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SECURE
See the digital signatures in a PDF: who signed it, when, and with which certificate.
QUICK ANSWER
To verify a PDF signature, add the signed PDF and choose Create signature report. StackPDF lists each signature field with its signer, date and certificate details. It doesn’t decide whether you should trust the signer, so check that the certificate comes from someone you expect. It runs in your browser, so your file isn’t uploaded.
Updated 31 October 2026 · Written by the StackPDF teamUpdated 31 October 2026 · StackPDF team
Its signatures will be listed in a report. It stays in this browser.Its signatures will be listed in a report. It stays in this browser.
PDF files · Runs in your browser
QUICK ANSWER
To verify a PDF signature, add the signed PDF and choose Create signature report. StackPDF lists each signature field with its signer, date and certificate details. It doesn’t decide whether you should trust the signer, so check that the certificate comes from someone you expect. It runs in your browser, so your file isn’t uploaded.
Updated 31 October 2026 · Written by the StackPDF teamUpdated 31 October 2026 · StackPDF team
HOW TO
Drop it here, or choose it from your computer, your phone or My files.
StackPDF lists every signature field, with its signer, date and certificate.
Download it as a .txt file, or copy it to send to someone.
GOOD TO KNOW
It describes the signatures. Deciding whether to trust them is up to you.
| IN THE REPORT | WHAT IT MEANS | CHECK THAT |
|---|---|---|
| Signer | The name on the certificate | It’s the person or company you expect |
| Signed on | When the signature was made | It fits the document’s timeline |
| Issued by | Who issued the certificate | It’s an authority you trust |
| Reason and location | What the signer typed | It matches what you agreed |
This lists signature fields and certificate details. It does not check whether you should trust the signer.
PRIVACY
Yes. Verify PDF signatures runs in your browser, so the file never leaves your device.
StackPDF opens the PDF in your browser tab and does the work there.
Close the tab and it’s gone. Free results download to your device. Premium can also keep them in My files.
pdf-lib, PDF.js and qpdf do the work, inside your browser.
FAQ
Add the PDF and create the signature report. It lists every signature field, or says No signature fields found.
Yes. The free plan includes 1 PDF export a day, with no account. Premium removes the daily limit for $5.99 a month or $39.99 a year.
No. The signatures are read in your browser, so the PDF stays on your device.
No. It shows who the certificate names and when the file was signed. Whether to trust that certificate is up to you.
A drawn or typed signature is a picture on the page, not a digital signature, so there’s no certificate to check.
Use Sign PDF to draw, type or upload your signature, or Digitally sign a PDF to sign with a certificate.