# wp-config.org

> Free WordPress and server tools.

## WordPress

- [wp-config.php](https://wp-config.org/wp-config): Build database, security and WordPress settings.
- [Child themes](https://wp-config.org/child-theme): Prepare a child theme for your customisations.
- [Plugins](https://wp-config.org/plugin): Create a starter plugin with a settings page.
- [WP-CLI commands](https://wp-config.org/wp-cli): Build installation and maintenance commands.
- [Schema markup](https://wp-config.org/schema): Describe your pages and entities with JSON-LD.
- [robots.txt](https://wp-config.org/robots): Write crawler rules and test URL access.
- [Theme and plugin checker](https://wp-config.org/checker): Inspect public theme and plugin signals.

## Server configuration

- [Nginx](https://wp-config.org/nginx): Prepare routing, HTTPS and cache configuration.
- [MariaDB](https://wp-config.org/mariadb): Plan database memory and connection settings.
- [Redis](https://wp-config.org/redis): Prepare WordPress object cache configuration.
- [PHP extensions](https://wp-config.org/php): Choose PHP extensions and runtime settings.
- [Cron jobs](https://wp-config.org/cron): Build schedules and preview upcoming runs.
- [Linux commands](https://wp-config.org/linux-commands): Search explained Linux commands and copy examples.
- [Error code guide](https://wp-config.org/error-codes): Understand website, server and Cloudflare errors.
- [Redirects](https://wp-config.org/redirects): Map addresses and test your redirect rules.
- [Compare configurations](https://wp-config.org/config-diff): Compare two configurations in your browser.

## Website and domain checks

- [HTTP headers](https://wp-config.org/headers): Inspect HTTP response headers and redirects.
- [HTTP/2 test](https://wp-config.org/http2): Verify the negotiated HTTP/2 protocol.
- [HTTP/3 test](https://wp-config.org/http3): Check HTTP/3 negotiation and h3 advertisements.
- [Brotli compression](https://wp-config.org/brotli): Check br content encoding on a public resource.
- [HSTS checker](https://wp-config.org/hsts): Explain HSTS max-age and host name policy.
- [DNS lookup](https://wp-config.org/dns): Review DNS records and email policies.
- [WHOIS lookup](https://wp-config.org/whois): Read public domain registration records.
- [Who is hosting?](https://wp-config.org/hosting): Identify the visible hosting network.
- [What is my IP?](https://wp-config.org/my-ip): Find and copy your connection IP address.