# Page blocks

> For the complete documentation index, see [llms.txt](https://doc.ibexa.co/en/saas/llms.txt).

Use blocks to customize the content of a Page with dynamic content.

Cohesivo ships with a number of page blocks. For a list of all page blocks that are available out-of-the-box, see [Page block reference](https://doc.ibexa.co/projects/userguide/en/saas/content_management/block_reference/) in the user documentation.

## Block overrides

You can change the name, category, icon, or availability of a block type.

1. In the left panel, go to **Administration** -> **SiteAccess Configuration**.
2. Choose the SiteAccess that you want to override the block type for. Choosing none or admin has no effect.
3. In **Available configurations** list, click **Page Builder Overrides**.
4. In **Edit configuration** section, under **Block overrides**, click **Add** to add a block type override.
5. Expand the **Block identifier** drop-down list and select a block that you want to override.
6. Define the override details and click **Save** to apply your changes.
7. To add more overrides, click **Add** again.
8. To remove an existing override, repeat the steps to display a list of defined overrides and click the trash icon at the end of a row.

![Screenshot of tag block made unavailable](https://doc.ibexa.co/en/saas/content_management/img/block_overrides.png "Code block type (tag) made unavailable")