How to Import Certificates to Flatpak Edge Browser on Linux

How to Import Certificates to Flatpak Edge Browser on Linux

2025-10-30

When using Watt Toolkit, I noticed that the Flatpak version of the Edge browser does not have a “Certificate Management” option. You can only access the “Certificate Manager” via Edge’s internal link: edge://certificate-manager/localcerts.

After research, there are two methods to import certificates into Edge:

  1. Use the Edge internal link to import certificates through a graphical method, which is the same as the standard method.
  2. Copy the certificate to the /etc/pki/ca-trust/source/anchors/ directory.

The /etc/pki/ca-trust/source/anchors/ directory is a core directory for managing system-level trusted root certificates in Fedora/Red Hat-based Linux distributions.

However, this path varies across different Linux distributions. If you are using another Linux distribution, you need to find the corresponding directory.

Steps for Importing Certificates Using Method 2

Copy the Certificate File

Copy the certificate file in PEM or DER format (e.g., my-ca.cer) to the aforementioned directory using the following command:

sudo cp /path/to/my-ca.cer /etc/pki/ca-trust/source/anchors/

Replace the path /path/to/my-ca.cer with the actual location of your certificate file here.

Update the Trust Store

Execute the update-ca-trust command to make the system regenerate the integrated trust store file for use by all applications:

sudo update-ca-trust

Additional Information

When using Method 1 for import, you may encounter an import error. In such cases, you can use Method 2 instead.

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