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+# Reilly SafariBooks Downloader (Chrome & Edge)
+
+This extension ports the `safaribooks.py` script into a browser workflow so you can download EPUBs directly from [learning.oreilly.com](https://learning.oreilly.com).
+
+## Installation (Chrome or Edge)
+
+1. **Clone / download** this repository to your computer and note the folder path (e.g. `C:\Users\joey\Projects\reilly-extension`).
+2. Open the browser's extensions page:
+   - **Chrome**: `chrome://extensions/`
+   - **Edge**: `edge://extensions/`
+3. Enable **Developer mode** (toggle in the top-right corner).
+4. Click **Load unpacked** and select this project folder.
+5. The “Reilly SafariBooks Downloader” icon should appear in the toolbar.
+
+## Usage
+
+1. Log into [learning.oreilly.com](https://learning.oreilly.com) in the same browser profile.
+2. Open any book page (URL containing `/library/view/`).
+3. Open the extension popup:
+   - The book ID is auto-detected and pre-filled when possible.
+   - Adjust theme or Kindle tweaks if desired.
+4. Click **Verify Session & Download**. The EPUB saves using the title, author, and ID.
+5. A “Download EPUB” button is also injected beside the book title (and as a floating action button) on each book page for quick access.
+
+## Notes
+
+- The extension uses your authenticated cookies; ensure you are signed in before downloading.
+- If an image fetch fails, the downloader logs each attempt and tries alternate URLs.
+- Placeholder icons live in the `images/` directory—swap them out with custom artwork if you prefer.