UD5 Toolkit
Accessible Name & Description Inspector â Generate Aria Labels
Enter a visual UI element and the tool suggests proper ariaâlabels and descriptions. Learn to write meaningful text for screen readers.
Tag: Accessibility Checker - A11y
30+ toolsText Contrast Validator - Online WCAG AAA Checker
Enter a text color and background color and instantly see if the combination passes WCAG AA and AAA ratio. Safe colors.
Live Website Color Blindness Simulator â Enter URL
Enter any live URL and view it through eight different color vision deficiency filters. Identify contrast issues and improve your siteâs accessibility.
Focus Outline Styler - Online Design Accessible Rings
Design a custom focus indicator with outline, offset, and boxâshadow. Preview on interactive elements. Copy the CSS.
Skip Link Validator - Online See Bypass Blocks
Check if your site has a visible and functional skip navigation link. Key for keyboardâonly users.
Accessible Color Contrast Matrix â Online Paste Palette & Check
Paste hex colors, generate a contrast matrix against each other. Identify failing pairs for WCAG.
Alt Text Suggestion Tool - Online Image Description Generator
Upload an image and get a suggested alt text description using a local vision model (WASM). Improve SEO and accessibility fast.
<abbr> Tag Generator - Online HTML Abbreviation Builder
Type an abbreviation and its full form to get the proper `<abbr title='...'>` HTML. For accessible markup.
Gradient Text Contrast Checker â Online WCAG Over Background
Type text and set a gradient, then check contrast against a solid background. Ensure readability.
Image Alt Text Linter - Online Check Missing & Redundant Alts
Paste an HTML snippet and get a report on missing, empty, or suspicious alt texts. Improve your image SEO and a11y.
Tab Order Visualizer - Online See Focus Navigation Path
Enter a URL and see a visual map of the tab order. Detect broken tabindex values. Improve keyboard navigation.
contrastâcolor() Preview - Online Automatic Text Color
Test the upcoming contrastâcolor() CSS function. Get white or black automatically for a given background. See it live.
Skip Navigation Link Generator - Online A11y Helper
Create a properly styled 'Skip to Content' link. Customize target and appearance. Essential for keyboard users. Copy the HTML/CSS.
ARIA Graphics Roles Validator - Online Check SVG a11y
Paste an SVG and check if the graphicâaria roles are used correctly. Improve accessible diagrams and icons.
:focusâvisible vs :focus Demo - Online Accessible Outlines
See the difference between :focus and :focusâvisible on interactive elements. Learn which to use for better UX.
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.
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.
ARIA Attribute Validator - Online Check HTML Accessibility
Paste an HTML snippet and check for common ARIA mistakes: missing labels, invalid roles, and ariaâhidden misuse. Educate your team.
ariaâdescribedby Visualizer - Online Check Descriptions
Highlight elements with ariaâdescribedby and see the linked description text. Verify a11y annotations.
Heading Structure Visualizer - Online Document Outline Check
Paste an URL or HTML and see the h1âh6 hierarchy as a tree. Detect skipped levels and improve accessibility. Clientâside.
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.
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.
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.
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.
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.
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.
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.
Focus Order Analyzer - Online Tab Navigation Check
Enter a URL and extract tabâindex order violations and focusable elements. Quick accessibility audit. Clientâside fetch.
APCA Contrast Checker - Online New Accessible Perceptual Contrast
Check the Accessible Perceptual Contrast Algorithm (APCA) ratio. The nextâgeneration contrast method for WCAG 3.
Braille to Text Converter - Online Decode Dot Patterns
Enter Braille dot numbers (1â6) or paste Unicode Braille to decode into English text. Companion to textâtoâBraille.