# Page Not Found

The URL `v0.12/articles/filter-plugin-overview` does not exist.

You might be looking for one of these pages:
- [Plugin Helper API](https://docs.fluentd.org/plugin-helper-overview.md)
- [Simple Stream Processing with Fluentd](https://docs.fluentd.org/how-to-guides/filter-modify-apache.md)
- [Overview](https://docs.fluentd.org/monitoring-fluentd/overview.md)
- [Plugin Helper: Timer](https://docs.fluentd.org/plugin-helper-overview/api-plugin-helper-timer.md)
- [How to Write Filter Plugin](https://docs.fluentd.org/plugin-development/api-plugin-filter.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.fluentd.org/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.fluentd.org/llms-full.txt) - Full content export

## Tips for requesting documentation

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