opticmsxperience .com

4.32

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

Lighthouse Performance

3.45

About average speed.
Total Blocking Time: 310 ms 3.85
Largest Contentful Paint: 4.6 s 1.70
Cumulative Layout Shift 5.00
First Contentful Paint: 3.6 s 1.65
Speed Index: 3.6 s 4.35
Eliminate render-blocking resources 1.00
Largest Contentful Paint element 1.00
Max Potential First Input Delay: 670 ms 1.00
Minify JavaScript 1.00
Preload Largest Contentful Paint image 1.00
Reduce unused CSS 1.00
Serve images in next-gen formats 1.00
Avoid serving legacy JavaScript to modern browsers: Potential savings of 12 KiB 2.50
Defer offscreen images: Potential savings of 8 KiB 2.50
Serve static assets with an efficient cache policy: 12 resources found 2.50
First Meaningful Paint: 3.6 s 3.05
Time to Interactive: 4.5 s 4.15
All text remains visible during webfont loads 5.00
Avoid chaining critical requests 5.00
Avoid large layout shifts 5.00
Avoid large layout shifts 5.00
Avoid long main-thread tasks 5.00
Avoid multiple page redirects 5.00
Avoids document.write() 5.00
Avoids an excessive DOM size 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
Image elements have explicit width and height 5.00
Initial server response time was short 5.00
JavaScript execution time 5.00
Largest Contentful Paint image was not lazily loaded 5.00
Metrics 5.00
Minify CSS 5.00
Minimize third-party usage 5.00
Minimizes main-thread work 5.00
Network Requests 5.00
Network Round Trip Times 5.00
Preconnect to required origins 5.00
Properly size images 5.00
Reduce unused JavaScript 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
Uses passive listeners to improve scrolling performance 5.00
Enable text compression 5.00

Lighthouse SEO

5.00

The website is really good at SEO!
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 are crawlable 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

5.00

The website is adhering to good practice according to Google Lighthouse!
Avoids deprecated APIs 5.00
Avoids third-party cookies 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
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
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

3.95

The tested page has 11 errors in its HTML code.
Number of grouped error type: 5 4.00
Number of errors: 11 3.90
Attribute X not allowed on element X at this point. (errors of this type: 6 pcs)
Element X not allowed as child of element X in this context. (Suppressing further errors from this subtree.) (errors of this type: 2 pcs)
An X element with a X attribute whose value is X and with a X attribute whose value is X must have an X attribute whose value is X. (errors of this type: 1 pcs)
The X element must not appear as a descendant of the X element. (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

4.40

The website can be more accessible, but is rather good!
Background and foreground colors do not have a sufficient contrast ratio. 1.00
Links rely on color to be distinguishable. 1.00
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
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 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
<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
Values assigned to role="" are not valid ARIA roles. 1.00
Skip links are focusable. 5.00
Image elements do not have [alt] attributes that are redundant text. 5.00

Sitespeed.io

5.00

The website is really fast! 5.00
Speedindex: 477 5.00
Loading time: 0.916 sec
Number of requests: 57

Yellow Lab Tools

4.60

The website has good frontend code. 4.60
Page weight 5.00
Requests 4.35
DOM complexity 5.00
JS complexity 5.00
Bad JS 5.00
jQuery 5.00
CSS complexity 1.00
Bad CSS 2.95
Web fonts 4.25
Server config 5.00
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 1.00
Total weight 5.00
Image optimization 5.00
Oversized images 5.00
Gzip/Brotli compression 5.00
File minification 5.00
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 3.75
Overweighted webfonts 4.50
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
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

3.95

The accessibility is apparently really bad! Probably both for disabled people and everyone of us when we need some accessibility!
Number of error type: 5 4.00
Number of errors: 11 3.90

Problems:

Anchor element found with a valid href attribute, but no link content has been supplied.
Iframe element requires a non-empty title attribute that identifies the frame.
Fieldset does not contain a legend element. All fieldsets should contain a legend element that describes a description of the field group.
Heading tag found with no content. Text that is not intended as a heading should not be marked up with heading tags.
A fieldset element does not have a name available to an accessibility API. Valid names are: legend element, aria-label undefined, aria-labelledby undefined.

Integrity & Security

3.31

Ok integrity but should get better.
Result generated: 2024-04-05 08:40:42 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

4.56

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
HTTPv3 support 5.00
QUIC support 5.00

Carbon Calculator

4.60

Webpage generates very little carbon dioxide!
Carbon dioxide per pageview: 0.35 gram(s)
More green than 92 % of the websites tested by webperf.se (Reference updated: 2022-12-16).
More green than 92 % of the websites tested by webperf.se (Reference updated: 2021-12-12).
Network transfer size: 560 kb 4.60