Add README

README.md

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+# html2pdf-reader
+
+Convert web articles to PDF using the [Reader View](https://chromewebstore.google.com/detail/reader-view/ecabifbgmdmgdllomnfinbmaellmclnh) Chrome extension and headless Chrome (Puppeteer).
+
+## Features
+
+- Extracts article content via Mozilla Readability
+- Renders using Reader View for clean typography
+- Supports all Reader View themes: `light`, `dark`, `sepia`, `groove-dark`, `solarized-light`, `solarized-dark`, `nord-light`, `nord-dark`
+- Custom CSS injection
+- Syntax highlighting via highlight.js
+- Automatic reading time estimation
+- Configurable extension preferences
+
+## Installation
+
+```bash
+npm install
+```
+
+Extract the Reader View extension (get it using [CRX Downloader](https://chromewebstore.google.com/detail/crx-extractordownloader/ajkhmmldknmfjnmeedkbkkojgobmljda)):
+
+```bash
+mkdir -p extension/reader-view
+unzip extension/Reader-View-Chrome-Web-Store.zip -d extension/reader-view
+```
+
+## Usage
+
+```bash
+node src/index.js --help
+```
+
+```
+Usage: html2pdf-reader [options] <url>
+
+Arguments:
+  url                  URL of the article to convert
+
+Options:
+  -t, --theme <theme>  Reader View theme (light, dark, sepia, groove-dark, solarized-light, solarized-dark, nord-light, nord-dark)
+  -c, --css <path>     path to custom CSS file
+  -p, --prefs <path>   path to extension preferences JSON
+  -o, --output <path>  output file path (default: ./output/<title>.pdf)
+  -h, --help           display help for command
+```
+
+### Examples
+
+```bash
+node src/index.js https://example.com/article
+node src/index.js https://example.com/article --theme dark --css config/rules.css
+node src/index.js https://example.com/article --prefs config/reader-view-preferences.json
+npm start -- https://example.com/article --theme dark --css config/rules.css
+```
+
+### Running tests
+
+```bash
+npm test
+```
+
+The test script reads URLs from `src/test/test.txt` and runs multiple scenarios (default, dark, sepia, custom CSS, etc.).
+
+## Credits
+
+- [Reader View](https://chromewebstore.google.com/detail/reader-view/ecabifbgmdmgdllomnfinbmaellmclnh) Chrome extension
+- [Mozilla Readability](https://github.com/mozilla/readability)
+- [Puppeteer](https://pptr.dev/)
+- [highlight.js](https://highlightjs.org/)