> ## 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/0-H-8s7jhz9W-nET/v2/images/screenshots/auth/customcacert.webp?fit=max&auto=format&n=0-H-8s7jhz9W-nET&q=85&s=62002b8dca7d6bf93581cb6d05f933cb" alt="Custom CA Certificate" width="2684" height="1210" data-path="v2/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/0-H-8s7jhz9W-nET/v2/images/screenshots/auth/clientcerts.webp?fit=max&auto=format&n=0-H-8s7jhz9W-nET&q=85&s=ba630408cbc2c22b94814aa9c5af15a9" alt="Client Certificate" width="2684" height="1278" data-path="v2/images/screenshots/auth/clientcerts.webp" />