How to Export Certificate Public Key from Chrome

Open Google Chrome. Open the menu at the top right corner and select "Settings"

Select Show Advanced Settings > Manage Certificates

Select the certificate you wanted to export then click "Export" button then next

Now, you will get a "Certificate Export Wizard" box. Just click "Next"

Select "No, do not export the private key" then click next

Select "DER encoded binary x.509(.cer) then click next

Browse a folder where you wanted to save the file and assign a filename then click "Save"

Click finish to complete the wizard. Now you can locate the file where you saved it.