Inspect PDF Digital Signatures
Find and inspect signature fields already present in a PDF. Select an entry to view the page and highlight where the signature appears.
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Inspect CA Signatures
📌 How it works:
1️⃣ Open a digitally signed PDF, such as an electronic contract or invoice.
2️⃣ All signature fields are scanned automatically, listing their names, page numbers and appearances.
3️⃣ Select a signature on the left to view its page on the right. A red box marks the signature's location.
⚠️ This module only displays signature-field information. It does not validate certificates.
1️⃣ Open a digitally signed PDF, such as an electronic contract or invoice.
2️⃣ All signature fields are scanned automatically, listing their names, page numbers and appearances.
3️⃣ Select a signature on the left to view its page on the right. A red box marks the signature's location.
⚠️ This module only displays signature-field information. It does not validate certificates.
Click or drop a local PDF
The document must contain digital signatures (CA signatures)
💡 Usage Tips
• Electronic contracts and invoices usually include digital signature fields.
• A red rectangle marks each signature's location for easy checking.
• If no signature is detected, the file may be unsigned or use an unsupported signature format.
• Use a dedicated tool to verify certificate validity and document integrity.
• Electronic contracts and invoices usually include digital signature fields.
• A red rectangle marks each signature's location for easy checking.
• If no signature is detected, the file may be unsigned or use an unsupported signature format.
• Use a dedicated tool to verify certificate validity and document integrity.
This module was added by GitHub user gitca233 . Thank you, gitca233!
How to use this tool
- Open a PDF that contains digital signatures.
- Wait for the signature fields to be listed with their names and page numbers.
- Select a signature to view its page and the red location rectangle.
- Search by name or page number, or use the previous and next signature controls.
Frequently asked questions
Does this tool verify whether a signature is valid?
No. It displays signature-field information and appearance only. Use a dedicated verification tool to check certificate validity and document integrity.
Can I sign a PDF with this tool?
No. It inspects existing signatures and does not create new ones. If no signature is detected, the file may be unsigned or use an unsupported signature format.