LasMind Vision – Accessibility Widget Engine

The accessibility engine behind the LasMind Vision website menu, the LasMind Vision browser extension and @lasmind/website-accessibility. No framework, no network calls.

Most sites want the ready-made menu: use @lasmind/website-accessibility. Use this package to build your own UI.

npm install @lasmind/website-accessibility-core

import { createPageApplier, normalizeSettings, withPatch } from "@lasmind/website-accessibility-core";

const applier = createPageApplier(document);
let settings = normalizeSettings(JSON.parse(localStorage.getItem("my-a11y") ?? "null"));

settings = withPatch(settings, { vision: "deuteranopia", underlineLinks: true });
applier.apply(settings);
localStorage.setItem("my-a11y", JSON.stringify(settings));

What is included

• settings: one schema for every feature, normalizeSettings (also reads older LasMind data), withPatch.
• vision: colour correction (daltonize) matrices for protanopia, deuteranopia and tritanopia, with a strength from 0 to 1, plus greyscale.
• apply: createPageApplier injects the CSS into the page and open shadow roots. rootAttributes and createInitScript are for sites that style themselves from <html> attributes.
• speech: read aloud with the browser's own voices (createSpeaker, createReadAloud), including Hindi and Tamil when the device has those voices.
• guide: spoken step-by-step guidance (createGuide).
• @lasmind/website-accessibility-core/screening: the colour vision screening engine and plate renderer. On the LasMind site it is shown at lasmind.com/tools/color-blind-test. It checks one eye at a time for red-green colour differences.

The screening is a screening, not a medical diagnosis. If you show it, say so to your users, and treat results as health data under your privacy policy. This engine is a preference menu, not a way to claim a site is WCAG or ADA compliant.

Learn more about accessibility at the W3C Web Accessibility Initiative.

License

• Versions 0.2.0 and earlier: MIT, by LasMind Technologies. Those MIT rights are permanent.
• Version 0.3.0 onward: LasMind Commercial License. Free for personal, non-commercial use. Commercial or production use by an organization needs a license.

Full terms: https://lasmind.com/license. For a commercial license, talk to sales at https://lasmind.com/contact-us?interest=lasmind-vision-license#enquiry or [email protected].