A11Y Cat Extension

Internal Chrome documentation

Installation and setup

How authorized internal Chrome users should install, verify, update, and remove the extension.

Internal Chrome status

These instructions are for authorized internal Chrome users. Use internal distribution channels only, do not publish the install link, and do not claim broad public Chrome Web Store release or production certification.

Prerequisites

  • A Chromium-family browser that supports Manifest V3 extensions.
  • A trusted copy of the extension package or repository checkout.
  • Permission to review the target pages and handle any exported evidence.
  • Awareness that browser-restricted pages and some enterprise-managed contexts may block injection.

Load the extension

  1. 1

    Build or obtain the package

    Use the approved internal Chrome listing, an authorized internal install link, or the repository-supported extension build output for development and verification. Do not publish the internal install link or use legacy bookmarklet instructions for the extension.

  2. 2

    Open the browser extensions page

    Open chrome://extensions or the equivalent Chromium extensions manager.

  3. 3

    Enable developer mode

    Developer mode is required for local unpacked extension testing.

  4. 4

    Load the unpacked extension

    Select the built extension directory, normally dist-extension for release-style local testing.

  5. 5

    Verify the action button

    Pin or open the A11Y Cat action and run a smoke scan on an authorised test page.

Update and removal

TaskActionEvidence to keep
Update extension buildRebuild or replace the package, then reload the extension in the browser manager.Package source, commit, browser version, and smoke-scan result.
Remove extension buildRemove the extension from the browser manager.Record any exported evidence retained outside the browser.
Clear local dataUse the extension local data controls where supported, then remove exported files according to your policy.Clear-data action date and retained export location if applicable.