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.
UD5 Toolkit
Check your SVG accessibility in seconds. Ensure proper ARIA roles for graphics, symbols, and documents.
graphics-symbol (for icons/signs), graphics-document (complex standalone graphics), and graphics-object (sub-parts). They help screen readers interpret visual information correctly.role="img" with an aria-label or graphics-document makes the graphic perceivable and operable for all users.role="img" is a general image role. graphics-symbol is more specific for icons and simple graphics that convey a single idea (like a gear icon). It tells assistive tech that the graphic is symbolic, often used with aria-label for a short text alternative.<svg role="graphics-symbol" aria-label="Settings">...</svg>. The role defines the type of graphic, and the aria-label provides the accessible name.<svg>, missing accessible names when roles are present, and <g> elements without role="group" when they contain relevant structure. It also suggests roles based on element type (e.g., <path> with aria-label → graphics-symbol).role="img" or graphics-symbol where appropriate, and inserts an aria-label placeholder if missing. You should replace the placeholder with meaningful text.Paste an HTML snippet and check for common ARIA mistakes: missing labels, invalid roles, and aria‑hidden misuse. Educate your team.
Paste HTML snippet and highlight interactive elements missing accessible labels. Quick a11y audit.
Enter a text color and background color and instantly see if the combination passes WCAG AA and AAA ratio. Safe colors.
Click to randomize geometric SVG patterns. Copy the inline SVG code for your website.
Convert English text to Braille (Grade 1 and simple Grade 2 contractions). Educational tool to understand Braille representation. Local only.
Create a 'drawing' effect for any SVG path. Adjust speed and delay. Copy the CSS and SVG code. No JS needed.
Paste an SVG and get an optimized, URL‑encoded data URI for use in CSS backgrounds. Reduces file size and escapes characters.
Enter a URL and fetch its text/background colors to perform a bulk contrast check. See warnings for WCAG violations.
Watch for updates to aria‑live regions and log what a screen reader would announce. Debug live regions.
Highlight elements with aria‑describedby and see the linked description text. Verify a11y annotations.
Adjust a brightness threshold slider and see the live vector trace of an image. Export as SVG. Potrace‑style.
Paste an SVG path and calculate its total length. Useful for stroke‑dasharray animations and drawing effects.
Check the Accessible Perceptual Contrast Algorithm (APCA) ratio. The next‑generation contrast method for WCAG 3.
Paste an SVG path and convert all relative commands to absolute. Also smooth curves to lines. Local parser.
Enter a URL and see a list of its ARIA landmarks (banner, main, nav). Check document structure for accessibility. Local fetch.
Enter foreground and background colors to instantly see the contrast ratio and pass/fail for AA and AAA. Simple and fast.
Inject dynamic messages into ARIA live regions and monitor how they trigger screen reader announcements. Debug a11y.
Paste an URL or HTML and see the h1‑h6 hierarchy as a tree. Detect skipped levels and improve accessibility. Client‑side.
Strip metadata, comments, and unnecessary precision from SVG files. Reduce file size. Pure browser SVG parser.
Paste a raster image and an SVG, see the file size and rendering time. Understand when to use vector. Local.
Trace the edges of an uploaded image and create a glowing neon SVG effect. Adjust glow color and thickness. Download SVG.
Paste an HTML snippet and convert it into an SVG image that visually replicates the DOM. Useful for creating static snapshots. Local canvas rendering.
Paste an SVG and get a ready‑to‑use data URI for CSS backgrounds or img tags. Optimized with URL encoding. All local.
Paste an SVG file and extract all path data. Clean and copy individual d strings. For icon manipulation.
Click to get a randomly generated, unique abstract icon (geometric pattern). Download as SVG. For placeholder avatars and designs.
Create smooth, animated CSS waves (like water or sound) by adjusting amplitude, colors, and speed. Copy the ready‑to‑use SVG/CSS code.
Paste or upload an SVG and convert it into a CSS background‑image data URI. Clean and ready to embed.
Given a background color, this tool suggests foreground colors that meet AA/AAA contrast ratios. Works for all vision types.
Enter a URL and extract tab‐index order violations and focusable elements. Quick accessibility audit. Client‑side fetch.
Calculate the perceived brightness of an RGB color and determine if black or white text is more readable. Accessibility tool.