> ## Documentation Index
> Fetch the complete documentation index at: https://bruno-a6972042-docs-api-docs-split-more-menu-ryan.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Adding and managing certificates

Bruno supports adding custom Client Authorization (CA) and client certificates to your requests if required by the API you are working with.

### Adding a custom CA certificate

Navigate to the `Preferences` menu in Bruno and select `Use Custom CA Certificate`, then upload the selected file.

<img src="https://mintcdn.com/bruno-a6972042-docs-api-docs-split-more-menu-ryan/NBjyjzt_-oPyH1Dx/images/screenshots/auth/customcacert.webp?fit=max&auto=format&n=NBjyjzt_-oPyH1Dx&q=85&s=963f87d08392d1733f34a3a380429738" alt="Custom CA Certificate" width="2468" height="1310" data-path="images/screenshots/auth/customcacert.webp" />

### Adding client certificates to Collections

You can add and manage client certificate(s) on any Collection by going to the `Collection Settings` menu and selecting `Client Certificates`.

Simply enter the domain, designate the type of certificate, and then upload the relevant file(s).

<img src="https://mintcdn.com/bruno-a6972042-docs-api-docs-split-more-menu-ryan/NBjyjzt_-oPyH1Dx/images/screenshots/auth/clientcerts.webp?fit=max&auto=format&n=NBjyjzt_-oPyH1Dx&q=85&s=cdabff7dd59d8b8dbcb156306f4bad4e" alt="Client Certificate" width="2468" height="1310" data-path="images/screenshots/auth/clientcerts.webp" />