by Adobe Acrobat Friends who need it can learn more about how Acrobat exports digital certificates.
Step 1: First open Adobe Acrobat software, click Edit - Preferences, and select Signature.
Step 2: Click More to open the interface shown below. You can see the added certificate and delete it in the upper right corner.
Step 3: You can export the certificate, click the export option above.
Step 4: Select the option below to save the data to a file and click Next.
Step 5: Click Save Type to choose different file formats.
Step 6: Click Save, you will see a successful save prompt, complete.
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