Accessibility Utils

A suite of browser-based accessibility testing and validation tools. Check WCAG compliance, test screen reader output, validate ARIA markup, and analyze readability — all client-side.

Visual & Color

Color Blindness Simulator

Preview how images and palettes appear to people with protanopia, deuteranopia, tritanopia, and other color vision deficiencies.

WCAG Contrast Checker

Check foreground/background color contrast ratios against WCAG 2.1 AA and AAA standards.

Structure & Markup

Alt Text Generator

Generate descriptive alt text for images following WCAG best practices to improve screen reader experience.

ARIA Label Validator

Validate ARIA attributes in your HTML. Detect missing labels, empty values, redundant attributes, and WCAG violations.

Heading Structure Checker

Analyze HTML heading hierarchy for skipped levels, missing h1, duplicate h1 tags, and WCAG compliance issues.

Navigation & Screen Readers

Keyboard Navigation Tester

Test focus order, tab traps, missing focus indicators, and keyboard-only usability of interactive elements.

Screen Reader Simulator

Simulate how screen readers interpret your HTML — headings, ARIA, alt text, landmarks, and reading order.

Text to Speech

Convert text to natural-sounding audio using browser speech synthesis. Choose voices, adjust speed and pitch.

Readability & Content

Font Size Scale

Preview and compare font sizes for readable, accessible typography across headings and body text.

Reading Level Analyzer

Analyze Flesch-Kincaid readability scores and grade level to ensure content is accessible to your target audience.

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