signature not verified pdf
PDF Signature Not Verified: Meaning And Fix
A full explanation of signature not verified messages and the honest way to create a green tick copy after validation.What the warning means
PDF signature not verified means the viewer could not confirm the digital signature status. It does not automatically tell you whether the document is valid, invalid, or simply not trusted by that viewer.
The warning deserves attention because both harmless trust-setting issues and real tampering problems can produce confusing signature messages.
Why local viewers disagree
Different PDF viewers use different trust stores and validation features. One app may show a question mark while another can complete the trust chain and show a valid status.
This is why people often see signature not verified on Aadhaar, GST, Udyam, and government certificates even when the PDF came from a legitimate source.
The fix is validation, not decoration
The unsafe fix is to paste a green tick onto the page. That only changes the appearance and does not prove the digital signature is valid.
The safe fix is to validate the original signed PDF. GreenTick PDF creates a green tick print copy only when the validation result supports it.
What to upload
Upload the original signed PDF. Do not upload images, scans, screenshots, or files that were edited after download. Those versions may not contain a verifiable signature.
If the document is protected with a password, unlock it inside the flow so the verifier can inspect the signed content and return a clear result.
What a successful result gives you
A successful result gives you a print-ready PDF with visible signature-valid details. This is useful when someone needs a paper copy with the validity state visible.
It does not create a new digital signature. The original signed PDF remains the document to preserve for digital verification.
When the right fix is a fresh download
If validation fails, use the issuing portal or original source to download a fresh copy. Many failures happen because the file was modified or saved incorrectly after signing.
If the fresh copy still fails, the format or certificate may be unsupported. The honest result is to show the failure rather than pretend the document is valid.
Questions
Is signature not verified always bad?
No. It can be a local viewer trust issue, but the file should be validated before printing or submission.
Can GreenTick PDF fix every not verified PDF?
No. It generates output only for supported PDFs that pass verification.