C — https://www.freecodecamp.org

Site Health

Score: 75 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

'unsafe-eval' found in script source

Security › Content Security Policy

'unsafe-inline' found in script source

Security › Content Security Policy

No <main> landmark found

Accessibility › Landmark Structure

Cross-Origin-Embedder-Policy header is missing

Security › Security Headers

Cross-Origin-Opener-Policy header is missing

Security › Security Headers

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fwww.freecodecamp.org)](https://beavercheck.com/results/38f48373-ee21-a01f-89bd-6e55979ab0b0)

HTML

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Image URL

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.94 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

13.24 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.21 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.09 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

17.75 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Request	Cache TTL	Transfer Size
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	172800.0 s	726.3 KiB
js.stripe.com/v3	120.0 s	219.9 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	172800.0 s	467.5 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	172800.0 s	135.2 KiB
m.stripe.network/out-4.5.45.js	300.0 s	16.5 KiB
www.freecodecamp.org/static/Sarah-04dee53ff6709a3b1c0bbe0023554a46.png	172800.0 s	45.3 KiB
www.freecodecamp.org/static/Shawn-75f7dad2bfcbae1988440b303b5a465b.png	172800.0 s	44.9 KiB
www.freecodecamp.org/component---src-pages-index-tsx-593d70c38cd28a78f7ef.js	172800.0 s	40.4 KiB
www.freecodecamp.org/static/Lato-Regular-77ca2742388f408c3be7d0ec3e7dc392.woff	172800.0 s	37.3 KiB
www.freecodecamp.org/static/Lato-Bold-ba3a83adcb94357fc42f762985e4d3df.woff	172800.0 s	36.5 KiB
www.freecodecamp.org/static/Lato-Light-91308c0216b40aad16036f1394b98237.woff	172800.0 s	35.0 KiB
/static/Hack-ZeroSlash-Italic-678bc16b550480d5a3c5c76dbf8...	172800.0 s	34.3 KiB
/static/Hack-ZeroSlash-Bold-c8ea19a8461596cf1a6a2ad08bebc...	172800.0 s	29.7 KiB
/static/Hack-ZeroSlash-Regular-f67447de5dc6604f538786bd55...	172800.0 s	29.3 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
/d82bff99d17dc59c45b6281a99a3ed0ccb6fc4cd-aed71431ef4b123...	172800.0 s	11.8 KiB
www.freecodecamp.org/6d879f80-d104fde3d1d259ac57c1.js	172800.0 s	6.2 KiB
www.freecodecamp.org/webpack-runtime-a8251fda6df8e26fe320.js	172800.0 s	6.2 KiB
www.freecodecamp.org/4210-f31da1ff756e4220d61f.js	172800.0 s	2.0 KiB
www.freecodecamp.org/static/Lato-Bold-ba3a83adcb94357fc42f762985e4d3df.woff	172800.0 s	0 B

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

URL	Est Savings
www.freecodecamp.org/static/Lato-Regular-77ca2742388f408c3be7d0ec3e7dc392.woff	90 ms
www.freecodecamp.org/static/Lato-Bold-ba3a83adcb94357fc42f762985e4d3df.woff	50 ms

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

	URL	Resource Size	Est Savings
Sarah Chima, a young-looking Black woman, smiling for the camera while sitting … `div.testimonials-row > div.testimonial-card > div.testimonial-card-header > img.testimonial-image`	www.freecodecamp.org/static/Sarah-04dee53ff6709a3b1c0bbe0023554a46.png	44.5 KiB	24.6 KiB
Shawn Wang, a young-looking Asian man, smiling for a selfie with a snow-capped … `div.testimonials-row > div.testimonial-card > div.testimonial-card-header > img.testimonial-image`	www.freecodecamp.org/static/Shawn-75f7dad2bfcbae1988440b303b5a465b.png	44.1 KiB	24.2 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Estimated savings: 2.9 s 1.2 MiB

URL	Transfer Size	Est Savings
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	725.4 KiB	725.0 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	466.7 KiB	142.0 KiB
js.stripe.com/v3	219.5 KiB	141.3 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	130.9 KiB	78.5 KiB
www.googletagmanager.com/gtag/js?id=G-SF1BGBDCNS&cx=c&gtm=4e6460	154.7 KiB	64.7 KiB
/gtm.js?id=GTM-57R6KJM&gtm_auth=&gtm_preview=&gtm_cookies...	122.2 KiB	62.4 KiB
www.freecodecamp.org/component---src-pages-index-tsx-593d70c38cd28a78f7ef.js	39.6 KiB	21.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

URL	Total CPU Time	Script Evaluation	Script Parse
www.freecodecamp.org/app-f5209401474dfc55e08f.js	1.5 s	1.2 s	189 ms
www.freecodecamp.org/	564 ms	22 ms	2.7 ms
Unattributable	378 ms	13 ms	0.0 ms
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	360 ms	8.0 ms	351 ms
js.stripe.com/v3	322 ms	236 ms	80 ms
www.googletagmanager.com/gtag/js?id=G-SF1BGBDCNS&cx=c&gtm=4e6460	273 ms	222 ms	38 ms
/gtm.js?id=GTM-57R6KJM&gtm_auth=&gtm_preview=&gtm_cookies...	163 ms	122 ms	39 ms
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	54 ms	1.7 ms	48 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Category	Time Spent
Script Evaluation	1.9 s
Script Parsing & Compilation	768 ms
Other	552 ms
Style & Layout	221 ms
Garbage Collection	96 ms
Rendering	88 ms
Parse HTML & CSS	83 ms

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Estimated savings: 0.0 ms 66.9 KiB

URL	Transfer Size	Est Savings
.ais-Breadcrumb-list,.ais-CurrentRefinements-list,.ais-Hi...	70.6 KiB	66.9 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URL	Transfer Size
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	726.3 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	467.5 KiB
/v3/fingerprinted/js/controller-with-preconnect-e-031258a...	291.7 KiB
js.stripe.com/v3	219.9 KiB
js.stripe.com/v3/fingerprinted/js/shared-e-c7e13100b729f655fea25ff51251c15e.js	203.0 KiB
www.googletagmanager.com/gtag/js?id=G-SF1BGBDCNS&cx=c&gtm=4e6460	154.8 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	135.2 KiB
/gtm.js?id=GTM-57R6KJM&gtm_auth=&gtm_preview=&gtm_cookies...	122.6 KiB
www.freecodecamp.org/	72.9 KiB
www.freecodecamp.org/static/Sarah-04dee53ff6709a3b1c0bbe0023554a46.png	45.3 KiB

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 11 user timings

●Avoid long main-thread tasks 12 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 180 ms

●Server Backend Latencies 200 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 220 ms

○INP breakdown

○LCP request discovery

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Failing Elements
header.site-header > nav#universal-nav > div.universal-nav-right > a.signup-btn `header.site-header > nav#universal-nav > div.universal-nav-right > a.signup-btn`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

100

Best Practices

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

100

Accessibility

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

953 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.61 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

148 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.84 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.00 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Request	Cache TTL	Transfer Size
js.stripe.com/v3	120.0 s	224.4 KiB
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	172800.0 s	726.2 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	172800.0 s	467.5 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	172800.0 s	135.2 KiB
www.freecodecamp.org/static/wide-image-becdb4c281c527b989315b2f7ce20378.png	172800.0 s	101.1 KiB
www.freecodecamp.org/static/Emma-1384890b0c332b769f67e8c14b628e13.png	172800.0 s	58.0 KiB
m.stripe.network/out-4.5.45.js	300.0 s	16.5 KiB
www.freecodecamp.org/static/Sarah-04dee53ff6709a3b1c0bbe0023554a46.png	172800.0 s	45.3 KiB
www.freecodecamp.org/static/Shawn-75f7dad2bfcbae1988440b303b5a465b.png	172800.0 s	44.9 KiB
www.freecodecamp.org/component---src-pages-index-tsx-593d70c38cd28a78f7ef.js	172800.0 s	40.4 KiB
www.freecodecamp.org/static/Lato-Regular-77ca2742388f408c3be7d0ec3e7dc392.woff	172800.0 s	37.3 KiB
www.freecodecamp.org/static/Lato-Bold-ba3a83adcb94357fc42f762985e4d3df.woff	172800.0 s	36.5 KiB
www.freecodecamp.org/static/Lato-Light-91308c0216b40aad16036f1394b98237.woff	172800.0 s	35.0 KiB
/static/Hack-ZeroSlash-Italic-678bc16b550480d5a3c5c76dbf8...	172800.0 s	34.3 KiB
/static/Hack-ZeroSlash-Bold-c8ea19a8461596cf1a6a2ad08bebc...	172800.0 s	29.7 KiB
/static/Hack-ZeroSlash-Regular-f67447de5dc6604f538786bd55...	172800.0 s	29.3 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
/d82bff99d17dc59c45b6281a99a3ed0ccb6fc4cd-aed71431ef4b123...	172800.0 s	11.8 KiB
www.freecodecamp.org/6d879f80-d104fde3d1d259ac57c1.js	172800.0 s	6.2 KiB
www.freecodecamp.org/webpack-runtime-a8251fda6df8e26fe320.js	172800.0 s	6.1 KiB
www.freecodecamp.org/4210-f31da1ff756e4220d61f.js	172800.0 s	2.0 KiB

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

URL	Est Savings
www.freecodecamp.org/static/Lato-Regular-77ca2742388f408c3be7d0ec3e7dc392.woff	60 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:39.935 source:map[type:text value:[unattributed]]]]

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

	URL	Resource Size	Est Savings
A group of people, including a White man, a Black woman, and an Asian woman, ga… `div.mx-[-15px] > div.landing-top-right > figure > img.img-loaded`	www.freecodecamp.org/static/wide-image-becdb4c281c527b989315b2f7ce20378.png	100.3 KiB	46.2 KiB
Emma Bostian, a young-looking White woman, smiling for the camera in front of g… `div.testimonials-row > div.testimonial-card > div.testimonial-card-header > img.testimonial-image`	www.freecodecamp.org/static/Emma-1384890b0c332b769f67e8c14b628e13.png	57.2 KiB	40.6 KiB
Sarah Chima, a young-looking Black woman, smiling for the camera while sitting … `div.testimonials-row > div.testimonial-card > div.testimonial-card-header > img.testimonial-image`	www.freecodecamp.org/static/Sarah-04dee53ff6709a3b1c0bbe0023554a46.png	44.5 KiB	27.9 KiB
Shawn Wang, a young-looking Asian man, smiling for a selfie with a snow-capped … `div.testimonials-row > div.testimonial-card > div.testimonial-card-header > img.testimonial-image`	www.freecodecamp.org/static/Shawn-75f7dad2bfcbae1988440b303b5a465b.png	44.1 KiB	27.4 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

TTI

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Estimated savings: 840 ms 1.2 MiB

URL	Transfer Size	Est Savings
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	725.4 KiB	725.0 KiB
js.stripe.com/v3	224.1 KiB	145.8 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	466.7 KiB	142.1 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	130.9 KiB	78.5 KiB
www.googletagmanager.com/gtag/js?id=G-SF1BGBDCNS&cx=c&gtm=4e6460	154.7 KiB	64.8 KiB
/gtm.js?id=GTM-57R6KJM&gtm_auth=&gtm_preview=&gtm_cookies...	122.2 KiB	62.4 KiB
www.freecodecamp.org/component---src-pages-index-tsx-593d70c38cd28a78f7ef.js	39.6 KiB	21.1 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Estimated savings: 0.0 ms 65.9 KiB

URL	Transfer Size	Est Savings
.ais-Breadcrumb-list,.ais-CurrentRefinements-list,.ais-Hi...	70.8 KiB	65.9 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URL	Transfer Size
/c8f7fe3b0e41be846d5687592cf2018ff6e22687-40d71bcd1644bb1...	726.2 KiB
www.freecodecamp.org/app-f5209401474dfc55e08f.js	467.5 KiB
/v3/fingerprinted/js/controller-with-preconnect-272aa5fdb...	291.3 KiB
js.stripe.com/v3	224.4 KiB
js.stripe.com/v3/fingerprinted/js/shared-ced8e9af7114c65c180dd5b28af26ede.js	202.7 KiB
www.googletagmanager.com/gtag/js?id=G-SF1BGBDCNS&cx=c&gtm=4e6460	154.8 KiB
www.freecodecamp.org/7e3b4c62-ba61f723d90acd3f2bee.js	135.2 KiB
/gtm.js?id=GTM-57R6KJM&gtm_auth=&gtm_preview=&gtm_cookies...	122.6 KiB
www.freecodecamp.org/static/wide-image-becdb4c281c527b989315b2f7ce20378.png	101.1 KiB
www.freecodecamp.org/	73.0 KiB

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Max Potential First Input Delay 130 ms

●Layout shift culprits

●Document request latency

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 11 user timings

●JavaScript execution time 0.6 s

●Minimizes main-thread work 1.0 s

●Avoid long main-thread tasks 5 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 170 ms

●Server Backend Latencies 170 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 230 ms

○INP breakdown

○LCP request discovery

○Avoid non-composited animations

○Avoid large layout shifts

100

Accessibility

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
A group of people, including a White man, a Black woman, and an Asian woman, ga… `div.mx-[-15px] > div.landing-top-right > figure > img.img-loaded`	www.freecodecamp.org/static/wide-image-becdb4c281c527b989315b2f7ce20378.png	850 x 550 (1.55)	750 x 443 (1.69)

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

100

SEO

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Browse & Analyze

Learn

Results for https://www.freecodecamp.org

Site Health

Top Priorities (5)

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Names and labels

Best Practices

SEO

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Best Practices

User Experience

SEO

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