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apps/stirling-pdf/README.md

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+# Stirling-PDF
+
+[English](./README.md) | [中文](./README.zh.md)
+
+This service deploys Stirling-PDF, a locally hosted web-based PDF manipulation tool.
+
+## Services
+
+- `stirling-pdf`: The Stirling-PDF service.
+
+## Environment Variables
+
+| Variable Name        | Description                           | Default Value  |
+| -------------------- | ------------------------------------- | -------------- |
+| STIRLING_VERSION     | Stirling-PDF image version            | `latest`       |
+| PORT_OVERRIDE        | Host port mapping                     | `8080`         |
+| ENABLE_SECURITY      | Enable security features              | `false`        |
+| ENABLE_LOGIN         | Enable login functionality            | `false`        |
+| INITIAL_USERNAME     | Initial admin username                | `admin`        |
+| INITIAL_PASSWORD     | Initial admin password                | `admin`        |
+| INSTALL_ADVANCED_OPS | Install advanced operations           | `false`        |
+| LANGUAGES            | Supported languages (comma-separated) | `en_GB`        |
+| PUID                 | User ID to run the service            | `1000`         |
+| PGID                 | Group ID to run the service           | `1000`         |
+| UMASK                | File creation mask                    | `022`          |
+| DEFAULT_LOCALE       | Default system locale                 | `en-US`        |
+| APP_NAME             | Application name                      | `Stirling-PDF` |
+| HOME_DESCRIPTION     | Home page description                 | `""`           |
+| NAVBAR_NAME          | Navigation bar name                   | `""`           |
+| MAX_FILE_SIZE        | Maximum file size in MB               | `2000`         |
+| METRICS_ENABLED      | Enable metrics collection             | `false`        |
+| GOOGLE_VISIBILITY    | Allow Google indexing                 | `false`        |
+
+Please modify the `.env` file as needed for your use case.
+
+## Volumes
+
+- `stirling_trainingData`: OCR training data for Tesseract.
+- `stirling_configs`: Configuration files.
+- `stirling_logs`: Application logs.
+- `stirling_customFiles`: Custom files and templates.
+
+## Features
+
+Stirling-PDF supports 50+ PDF operations including:
+
+- Merge, split, rotate PDFs
+- Convert to/from PDF
+- OCR (Optical Character Recognition)
+- Add/remove watermarks
+- Compress PDFs
+- Encrypt/decrypt PDFs
+- Sign PDFs
+- Fill forms
+- Extract images and text
+- And much more!
+
+## Security Notes
+
+- By default, security is disabled for easy setup.
+- For production use, set `ENABLE_SECURITY=true` and `ENABLE_LOGIN=true`.
+- Change the default admin credentials before deployment.
+- Consider using a reverse proxy with HTTPS for secure access.
+
+## License
+
+Stirling-PDF is licensed under the MIT License.