# Customization

- [What’s the recommended page cover image size?](/url/gitbook.com/docs/help-center/published-documentation/customization/whats-the-recommended-page-cover-image-size.md)
- [How do I change or replace the favicon for my docs site?](/url/gitbook.com/docs/help-center/published-documentation/customization/how-do-i-change-or-replace-the-favicon-for-my-docs-site.md)
- [Can I edit HTML, CSS, JS, or other custom code on GitBook?](/url/gitbook.com/docs/help-center/published-documentation/customization/can-i-edit-html-css-js-or-other-custom-code-on-gitbook.md)
- [Can I "Powered by GitBook" on a paid plan?](/url/gitbook.com/docs/help-center/published-documentation/customization/if-i-subscribe-to-a-paid-plan-can-i-remove-the-powered-by-gitbook-badge.md)