> For the complete documentation index, see [llms.txt](https://docs.opencart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.opencart.com/developer-guide.md).

# Developer Guide

- [Coding Standard](https://docs.opencart.com/developer-guide/coding-standard.md)
- [Database Schema](https://docs.opencart.com/developer-guide/database-schema.md)
- [Extensions](https://docs.opencart.com/developer-guide/extensions.md)
- [Events](https://docs.opencart.com/developer-guide/events.md)
- [Startups](https://docs.opencart.com/developer-guide/startups.md)
- [Tasks](https://docs.opencart.com/developer-guide/tasks.md)
- [Cron Jobs](https://docs.opencart.com/developer-guide/cron-jobs.md)