Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Checks

6 PASS 2 REVIEW 5 FIX

Favicon & Branding

Action

1 icon(s) detected

FIX

1 icon(s) detected

favicon.ico present at site root

No apple-touch-icon detected

iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.

✓ favicon.ico Present

✗ PNG Icons Missing

✗ Apple Touch Missing

✗ SVG Favicon Missing

✗ Manifest Icons Missing

✗ Multiple Sizes Missing

Web Manifest

Action

Not found

FIX

Not found

No web manifest found

No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

No web manifest found.

Dark Mode Support

Action

No dark mode signals

FIX

No dark mode signals

No dark mode signals detected

Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.

Detection limited to meta tags and inline styles

External CSS files may contain prefers-color-scheme rules not visible to this scan.

Dark ModeNo Dark Mode Detected

color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Not detected ✗

Detection limited to meta tags and inline styles.

Print Stylesheet

Action

No print styles

FIX

No print styles

No print-specific styles detected

When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.

Print Stylesheet No Print Styles

Print stylesheet Not found ✗Inline @media print Not detected ✗

Navigation UX

Action

No navigation patterns

FIX

No navigation patterns

1 navigation landmark(s) detected

Hamburger menu detected (responsive design)

No breadcrumbs, search, or skip link detected

These navigation aids help users orient themselves and find content efficiently, especially on large sites.

Breadcrumbs

Skip Link

Labeled Navigation 1 <nav> element(s)

Hamburger Menu

Sticky Navigation Cannot reliably detect (CSS-based)

2 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.

404 Error Page

HTTP 404, custom page

REVIEW

HTTP 404, custom page

Correct 404 status code returned

Got: HTTP 404

Custom styled 404 page

Navigation links present on 404 page

Homepage link present on 404 page

404 Page Quality ✓ Custom 404 Page

Status Code HTTP 404 ✓Page Title 404 Page not found - Let's Encrypt ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗

Color Contrast (Screenshot)

Action

20 text elements analyzed, 20 fail WCAG AA

REVIEW

Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.

0 pass 20 fail WCAG AA

h1 Encryption for

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

32px · bottom of viewport

h1 Everybody

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

32px · bottom of viewport

h1 Getting started

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

32px · bottom of viewport

h2 A nonprofit providing free TLS certifica…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 websites.

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 Explore our work to improve security and…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 From our blog

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 Global impact made possible by

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 Let's Encrypt Growth

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 More ways we're improving security and p…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h2 Major Sponsors and Funders

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

24px · bottom of viewport

h3 Simplifying Certificate Renewals for Mil…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Six-Day and IP Address Certificates Avai…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Shorter Certificate Lifetimes and Rate L…

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Support Encryption for Everybody

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Leading Through Sponsorship

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Diamond Level

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Platinum Level

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Gold Level

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

h3 Silver Level

1.43:1

#000000

#1E2939

needs 3.0:1 (large text)

19px · bottom of viewport

Show all checked elements (20)

Element	Ratio	Required	FG	BG	Result
h1 Encryption for	1.43:1	3.0:1	#000000	#1E2939	Fail
h1 Everybody	1.43:1	3.0:1	#000000	#1E2939	Fail
h1 Getting started	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 A nonprofit providin…	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 websites.	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 Explore our work to …	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 From our blog	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 Global impact made p…	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 Let's Encrypt Growth	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 More ways we're impr…	1.43:1	3.0:1	#000000	#1E2939	Fail
h2 Major Sponsors and F…	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Simplifying Certific…	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Six-Day and IP Addre…	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Shorter Certificate …	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Support Encryption f…	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Leading Through Spon…	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Diamond Level	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Platinum Level	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Gold Level	1.43:1	3.0:1	#000000	#1E2939	Fail
h3 Silver Level	1.43:1	3.0:1	#000000	#1E2939	Fail

Methodology: The top 20 text elements by font size were checked. Background color was sampled from the desktop screenshot using a 5-point pattern. WCAG 2.1 AA requires 4.5:1 for normal text and 3:1 for large text.

Landmark Structure

5 landmarks

PASS

5 landmarks

<main> landmark present

1 <nav> landmark(s) found

Skip navigation link is missing (WCAG 2.4.1)

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Page Structure — as a screen reader sees it

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Why this matters

Without a skip-nav link, keyboard users tab through every nav item before reaching content — every page, every visit.

Learn more ▾

WCAG 2.4.1 (Bypass Blocks) requires a mechanism to skip past repeated content. The standard implementation is a 'Skip to main content' link that's the first focusable element, visually hidden until focused. Three lines of HTML + four of CSS.

Source: WCAG 2.1 SC 2.4.1

Heading Hierarchy

19 headings

PASS

19 headings

Multiple H1 headings (2 found)

A page should have only one H1. Multiple H1s dilute the document outline.

H1 Encryption for Everybody
H2 A nonprofit providing free TLS certificates to more than 700M0M websites.
H2 Explore our work to improve security and privacy
H2 From our blog
H3 Simplifying Certificate Renewals for Millions of Domains with ACME Renewal Information (ARI)
H3 Six-Day and IP Address Certificates Available in Certbot
H3 Shorter Certificate Lifetimes and Rate Limits
H1 Getting started duplicate H1
H2 Global impact made possible by generosity
H3 Support Encryption for Everybody
H3 Leading Through Sponsorship
H2 Let's Encrypt Growth
H2 More ways we're improving security and privacy
H2 Major Sponsors and Funders
H3 Diamond Level
H3 Platinum Level
H3 Gold Level
H3 Silver Level
H4 Subscribe for email updates about Let's Encrypt and other ISRG projects

A page should have only one H1. Multiple H1s dilute the document outline.

Why this matters

Multiple H1s blur the page's primary topic — screen-reader users and Google both prefer one H1.

Learn more ▾

HTML5's outline algorithm technically allows multiple H1s within sectioning content, but no browser implements it. In practice: one H1 per page. Use H2-H6 for subsections.

Source: WCAG 2.4.6 / Google Search Central

A+

Alt Text Quality

All 93 images OK

PASS

All 93 images OK

5 decorative image(s) correctly marked

88 image(s) with good alt text

93 images 88 good alt text 5 decorative

All images have appropriate alt text.

A+

Form Accessibility

No form controls

PASS

No form controls

No form controls on this page

No form controls found.

Link & Button Quality

157 links, 8 buttons — all OK

PASS

157 links, 8 buttons — all OK

7 link(s) open in new tab without warning

Add '(opens in new tab)' to link text or aria-label.

Got: https://memorysafety.org; https://divviup.org; https://www.abetterinternet.org; https://github.com/letsencrypt; https://www.linkedin.com/company/lets-encrypt/; https://www.abetterinternet.org/terms-of-service; https://www.abetterinternet.org/trademarks

150 link(s) with descriptive text

157 links

0 empty

0 generic text

7 new tab

0 empty buttons

Element	Text	Issue	Suggested Fix
https://memorysafety.org	Focused on memory safety in cr…	new tab	Add '(opens in new tab)' to text
https://divviup.org	A privacy-respecting system fo…	new tab	Add '(opens in new tab)' to text
https://www.abetterinternet.org	Internet Security Research Gro…	new tab	Add '(opens in new tab)' to text
https://github.com/letsencrypt	GitHub	new tab	Add '(opens in new tab)' to text
https://www.linkedin.com/company/lets-en…	LinkedIn	new tab	Add '(opens in new tab)' to text
https://www.abetterinternet.org/terms-of…	Terms	new tab	Add '(opens in new tab)' to text
https://www.abetterinternet.org/trademar…	Trademark Policy	new tab	Add '(opens in new tab)' to text

158 links and buttons have descriptive text

Add '(opens in new tab)' to link text or aria-label.

https://memorysafety.org; https://divviup.org; https://www.abetterinternet.org; https://github.com/letsencrypt; https://www.linkedin.com/company/lets-encrypt/; https://www.abetterinternet.org/terms-of-service; https://www.abetterinternet.org/trademarks

Why this matters

Links with target="_blank" without rel="noopener" leak the originating page's window context — security and UX issue.

Learn more ▾

Without rel="noopener", the new tab can navigate the original tab via window.opener (tab-nabbing attack). Modern browsers default to noopener for target=_blank but only since recent versions. Always set rel="noopener noreferrer" explicitly.

Source: MDN target / OWASP

A+

Lighthouse Accessibility Audits

Score 96/100 — 1 failing, 25 passed

PASS

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.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Zoom `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`
Pan `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`
Zoom in `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`
Zoom out `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`
Autoscale `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`
Reset axes `div.modebar-container > div#modebar-54228e > div.modebar-group > button.modebar-btn`

These items highlight common accessibility best practices.

○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

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

●`<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

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[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

○`<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.

○Skip links are focusable.

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

○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.

○`[lang]` attributes have a valid value

○`<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.

○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.

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.