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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
55
GRADE
D
FIX
4
REVIEW
6
PASS
3
INFO
0
Checks
13
3 PASS 6 REVIEW 4 FIX
F
Favicon & Branding
Action
1 icon(s) detected
FIX
1 icon(s) detected
Info::
favicon.ico present at site root
Info::
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
D
Dark Mode Support
Action
No dark mode signals
FIX
No dark mode signals
Info::
No dark mode signals detected
Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
Info::
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.

D
Print Stylesheet
Action
No print styles
FIX
No print styles
Info::
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 ✗
F
Navigation UX
Action
No navigation patterns
FIX
No navigation patterns
Info::
Hamburger menu detected (responsive design)
Info::
No breadcrumbs, search, or skip link detected
These navigation aids help users orient themselves and find content efficiently, especially on large sites.
Breadcrumbs
Search
Skip Link
Labeled Navigation
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
1 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.
B
Landmark Structure
3 landmarks
REVIEW
3 landmarks
Info::
<main> landmark present
Warning::
No <nav> landmark found
Warning::
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
BANNER header MAIN CONTENTINFO footer

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

C
Heading Hierarchy
Action
10 headings, 3 skip(s)
REVIEW
10 headings, 3 skip(s)
Info::
Single H1 present
Warning::
Heading level skipped: H2 → H4 (missing H3)
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
Warning::
Heading level skipped: H2 → H4 (missing H3)
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
Warning::
Heading level skipped: H2 → H4 (missing H3)
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
  • H1 Teach and learn math in a smarter way
  • H2 Trusted by millions of teachers and students worldwide
  • H4 Teachers & Students skipped
  • H2 Make math interactive
  • H4 Teachers & Students skipped
  • H2 Explore math with free calculators
  • H4 Teachers skipped
  • H2 Engage every student
  • H2 Our mission
  • H2 Get started using GeoGebra today

Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

Why this matters

Skipping heading levels breaks the document outline — screen-reader users lose track of section nesting.

Learn more ▾

Screen reader users navigate by jumping between headings (H1 → H2 → H3). Skipping (H1 → H3) breaks the sense of hierarchy. Use sequential levels even if you don't like the default styling — restyle with CSS instead. WCAG 1.3.1 (Info and Relationships) treats this as an A failure.

Source: WCAG 2.1 SC 1.3.1 / W3C WAI

Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

Why this matters

Skipping heading levels breaks the document outline — screen-reader users lose track of section nesting.

Learn more ▾

Screen reader users navigate by jumping between headings (H1 → H2 → H3). Skipping (H1 → H3) breaks the sense of hierarchy. Use sequential levels even if you don't like the default styling — restyle with CSS instead. WCAG 1.3.1 (Info and Relationships) treats this as an A failure.

Source: WCAG 2.1 SC 1.3.1 / W3C WAI

Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

Why this matters

Skipping heading levels breaks the document outline — screen-reader users lose track of section nesting.

Learn more ▾

Screen reader users navigate by jumping between headings (H1 → H2 → H3). Skipping (H1 → H3) breaks the sense of hierarchy. Use sequential levels even if you don't like the default styling — restyle with CSS instead. WCAG 1.3.1 (Info and Relationships) treats this as an A failure.

Source: WCAG 2.1 SC 1.3.1 / W3C WAI

B
404 Error Page
HTTP 404, custom page
REVIEW
HTTP 404, custom page
Info::
Correct 404 status code returned
Got: HTTP 404
Info::
Custom styled 404 page
Info::
Navigation links present on 404 page
Info::
Homepage link present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917 ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗
C
Web Manifest
Action
Valid manifest
REVIEW
Valid manifest
Info::
Name present: GeoGebra Graphing Calculator App on Android
Warning::
No 192x192 icon
A 192px icon is required for PWA installation.
Info::
Display mode: standalone
PWA Install Criteria Not Installable
Name GeoGebra Graphing Calculator App on Android ✓192×192 icon ✗512×512 icon ✗Start URL / ✓Display Mode standalone ✓
Name GeoGebra Graphing Calculator App on Android Display Mode standalone
B
Lighthouse Accessibility Audits
Score 81/100 — 5 failing, 22 passed
REVIEW
81

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.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Resources Number Sense Algebra Geometry Measurement Operations Probabilit… div.relative > div.absolute > div.min-h-0 > div

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Nancy Swarat figure.flex > div.flex > div.flex > p.text-[14px]
Irina Kimyagarov figure.flex > div.flex > div.flex > p.text-[14px]
Steven C. Silvestri figure.flex > div.flex > div.flex > p.text-[14px]
Peter Myers figure.flex > div.flex > div.flex > p.text-[14px]
Maria Meyer figure.flex > div.flex > div.flex > p.text-[14px]
© 2026 GeoGebra® div.flex > div.flex > div.flex > p.pb-4

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TEACHERS & STUDENTS div.flex > div.md:flex-1 > div > h4.text-[16px]
TEACHERS & STUDENTS div.flex > div.md:flex-1 > div > h4.text-[16px]
TEACHERS div.flex > div.md:flex-1 > div > h4.text-[16px]

These are opportunities to improve keyboard navigation in your application.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.w-6 > div.flex > div.relative > input.peer/search-input div.w-6 > div.flex > div.relative > input.peer/search-input

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
footer.w-full > div.mx-auto > div.flex > a.py-4 footer.w-full > div.mx-auto > div.flex > a.py-4
div.flex > div.flex > div.flex > a div.flex > div.flex > div.flex > a

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]`s are contained by their required parent element
●`[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
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●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 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
○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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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
○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.
A+
Alt Text Quality
All 23 images OK
PASS
All 23 images OK
Info::
23 image(s) with good alt text
23 images 23 good alt text
All images have appropriate alt text.
A
Form Accessibility
1 of 1 controls have issues
PASS
1 of 1 controls have issues
Critical::
1 control(s) without accessible label
Form controls need a <label>, aria-label, or aria-labelledby for screen readers.
Got: <input type="text" name="search_input">
1 controls
0 labeled
0 placeholder only
1 unlabeled
ControlTypeLabelMethod
search_inputtext(none)none

Form controls need a <label>, aria-label, or aria-labelledby for screen readers.

<input type="text" name="search_input">

Why this matters

Form controls without labels — assistive tech announces 'edit text' with no context; users can't complete forms.

Source: WCAG 2.1 SC 3.3.2

A+
Color Contrast (Screenshot)
20 text elements analyzed, 0 fail WCAG AA
PASS

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

20 pass
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h1 Teach and learn math…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Trusted by millions …21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Make math interactiv…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Explore math with fr…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Engage every student21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Our mission21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Get started using Ge…21.00:13.0:1
#000000
#FFFFFF
Pass
title GeoGebra - the world…21.00:14.5:1
#000000
#FFFFFF
Pass
span Resources21.00:14.5:1
#000000
#FFFFFF
Pass
span Calculators21.00:14.5:1
#000000
#FFFFFF
Pass
button Join Lesson21.00:14.5:1
#000000
#FFFFFF
Pass
button Sign in21.00:14.5:1
#000000
#FFFFFF
Pass
span Search21.00:14.5:1
#000000
#FFFFFF
Pass
span Resources21.00:14.5:1
#000000
#FFFFFF
Pass
p Number Sense21.00:14.5:1
#000000
#FFFFFF
Pass
p Understanding number…21.00:14.5:1
#000000
#FFFFFF
Pass
p Algebra21.00:14.5:1
#000000
#FFFFFF
Pass
p Using symbols to sol…21.00:14.5:1
#000000
#FFFFFF
Pass
p Geometry21.00:14.5:1
#000000
#FFFFFF
Pass
p Studying shapes, siz…21.00:14.5:1
#000000
#FFFFFF
Pass

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.

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

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