch targets have sufficient size and spacing. 5.00
- Heading elements appear in a sequentially-descending order 5.00
- Uses ARIA roles only on compatible elements 5.00
- Deprecated ARIA roles were not used 5.00
- Document has a main landmark. 5.00
Sitespeed.io
4.99
Results collected at 2024-11-13
Performance section:
- [desktop] TTFB (Time to First Byte): 124.00ms, ±7.00ms 5.00
- [desktop] DOMContentLoaded: 347.00ms, ±57.00ms 5.00
- [desktop] FCP (First Contentful Paint): 360.67ms, ±47.33ms 5.00
- [desktop] LCP (Largest Contentful Paint): 360.67ms, ±47.33ms 5.00
- [desktop] Load: 623.00ms, ±78.00ms 4.75
- [desktop] FirstVisualChange: 367.00ms, ±34.00ms 5.00
- [desktop] SpeedIndex: 367.00ms, ±34.00ms 5.00
- [desktop] VisualComplete85: 367.00ms, ±34.00ms 5.00
- [desktop] CLS (Cumulative Layout Shift): 0.00ms, ±0.00ms 5.00
- [desktop] TBT (Total Blocking Time): 0.00ms, ±0.00ms 5.00
- [desktop] firstPaint: 360.67ms, ±47.33ms
- [desktop] LastVisualChange: 367.00ms, ±34.00ms
- [mobile] TTFB (Time to First Byte): 119.00ms, ±2.00ms 5.00
- [mobile] DOMContentLoaded: 317.67ms, ±13.33ms 5.00
- [mobile] FCP (First Contentful Paint): 317.67ms, ±9.33ms 5.00
- [mobile] LCP (Largest Contentful Paint): 317.67ms, ±9.33ms 5.00
- [mobile] Load: 591.67ms, ±27.33ms 5.00
- [mobile] FirstVisualChange: 317.50ms, ±16.50ms 5.00
- [mobile] SpeedIndex: 317.50ms, ±16.50ms 5.00
- [mobile] VisualComplete85: 317.50ms, ±16.50ms 5.00
- [mobile] CLS (Cumulative Layout Shift): 0.00ms, ±0.00ms 5.00
- [mobile] TBT (Total Blocking Time): 0.00ms, ±0.00ms 5.00
- [mobile] firstPaint: 317.67ms, ±9.33ms
- [mobile] LastVisualChange: 317.50ms, ±16.50ms
- [desktop] TTFB (Time to First Byte): 124.00ms, ±7.00ms 5.00
- [desktop] DOMContentLoaded: 347.00ms, ±57.00ms 5.00
- [desktop] FCP (First Contentful Paint): 360.67ms, ±47.33ms 5.00
- [desktop] LCP (Largest Contentful Paint): 360.67ms, ±47.33ms 5.00
- [desktop] Load: 623.00ms, ±78.00ms 4.75
- [desktop] FirstVisualChange: 367.00ms, ±34.00ms 5.00
- [desktop] SpeedIndex: 367.00ms, ±34.00ms 5.00
- [desktop] VisualComplete85: 367.00ms, ±34.00ms 5.00
- [desktop] CLS (Cumulative Layout Shift): 0.00ms, ±0.00ms 5.00
- [desktop] TBT (Total Blocking Time): 0.00ms, ±0.00ms 5.00
- [desktop] firstPaint: 360.67ms, ±47.33ms
- [desktop] LastVisualChange: 367.00ms, ±34.00ms
- [mobile] TTFB (Time to First Byte): 119.00ms, ±2.00ms 5.00
- [mobile] DOMContentLoaded: 317.67ms, ±13.33ms 5.00
- [mobile] FCP (First Contentful Paint): 317.67ms, ±9.33ms 5.00
- [mobile] LCP (Largest Contentful Paint): 317.67ms, ±9.33ms 5.00
- [mobile] Load: 591.67ms, ±27.33ms 5.00
- [mobile] FirstVisualChange: 317.50ms, ±16.50ms 5.00
- [mobile] SpeedIndex: 317.50ms, ±16.50ms 5.00
- [mobile] VisualComplete85: 317.50ms, ±16.50ms 5.00
- [mobile] CLS (Cumulative Layout Shift): 0.00ms, ±0.00ms 5.00
- [mobile] TBT (Total Blocking Time): 0.00ms, ±0.00ms 5.00
- [mobile] firstPaint: 317.67ms, ±9.33ms
- [mobile] LastVisualChange: 317.50ms, ±16.50ms
Yellow Lab Tools
4.80
Results collected at 2024-11-13
- The website has rather good frontend code. 4.80
- Network 4.50
- Images 5.00
- DOM complexity 5.00
- JS complexity 5.00
- Bad JS 5.00
- jQuery 5.00
- CSS complexity 4.00
- Bad CSS 4.40
- Web fonts 5.00
- Server config 4.80
Performance section:
- 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 5.00
- Total weight 5.00
- Gzip/Brotli compression 5.00
- File minification 4.50
- 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 5.00
- Overweighted webfonts 5.00
- WOFF 2 5.00
- HTTP protocols 5.00
- TLS protocols 4.00
- Caching disabled 5.00
- Caching not specified 5.00
- Caching too short 5.00
- Network 4.50
- Images 5.00
- DOM complexity 5.00
- JS complexity 5.00
- Bad JS 5.00
- jQuery 5.00
- CSS complexity 4.00
- Bad CSS 4.40
- Web fonts 5.00
- Server config 4.80
Performance section:
- 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 5.00
- Total weight 5.00
- Gzip/Brotli compression 5.00
- File minification 4.50
- 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 5.00
- Overweighted webfonts 5.00
- WOFF 2 5.00
- HTTP protocols 5.00
- TLS protocols 4.00
- Caching disabled 5.00
- Caching not specified 5.00
- Caching too short 5.00
Pa11y
5.00
Results collected at 2024-11-13
- The website do not have any apparent issues with accessibility!
Accessibility section:
- Number of types of issues: 0 5.00
- Number of issues: 0 5.00
Accessibility section:
- Number of types of issues: 0 5.00
- Number of issues: 0 5.00
Integrity & Security
3.06
Results collected at 2024-11-13
- About average privacy settings, but should get better.
Security section:
- 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 not that good. 2.50
- Subresource Integrity SRI is pretty bad. 1.00
- HTTP headers is good! 5.00
- Cookies is ok, with 12 error(s) and 0 warning(s). 1.00
Security section:
- 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 not that good. 2.50
- Subresource Integrity SRI is pretty bad. 1.00
- HTTP headers is good! 5.00
- Cookies is ok, with 12 error(s) and 0 warning(s). 1.00
Energy Efficiency
5.00
Results collected at 2024-11-13
- Webpage generates very little carbon dioxide!
- Carbon dioxide per pageview: 0.15 gram(s)
- More green than 97 % of the websites tested by webperf.se (Reference updated: 2024-03-31).
- More green than 98 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
- Network transfer size: 239 kb 5.00
- Carbon dioxide per pageview: 0.15 gram(s)
- More green than 97 % of the websites tested by webperf.se (Reference updated: 2024-03-31).
- More green than 98 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
- Network transfer size: 239 kb 5.00
Software
5.00
Results collected at 2024-11-13
- CMS used: episerver
- Technology used: asp.net, csharp
- License(s) used: apache-2.0
- Metadata used: canonical, open-graph, viewport
- Languages found: en
- Image formats used: ico, svg
Security section:
##### NO Common Vulnerabilities and Exposures found 5.00
##### You seem to be up to date for all software we can identify 5.00
##### Opensource software used seem to be maintained 5.00
##### You don't seem to be using 'END OF LIFE' software 5.00
- Technology used: asp.net, csharp
- License(s) used: apache-2.0
- Metadata used: canonical, open-graph, viewport
- Languages found: en
- Image formats used: ico, svg
Security section:
##### NO Common Vulnerabilities and Exposures found 5.00
##### You seem to be up to date for all software we can identify 5.00
##### Opensource software used seem to be maintained 5.00
##### You don't seem to be using 'END OF LIFE' software 5.00