Reckue Languages

An interactive vocabulary builder for Chrome — click words on any page to save, highlight, and turn them into flashcards.

What it does

Reckue Languages is a Chrome extension (Manifest V3) that builds your vocabulary as you read. Browse the web normally; when you hit a word worth remembering, click it. The word is saved to your personal wordbook, highlighted on the page, and available as a flashcard in the popup.

Saved words stay highlighted across pages, so you keep seeing them in context — which is what makes them stick.

Features

• Save words with a single click on any page
• Per-level highlighting via the CSS Custom Highlight API (the page's own DOM is left untouched)
• A popup wordbook to review and manage what you've collected
• Works inside iframes and shadow DOM

Saved words highlighted by level, right in the page you're reading.

The popup wordbook — review and manage what you've collected.

Install

Get the published extension from the Chrome Web Store.

Build & run from source (development)

The extension is built from TypeScript with Webpack. To run it locally as an unpacked extension:

1. Install dependencies

npm install

2. Build the bundles

npm run build

This compiles the source in src/ into the loadable bundles:

• dist/page/page.js — content script
• dist/popup/popup.js — popup UI

3. Load it into Chrome

1. Open chrome://extensions/.
2. Enable Developer mode (top-right toggle).
3. Click Load unpacked and select this project's root folder (the one containing manifest.json).

4. Try it

Open any web page and click a word — it should be saved and highlighted. Open the extension popup to review your wordbook.

Tech stack

• TypeScript (target: es2022), bundled with Webpack 5 + ts-loader
• Content script (src/page/*) — vanilla TypeScript, direct DOM work, highlighting via the CSS Custom Highlight API
• Popup (src/popup/ui/*) — Preact

Contributing

Contributions are welcome. See CONTRIBUTING.md for the workflow, branch and commit conventions, and how to open a pull request. Found a bug or have an idea? Open an issue.

Privacy

All data stays on your device — the extension makes no external requests. See PRIVACY.md.

License

Licensed under the Apache License 2.0. See LICENSE.