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Accessibility

· 24 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
83
GRADE
B
FIX
4
REVIEW
2
PASS
18
INFO
0
Checks
24
18 PASS 2 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
Web Manifest
Action
Not found
FIX
Not found
Info::
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.

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::
5 navigation landmark(s) detected
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 5 <nav> element(s)
Back to Top
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.
B
Form Accessibility
2 of 3 controls have issues
REVIEW
2 of 3 controls have issues
Warning::
2 control(s) rely on placeholder only
Placeholder text disappears on focus and is not a reliable label.
Got: <input type="search" id="header-search">; <input type="search" id="mobile-search">
Info::
1 control(s) properly labeled
3 controls
1 labeled
2 placeholder only
0 unlabeled
ControlTypeLabelMethod
#hero-searchsearchSearchfor/id
#mobile-searchsearch(Search calculators, tables, guides…)placeholder only
#header-searchsearch(Search calculators, tables, guides…)placeholder only

Placeholder text disappears on focus and is not a reliable label.

<input type="search" id="header-search">; <input type="search" id="mobile-search">

Why this matters

Placeholder-only labels disappear when the user starts typing — they must remember what the field was for.

Learn more ▾

Placeholders are NOT labels. They vanish on input, fail color contrast checks (most are gray), and don't satisfy WCAG SC 3.3.2. Always use a real <label> alongside (or aria-labelledby).

Source: WCAG 2.1 SC 3.3.2 / Nielsen Norman

B
Dark Mode Support
Dark mode detected
REVIEW
Dark mode detected
Info::
prefers-color-scheme CSS detected in inline styles
Info::
Detection limited to meta tags and inline styles
External CSS files may contain prefers-color-scheme rules not visible to this scan.
Dark Mode✓ Dark Mode Supported
color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Detected ✓

Detection limited to meta tags and inline styles.

A
Landmark Structure
8 landmarks
PASS
8 landmarks
Info::
<main> landmark present
Info::
5 <nav> landmark(s) found
Info::
All <nav> elements are properly labeled
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 NAV "Primary" 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

A+
Heading Hierarchy
25 headings
PASS
25 headings
Info::
Single H1 present
  • H1 Free online math calculators with clear, step-by-step answers
  • H2 Popular Calculators
  • H3 Percentage Calculator
  • H3 Quadratic Equation Solver
  • H3 Compound Interest Calculator
  • H3 Triangle Area Calculator
  • H3 Fraction Calculator
  • H3 Mean Calculator
  • H3 Date Difference Calculator
  • H3 Pythagorean Theorem Calculator
  • H2 Explore Math Calculators by Category
  • H3 Basic Math
  • H3 Fractions & Decimals
  • H3 Percentages
  • H3 Geometry
  • H3 Algebra
  • H3 Statistics
  • H3 Finance
  • H3 Trigonometry
  • H3 Math Tables
  • H3 Math Practice
  • H3 Math Learning Guides
  • H2 Categories
  • H2 Explore
  • H2 Legal & Trust
A+
Heading Text Quality
All 25 heading(s) have substantive, well-formed text
PASS
All 25 heading(s) have substantive, well-formed text
Info::
Heading text quality is clean -- no placeholder, length, or styling issues
A+
Alt Text Quality
No images
PASS
No images
Info::
No images on this page
No images on this page.
A+
Form Input Types
3 form control(s) checked, no type mismatches
PASS
3 form control(s) checked, no type mismatches
Info::
No input-type mismatches detected
A+
Form Input Quality
3 form control(s) checked, no input-semantic issues
PASS
3 form control(s) checked, no input-semantic issues
Info::
All form input semantics look correct
A+
Mobile Keyboard & Autofill
No autofill-eligible form controls
PASS
No autofill-eligible form controls
Info::
No autofill-eligible form controls (no name/email/tel/address fields)
A+
Document Language
Lang attribute set to "en"
PASS
Lang attribute set to "en"
Info::
<html lang="en"> is set and valid
Got: en
A+
Tabindex Anti-Patterns
No explicit tabindex attributes found
PASS
No explicit tabindex attributes found
Info::
No explicit tabindex attributes found
A+
Iframe Accessibility
No iframes on this page
PASS
No iframes on this page
Info::
No iframes on this page
A+
Tap Target Adequacy
All tap targets meet WCAG 2.5.5/2.5.8 sizing
PASS
All tap targets meet WCAG 2.5.5/2.5.8 sizing
Info::
All tap targets meet WCAG 2.5.5 (44x44px) sizing
A+
Mobile-Readable Font Sizes
All 102 visible text node(s) render at >= 12 CSS pixels
PASS
All 102 visible text node(s) render at >= 12 CSS pixels
Info::
All text uses legible mobile font sizes (>= 12 CSS px)
A
404 Error Page
HTTP 404, custom page
PASS
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
Info::
Search form present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title Page Not Found — MathKit ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✓
A+
PWA Depth
No PWA depth issues detected
PASS
No PWA depth issues detected
Info::
No PWA depth issues detected
A+
Mobile UX Depth
1 mobile-depth signal(s) detected
PASS
1 mobile-depth signal(s) detected
Info::
No `<meta name="theme-color">` -- browser chrome falls back to default
Without `theme-color`, Android Chrome's status bar and iOS Safari's toolbar fall back to a generic gray. Adding a single hex color in `<meta name="theme-color" content="#0066cc">` tints them to your brand color across all mobile browsers.
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 Free online math cal…18.42:13.0:1
#000000
#EFF0F2
Pass
h2 Popular Calculators18.42:13.0:1
#000000
#EFF0F2
Pass
h2 Explore Math Calcula…18.91:13.0:1
#000000
#F2F3F5
Pass
h2 Categories18.91:13.0:1
#000000
#F2F3F5
Pass
h2 Explore18.91:13.0:1
#000000
#F2F3F5
Pass
h2 Legal & Trust18.91:13.0:1
#000000
#F2F3F5
Pass
h3 Math Tables18.91:13.0:1
#000000
#F2F3F5
Pass
h3 Math Practice18.91:13.0:1
#000000
#F2F3F5
Pass
h3 Math Learning Guides18.91:13.0:1
#000000
#F2F3F5
Pass
title Free Online Math Cal…19.82:14.5:1
#000000
#F9F8F9
Pass
span ∑18.97:14.5:1
#000000
#F4F3F4
Pass
span Math18.42:14.5:1
#000000
#EFF0F2
Pass
span Kit18.42:14.5:1
#000000
#EFF0F2
Pass
a Calculators18.42:14.5:1
#000000
#EFF0F2
Pass
a Tables18.42:14.5:1
#000000
#EFF0F2
Pass
a Practice18.42:14.5:1
#000000
#EFF0F2
Pass
a Guides18.42:14.5:1
#000000
#EFF0F2
Pass
span Menu18.42:14.5:1
#000000
#EFF0F2
Pass
a Calculators18.42:14.5:1
#000000
#EFF0F2
Pass
a Tables18.42:14.5:1
#000000
#EFF0F2
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.

A+
Lighthouse Accessibility Audits
Score 96/100 — 1 failing, 22 passed
PASS
96

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

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Menu Calculators Tables Practice Guides div.mx-auto > div.flex > astro-island > div#mobile-menu

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.

○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
●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
●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 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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●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.
○Image elements have `[alt]` attributes
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○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.
○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.
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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