When using WPS Certificate Signature, the most common questions are about certificate preparation, signature validity, and membership access; this section includes 4 common answers and 4 glossary terms.
FAQ
What does a certificate signature do?
- It helps verify the signer’s identity.
- It helps show whether the document was changed after signing.
- It is suitable for contracts, approval files, and formal archived PDFs.
How can I get a digital certificate?
- You can apply for or purchase a digital certificate from a certificate authority.
- You can also use a certificate provided through your organization’s internal process.
- Keep the certificate and its password secure after you get them.
Can I modify the document after signing?
- If the document content is changed after signing, the signature may become invalid.
- Finish all editing before you sign whenever possible.
- If the file is changed, sign it again.
Why can’t I find the Certificate Signature entry or use it?
- Make sure you opened a PDF file.
- Check that you are on the Protect tab.
- If the feature is still unavailable, confirm that your account has the membership access needed for PDF editing.
Glossary
| Term | Definition |
|---|---|
| Digital certificate | An electronic certificate used to verify the signer’s identity. It is usually used together with a password during signing. |
| Certificate signature | A signing method in a PDF that uses a digital certificate to help confirm identity and document integrity. |
| Recent | A history list under Certificate Signature that lets you reuse a signature you used before. |
| Signature position | The area in the PDF page where the signature is placed by the user. |