# Page Not Found

The URL `microservices/authentication` does not exist.

You might be looking for one of these pages:
- [Communication](https://documentation.renda.io/microservices/communication.md)
- [Time based Authentication](https://documentation.renda.io/microservices/time-based-authentication.md)
- [QR Code Generation](https://documentation.renda.io/microservices/qr-code-generation.md)
- [HTML to PDF](https://documentation.renda.io/microservices/generate-pdf.md)
- [PDF Transformation](https://documentation.renda.io/microservices/pdf-converter.md)

## How to find the correct page

1. **Ask a question**: /sitemap.md?ask=<question> - Complete answer with sources
2. **Browse the full index**: [/sitemap.md](https://documentation.renda.io/sitemap.md) - Complete documentation index
3. **View the full content**: [/llms-full.txt](https://documentation.renda.io/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/microservices/communication.md`)
- Use `Accept: text/markdown` header for content negotiation