Sign PDF (Test Cert)

BETAPremium

Add a real PKCS#7 digital signature to any PDF.

About Sign PDF (Test Cert)

Sign PDF appends a real PKCS#7 detached signature to the document. With a configured production certificate (DSC, eMudhra, Aadhaar e-Sign), signatures validate against trust anchors. Without one, a persistent self-signed identity is used — the signature is cryptographically valid but does not chain to a public root.

Signatures are verifiable in Adobe Acrobat, Foxit, and any PKCS#7-aware reader.

How it works

1
Upload the PDF.
2
Click Sign — the configured certificate is used.
3
Download the signed PDF.

When to use it

Sign contracts with a legally-binding DSC.
Issue signed certificates with a corporate seal.
Sign delivery acknowledgements with a persistent organisational identity.

Privacy

Files are processed by the Evixpdf engine in-house with the AGPL-free MIT stack — no third-party cloud upload. Sessions auto-purge after processing.

Frequently asked questions

Short answers to the questions people most often ask about Sign PDF (Test Cert). Read the one that matches your situation — they're written to be skimmed.

1Will the signature validate in Adobe Reader?

With a production cert chained to a public root: yes, fully. With the default self-signed identity: technically valid, but Reader will display a "Signature not chained to trusted root" warning.

2How do I configure a production certificate?

Set Signing:PfxPath and Signing:PfxPassword in your configuration / Vault. The server will pick it up on next start.

Still stuck?

Browse our hand-written guides or ask us directly — we usually reply within a business day.

Read guides Contact support

Add Password

Lock a PDF with industry-standard AES-256 encryption.

Flatten PDF

Lock form fields and annotations into the page bitmap.

Add Watermark

Stamp a text watermark like CONFIDENTIAL across every page.

Ready when you are

Try Sign PDF (Test Cert) now

No signup, no email required. Drag your file in and you're done in seconds.