world .optimizely .com

2.71

Results collected 2024-04-05 from https://world.optimizely.com/

Lighthouse Performance

1.35

The website is quite slow.
Total Blocking Time: 1,850 ms 1.00
Largest Contentful Paint 1.00
Cumulative Layout Shift: 0.105 4.40
First Contentful Paint: 6.0 s 1.00
Speed Index: 9.0 s 1.00
Avoid an excessive DOM size 1.00
Avoid large layout shifts 1.00
Avoid large layout shifts 1.00
Defer offscreen images 1.00
Eliminate render-blocking resources 1.00
First Meaningful Paint: 7.3 s 1.00
Largest Contentful Paint element 1.00
Max Potential First Input Delay 1.00
Minify CSS 1.00
Minify JavaScript 1.00
Minimize main-thread work 1.00
Preconnect to required origins 1.00
Reduce JavaScript execution time 1.00
Reduce the impact of third-party code 1.00
Reduce unused CSS 1.00
Reduce unused JavaScript 1.00
Time to Interactive: 15.6 s 1.00
Avoid serving legacy JavaScript to modern browsers: Potential savings of 18 KiB 2.50
Ensure text remains visible during webfont load: 2.50
Image elements do not have explicit width and height: 2.50
Properly size images: Potential savings of 127 KiB 2.50
Serve images in next-gen formats: Potential savings of 378 KiB 2.50
Serve static assets with an efficient cache policy: 53 resources found 2.50
Avoid chaining critical requests 5.00
Avoid long main-thread tasks 5.00
Avoid multiple page redirects 5.00
Avoids document.write() 5.00
Avoids enormous network payloads 5.00
Diagnostics 5.00
Efficiently encode images 5.00
Enable text compression 5.00
Final Screenshot 5.00
Has a <meta name="viewport"> tag with width or initial-scale 5.00
Initial server response time was short 5.00
Metrics 5.00
Network Requests 5.00
Network Round Trip Times 5.00
Remove duplicate modules in JavaScript bundles 5.00
Resources Summary 5.00
Screenshot Thumbnails 5.00
Script Treemap Data 5.00
Server Backend Latencies 5.00
Tasks 5.00
Use HTTP/2 5.00
Use video formats for animated content 5.00
User Timing marks and measures 5.00
Uses passive listeners to improve scrolling performance 5.00
Enable text compression 5.00

Lighthouse SEO

3.70

About average on search engine optimisation (SEO) according to Google.
Document does not have a meta description 1.00
Links are not crawlable 1.00
Links do not have descriptive text 1.00
Tap targets are not sized appropriately: 72% appropriately sized tap targets 3.20
Document avoids plugins 5.00
Document has a <title> element 5.00
Document has a valid hreflang 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
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

2.95

The website is pretty bad on what is considered good practice, according to Google Lighthouse.
Uses deprecated APIs 1.00
Uses third-party cookies 1.00
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
Detected JavaScript libraries 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
Uses deprecated APIs 1.00
Page has the HTML doctype 5.00

W3C HTML

2.20

The tested page has 85 errors in its HTML code. It is not that good.
Number of grouped error type: 8 3.40
Number of errors: 85 1.00
Bad value “” for attribute X on element X: Browsing context name must be at least one character long. (errors of this type: 36 pcs)
Attribute X not allowed on element X at this point. (errors of this type: 12 pcs)
Element X is missing required attribute X. (errors of this type: 9 pcs)
When the X attribute has any image candidate string with a width descriptor, the X attribute must also be specified. (errors of this type: 9 pcs)
The element X must not appear as a descendant of the X element. (errors of this type: 9 pcs)
The X attribute on the X element is obsolete. Use CSS instead. (errors of this type: 5 pcs)
Duplicate ID X. (errors of this type: 4 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)

Standard Files

3.88

robots.txt seems ok. 5.00
Sitemap seems to work. 5.00
RSS subscription is missing in the HTMLs metadata. 4.50
security.txt is missing. 1.00

Lighthouse A11y

3.70

The accessibility is about average, but needs to get better.
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children. 1.00
[role]s are not contained by their required parent element 1.00
Background and foreground colors do not have a sufficient contrast ratio. 1.00
Links do not have a discernible name 1.00
List items (<li>) are not contained within <ul>, <ol> or <menu> parent elements. 1.00
<html> element does not have a [lang] attribute 1.00
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
Heading elements are not in a sequentially-descending order 1.00
Links are distinguishable without relying on color. 5.00
Lists contain only <li> elements and script supporting elements (<script> and <template>). 5.00
<frame> or <iframe> elements have a title 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
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
ARIA IDs are unique 5.00
Document has a main landmark. 5.00
Identical links have the same purpose. 5.00
Tables use <caption> instead of cells with the [colspan] attribute to indicate a caption. 5.00
<td> elements in a large <table> have one or more table headers. 5.00

Sitespeed.io

1.36

The website is quite slow. 1.36
Speedindex: 4140 1.36
Loading time: 1.59s
Number of requests: 117

Yellow Lab Tools

3.10

The website is neither good nor bad. 3.10
Page weight 2.55
Requests 2.90
DOM complexity 4.90
JS complexity 3.85
Bad JS 2.00
jQuery 5.00
CSS complexity 1.00
Bad CSS 3.60
Web fonts 1.25
Server config 3.50
Number of iframes 5.00
Total JS execution time 3.20
DOM access 5.00
Scroll events bound 4.30
document.write calls 5.00
Synchronous Ajax requests 1.00
Rules count 1.00
Total weight 2.20
Image optimization 4.30
Oversized images 5.00
Gzip/Brotli compression 3.00
File minification 1.00
Requests number 4.10
Different domains 1.00
404 not found 5.00
Connections closed 5.00
Identical content 5.00
Below the fold images 1.00
Webfonts number 1.00
Overweighted webfonts 1.00
WOFF 2 5.00
HTTP protocols 5.00
TLS protocols 2.00
Caching disabled 2.30
Caching not specified 5.00
Caching too short 1.00
jQuery version 5.00
TLS protocols 2.00
IDs duplicated 4.50
CSS syntax error 5.00
Gzip/Brotli compression 3.00
404 not found 5.00
TLS protocols 2.00

Pa11y

1.60

Number of error type: 14 2.20
Number of errors: 58 1.00

Problems:

A button element does not have a name available to an accessibility API. Valid names are: title undefined, element content, aria-label undefined, aria-labelledby undefined.
Align attributes .
A form field should be labelled in some way. Use the label element (either with a "for" attribute or wrapped around the form field), or "title", "aria-label" or "aria-labelledby" attributes as appropriate.
Anchor element found with a valid href attribute, but no link content has been supplied.
A element has role of "button" but does not have a name available to an accessibility API. Valid names are: element content, aria-label undefined, aria-labelledby undefined.
Img element missing an alt attribute. Use the alt attribute to specify a short text alternative.
A textinput element does not have a name available to an accessibility API. Valid names are: label element, title undefined, aria-label undefined, aria-labelledby undefined.
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 3.37:1. Recommendation: change text colour to #737373.
Iframe element requires a non-empty title attribute that identifies the frame.
A textarea element does not have a name available to an accessibility API. Valid names are: label element, title undefined, aria-label undefined, aria-labelledby undefined.
Info: Too many unique problems to show them all.

Integrity & Security

2.44

Rather poor on user privacy.
Result generated: 2024-04-05 08:34:28 Etc/UTC (Cached for 24 hours)
HTTPS by default: is good! 5.00
Strict Transport Security: 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 38 error(s) and 0 warning(s). 1.00

HTTP & Tech

4.11

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

2.15

The webpage generates some more carbon dioxide than is preferable :/
Carbon dioxide per pageview: 1.44 gram(s)
More green than 43 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
More green than 44 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
Network transfer size: 2 mb 2.15