optimizely .com
2.74
Results collected 2023-09-07 from https://www.optimizely.com/
Lighthouse Performance
1.45
- The website is quite slow.
- Total Blocking Time 1.00
- Largest Contentful Paint: 6.8 s 1.00
- Cumulative Layout Shift 5.00
- Speed Index 1.00
- First Contentful Paint: 4.0 s 1.15
- Avoid an excessive DOM size: 3,057 elements 1.00
- Image elements do not have explicit
width
andheight
1.00 - Max Potential First Input Delay 1.00
- Minimize main-thread work 1.00
- Page prevented back/forward cache restoration 1.00
- Reduce JavaScript execution time: 14.3 s 1.00
- Reduce initial server response time 1.00
- Reduce the impact of third-party code 1.00
- Serve static assets with an efficient cache policy: 30 resources found 1.00
- Time to Interactive 1.00
- Eliminate render-blocking resources: Potential savings of 950 ms 2.45
- First Meaningful Paint: 4.0 s 2.50
- Reduce unused JavaScript: Potential savings of 743 KiB 2.65
- Preconnect to required origins: Potential savings of 330 ms 3.80
- Reduce unused CSS: Potential savings of 11 KiB 4.10
- Avoids enormous network payloads: Total size was 2,237 KiB 4.85
- All text remains visible during webfont loads 5.00
- Avoid multiple page redirects 5.00
- Avoid serving legacy JavaScript to modern browsers 5.00
- Avoids
document.write()
5.00 - Defer offscreen images 5.00
- Efficiently encode images 5.00
- Enable text compression 5.00
- Has a
<meta name="viewport">
tag withwidth
orinitial-scale
5.00 - Minify CSS 5.00
- Minify JavaScript 5.00
- Preload Largest Contentful Paint image 5.00
- Properly size images 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 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 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
- Tap targets are sized appropriately 5.00
- robots.txt is valid 5.00
Lighthouse Best Practices
3.40
- About average on following good practice
- Uses deprecated APIs 1.00
- Browser errors were logged to the console 1.00
- Registers an
unload
listener 1.00 - Uses HTTPS 5.00
- Allows users to paste into input fields 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
- 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
- Uses deprecated APIs 1.00
- Page has the HTML doctype 5.00
W3C HTML
1.50
- The tested page has 260 errors in its HTML code. It is not that good.
- Number of grouped error type: 15 2.00
- Number of errors: 260 1.00
- Bad value X for attribute X on element X: An ID must not contain whitespace. (errors of this type: 172 pcs)
- Attribute X not allowed on element X at this point. (errors of this type: 35 pcs)
- Bad value X for attribute X on element X: Expected a digit but saw X instead. (errors of this type: 18 pcs)
- Element X not allowed as child of element X in this context. (Suppressing further errors from this subtree.) (errors of this type: 11 pcs)
- An X element with a X attribute whose value is X must not have an X attribute whose value is X or X. (errors of this type: 5 pcs)
- CSS: X: X is not a X value. (errors of this type: 4 pcs)
- The element X must not appear as a descendant of the X element. (errors of this type: 3 pcs)
- Element X is missing required attribute X. (errors of this type: 3 pcs)
- Bad value X for attribute X on element X: Not a valid XML 1.0 name. (errors of this type: 2 pcs)
- The value of the X attribute of the X element must be the ID of a non-hidden form control. (errors of this type: 2 pcs)
- Bad value X for attribute X on element X. (errors of this type: 1 pcs)
- A X element with a X attribute must not have a X attribute with the value X. (errors of this type: 1 pcs)
- CSS: X: Missing a semicolon before the property name X. (errors of this type: 1 pcs)
- CSS: X: Parse Error. (errors of this type: 1 pcs)
- Element X is missing one or more of the following attributes: X, X, X, X, X. (errors of this type: 1 pcs)
Standard Files
2.88
- 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 is missing. 1.00
Lighthouse A11y
4.70
- The website can be more accessible, but is rather good!
- Elements with visible text labels do not have matching accessible names. 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[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
- Heading elements are not in a sequentially-descending order 1.00
- 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 - No element has a
[tabindex]
value greater than 0 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- 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
1.00
- The website is very slow! 1.00
- Speedindex: 9530 1.00
- Loading time: 14.08s
- Number of requests: 196
Integrity & Security
2.44
- Rather poor on user privacy.
- Result generated: 2023-09-06 16:55:58 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 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 85 error(s) and 0 warning(s). 1.00
HTTP & Tech
3.89
- Score is divided by 2 (number of urls tested with redirects)
- 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
- HTTP to HTTPS redirect 5.00
- TLSv1.3 support 5.00
- TLSv1.2 support 5.00
- IPv6 support 5.00
- IPv4 support 5.00
- No HTTPv3 support 1.00
- No QUIC support 1.00
Carbon Calculator
2.25
- The webpage generates some more carbon dioxide than is preferable :/
- Carbon dioxide per pageview: 1.38 gram(s)
- More green than 45 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
- More green than 46 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
- Network transfer size: 2 mb 2.25
Software
2.02
- CMS used: episerver, umbraco
- WebServer used: nginx
- Technology used: asp.net, csharp, php, js, c
- License(s) used: mit
- Metadata used: viewport
- JS Libraries used: domready, core-js, js-cookie, react, uuid, transformation-matrix, jquery, jquery-ui
- Languages found: en, de, sv, no
- Image formats used: svg, png, webp, gif, ico
- Update(s) available 2.02