Accessibility Tools - Inclusive Design

121

Relative Luminance Calculator - Online WCAG Metrics

Enter a hex color and get its relative luminance per WCAG definition. Understand why this matters for contrast.

Accessibility calculator color luminance WCAG

76

Text to Braille Image - Online Embossable PNG Generator

Convert short text into a black‑and‑white Braille bump image ready for embossing. Educational and inclusive.

Accessibility accessible Braille generator image

74

ASL Alphabet Quiz - Online Fingerspelling Practice

Test your knowledge of American Sign Language letters. See a sign and type the letter. Improve receptive skills. Local.

Accessibility alphabet ASL fingerspelling quiz

74

Braille to Text Converter - Online Decode Dot Patterns

Enter Braille dot numbers (1‑6) or paste Unicode Braille to decode into English text. Companion to text‑to‑Braille.

Accessibility accessibility Braille decode text

73

TTS Reader with Word Highlight - Online Speak & Read Along

Paste any text and have it read aloud while each spoken word is highlighted. Improve reading focus. Web Speech API.

Accessibility highlight read aloud speech TTS

69

APCA Contrast Checker - Online New Accessible Perceptual Contrast

Check the Accessible Perceptual Contrast Algorithm (APCA) ratio. The next‑generation contrast method for WCAG 3.

Accessibility accessibility APCA contrast WCAG 3

67

Speech Recognition Tester - Online Web Speech API Demo

Test your browser's built‑in speech recognition. Speak and see the transcribed text appear live. Must‑have for voice app devs.

Accessibility dictation recognition speech voice

65

Speech Synthesis Demo - Online Text to Voice with Controls

Write text and pick a voice, rate, and pitch to test your browser's speech synthesis capabilities. No download.

Accessibility speech synthesis TTS voice

65

Focus Order Analyzer - Online Tab Navigation Check

Enter a URL and extract tab‐index order violations and focusable elements. Quick accessibility audit. Client‑side fetch.

Accessibility accessibility focus keyboard tabindex

64

Accessible Color Contrast Finder - Online WCAG 2.1 Helper

Given a background color, this tool suggests foreground colors that meet AA/AAA contrast ratios. Works for all vision types.

Accessibility accessibility contrast finder WCAG

62

Text to Braille Converter - Online Grade 1 & 2 English

Convert English text to Braille (Grade 1 and simple Grade 2 contractions). Educational tool to understand Braille representation. Local only.

Accessibility accessibility braille converter text

58

Speech Utterance Tester - Online Play Word by Word

Hear text spoken word by word with boundary events. See the exact index and character. Advanced TTS dev tool.

Accessibility boundary SpeechSynthesis test TTS

58

Landmark Region Viewer - Online See ARIA Landmarks of Any Page

Enter a URL and see a list of its ARIA landmarks (banner, main, nav). Check document structure for accessibility. Local fetch.

Accessibility accessibility ARIA landmarks viewer

58

Perceived Brightness Calculator - Online Luminance Formula

Calculate the perceived brightness of an RGB color and determine if black or white text is more readable. Accessibility tool.

Accessibility accessibility brightness luminance WCAG

57

Accessible Palette Checker - Online Simulate & Recommend

Paste a set of hex colors and simulate how they appear with common color vision deficiencies. Get contrast warnings.

Accessibility accessible colorblind palette simulate

57

Colorblind Friendly Palette Checker - Online Simulate & Advise

Enter a color palette and see how it looks for different types of color vision deficiency. Get warnings on conflicting colors.

Accessibility accessible colorblind design palette

56

Text to Speech - Online Free TTS Reader & Converter

Type or paste text and have it read aloud by your browser's speech synthesis engine. Control voice, pitch, and rate. No download, works offline.

Accessibility reader text to speech TTS voice

55

Color Blindness Simulator - Online Vision Deficiency Preview

Simulate how images and UI elements appear to users with various types of color blindness. Upload or paste image URL. Promote inclusive design.

Accessibility accessibility color blindness simulator vision

53

Color Contrast Ratio Tester - Online WCAG AA/AAA Check

Enter foreground and background colors to instantly see the contrast ratio and pass/fail for AA and AAA. Simple and fast.

Accessibility accessibility checker contrast WCAG

53

Speech Live Counter - Online Count Spoken Words

Speak into the mic and see a live transcript with word count. Uses the Web Speech API. Nothing is stored.

Accessibility live recognition speech word count

53

Image Color Blindness Simulator - Upload & See

Upload any image and view it as a person with deuteranopia, protanopia, or tritanopia would. Promote inclusive design.

Accessibility color blindness daltonize image simulator

53

Accessible Text Formatter - Online Dyslexia Friendly Layout

Apply dyslexia‑friendly fonts, spacing, and background to any text. Preview and copy the formatted version. Improve readability.

Accessibility accessible dyslexia format text

52

Speech to Text Dictation - Online Transcribe Audio & Mic

Use your microphone to dictate text and see it appear live. Also upload an audio file for basic transcription. All local.

Accessibility dictation speech to text transcribe web speech

52

Colorblind‑Safe Palette Creator - Online for Data Viz

Generate a palette of N colors that are maximally distinguishable for common color vision deficiencies. Copy the hex codes.

Accessibility colorblind safe data viz generator palette

52

Speech to Text Dictation - Online Live Transcribe

Use the Web Speech API to turn your spoken words into text with punctuation. Copy and paste anywhere. Privacy‑first.

Accessibility dictation speech text transcribe

52

Color Contrast Checker - Online WCAG Accessibility Validator

Check the contrast ratio between foreground and background colors to ensure web accessibility compliance. Get WCAG 2.1 AA/AAA pass/fail results instantly.

Accessibility accessibility checker color contrast WCAG

51

ARIA Live Region Monitor - Online See Dynamic Announcements

Watch for updates to aria‑live regions and log what a screen reader would announce. Debug live regions.

Accessibility announcement ARIA live region monitor

50

aria‑hidden Conflict Finder - Online A11y Audit

Paste HTML and detect elements with aria‑hidden='true' that contain focusable children. An easy a11y win to fix.

Accessibility a11y aria‑hidden audit conflict

50

Text to Speech Reader - Online Listen to Any Text

Paste or type text and have it read aloud with natural voices. Control speed and pitch. Uses browser's built‑in TTS.

Accessibility reader text to speech TTS voice

49

Braille Alphabet Trainer - Online Learn Dot Patterns

Flashcards for learning Braille. See the dot pattern and type the letter. Track your speed and accuracy. Accessibility education.

Accessibility alphabet Braille dots trainer

49

prefers‑reduced‑motion Tester - Online A11y Check

Simulate reduced motion preference and test your animations. Copy the media query snippet. Keep your users safe.

Accessibility a11y media query prefers‑reduced‑motion test

48

Colored Overlay Simulator – Online Tinted Reader

Apply a color tint overlay over text to see if it helps reading comfort. Trial for visual stress.

Accessibility colored overlay reading tint

48

Colorblind-Safe Palette Builder - Online Check & Generate Schemes

Build a palette and simulate how it appears to various color deficiencies. Also generate pre-vetted accessible palettes. Local processing.

Accessibility accessible colorblind palette

48

aria‑describedby Visualizer - Online Check Descriptions

Highlight elements with aria‑describedby and see the linked description text. Verify a11y annotations.

Accessibility accessibility aria‑describedby debug visualizer

48

HTML lang Validator - Online Check Language Tag

Validate a language tag like en‑US or zh‑Hans against the IANA registry. Ensure correct HTML lang attribute.

Accessibility BCP 47 HTML lang validator

48

Heading Structure Visualizer - Online Document Outline Check

Paste an URL or HTML and see the h1‑h6 hierarchy as a tree. Detect skipped levels and improve accessibility. Client‑side.

Accessibility accessibility headings outline SEO

47

Live Site Contrast Checker - Online Audit By URL

Enter a URL and fetch its text/background colors to perform a bulk contrast check. See warnings for WCAG violations.

Accessibility accessibility audit contrast URL

47

Roving Tabindex Keyboard Nav - Online Accessible List

See the roving tabindex pattern in action. Use arrow keys to navigate a list. Copy the accessible JavaScript pattern.

Accessibility a11y demo keyboard roving tabindex

47

ARIA Live Region Tester - Online Screen Reader Update

Inject dynamic messages into ARIA live regions and monitor how they trigger screen reader announcements. Debug a11y.

Accessibility ARIA debug live region screen reader

47

ARIA Attribute Validator - Online Check HTML Accessibility

Paste an HTML snippet and check for common ARIA mistakes: missing labels, invalid roles, and aria‑hidden misuse. Educate your team.

Accessibility accessibility ARIA HTML validator

47

Screen Reader Test Snippet - Online Check HTML ARIA Labels

Paste an HTML snippet and see how a screen reader might interpret it. Highlights missing alt texts and ARIA misuses. Educational.

Accessibility accessibility ARIA HTML screen reader

46

Live Page Color Blindness Check – Online Enter URL

Enter a website URL and apply a protanopia/deuteranopia/tritanopia filter. Test full page accessibility.

Accessibility color blindness filter URL

46

Random Accessible Palette Generator - Online WCAG Safe

Generate a random 5‑color palette where every adjacent pair passes WCAG AA contrast. Safe for inclusive designs.

Accessibility accessible palette random WCAG

46

Accessible Color Pair Grid - Online WCAG Matrix for Vision Deficiencies

Enter foreground and background colors and see a matrix of how each pair works for normal, protanopia, deuteranopia, and tritanopia.

Accessibility colorblind color grid matrix WCAG

46

:focus‑visible vs :focus Demo - Online Accessible Outlines

See the difference between :focus and :focus‑visible on interactive elements. Learn which to use for better UX.

Accessibility accessibility CSS demo focus‑visible

46

Enhanced Color Blindness Simulator - Image & UI Combined

Upload an image and also see a UI mockup under different deficiencies side‑by‑side. Powerful for inclusive design.

Accessibility color blindness inclusive simulator UI

46

SSML Generator & TTS Demo - Online Speech Synthesis

Write SSML to control pitch, speed, and breaks. Play the generated speech with the browser’s TTS engine. Learn SSML.

Accessibility speech SSML synthesis TTS

46

Bulk Color Contrast Checker - Online WCAG Validation

Paste a list of foreground/background color pairs and instantly see which pass AA/AAA. Perfect for checking entire style guides.

Accessibility bulk checker contrast WCAG

45

Gradient Color Blindness Simulator - Online Test Palettes

Upload a gradient or enter a palette and simulate how it appears with different types of color vision deficiency. Ensure inclusive data visualization.

Accessibility color blindness gradient palette simulator

45

ARIA Graphics Roles Validator - Online Check SVG a11y

Paste an SVG and check if the graphic‑aria roles are used correctly. Improve accessible diagrams and icons.

Accessibility accessibility ARIA graphics SVG

45

SSML Marker Demo - Online TTS Events & Highlights

Use SSML <mark> tags to fire events during TTS. See text highlighted as it is spoken. Understand speech synthesis timing. local.

Accessibility mark speech SSML TTS

45

prefers‑contrast Tester - Online High/Low Contrast Emulator

Force more or less contrast and see how your page adapts. Test your CSS media queries for accessibility.

Accessibility a11y emulator media query prefers‑contrast

44

ARIA Label Checker – Online Paste HTML Search for Missing Labels

Paste HTML snippet and highlight interactive elements missing accessible labels. Quick a11y audit.

Accessibility ARIA label validator

44

Screen Reader Text Simulator - Online See What It Says

Enter an HTML snippet and see a rough transcription of what a screen reader might announce. Check alt texts.

Accessibility alt text announce screen reader simulator

44

Custom Focus Ring Styler - Online CSS :focus‑visible Designer

Design a custom focus indicator with outline, offset, and box‑shadow. Preview on interactive elements. Copy the CSS.

Accessibility a11y CSS designer focus ring

44

Accessible Color Contrast Grid - Online Test Combinations

Enter a palette of colors and see a grid showing whether each foreground/background pair passes AA or AAA contrast. Must for designers.

Accessibility checker contrast grid WCAG

43

Hex Contrast Grid – Online Test All Pair Combinations

List up to 10 colors and generate a contrast ratio matrix. See which pairs pass WCAG quickly.

Accessibility color contrast grid hex

43

Real‑Sample Contrast Checker - Online See Paragraph

See how a full paragraph looks with your chosen text and background colors. Not just a ratio; the real appearance.

Accessibility checker contrast real text WCAG

43

Speech to Text Dictation - Online Transcribe Audio & Mic

Use your microphone to dictate text and see it appear live. Also upload an audio file for transcription (limited). All local.

Accessibility dictation speech to text transcribe web speech

43

Screen Reader Text Optimizer - Online Improve Alt & Link Text

Analyze text for screen reader friendliness: detect vague link text, missing alt suggestions. Get a report. Local.

Accessibility alt text links optimizer screen reader