Verify PDF Signature
Check the validity of digital signatures and ensure your document hasn’t been tampered with.
Introduction
Our Online PDF Signature Verifier is a critical tool for modern business workflows. Digital signatures are more than just images; they are encrypted data packets that lock the document’s content. If even a single character is changed after signing, the signature becomes invalid. This tool decrypts the signature metadata to tell you if the file you received is the exact same one that was signed.
Features
- Integrity Check (Tamper Detection)
- Signature Field Identification
- Metadata Extraction
- Fast, No-Upload Verification
Benefits
- Confirm Contract Validity
- Avoid Fraudulent Documents
- Professional Compliance
- Absolute Privacy
How to Verify a PDF Signature
- Upload: Choose the PDF that contains a digital signature (e-signature).
- Analyze: Click the “Scan” button to look for digital certificates embedded in the file.
- Review: Check the status. A “Valid” status means the document is original and untampered.
Why Verification is Necessary?
In Legal and Financial Niche, a signature is only as good as its verification. Many scammers send PDFs with “fake” signature images that look real but have no data behind them. Using a Signature Verifier ensures that the certificate comes from a trusted authority and that the document’s “ByteRange” matches its original state.
Limitations
Please note that this tool verifies Digital Signatures (cryptographic). It cannot verify handwritten signatures that have been scanned as images, as those do not contain verifiable digital data.