Products / Prygenix Sign
Prygenix Sign · for Windows

Your signature and company seal, on any PDF

Sign quotations, purchase orders, agreements and letters in seconds — with your company seal, and optionally your Class 3 DSC. Everything happens on your own computer: documents are never uploaded anywhere.

Windows 10 / 11Works offlineDocuments stay on your PC
For Acme Interiors Pvt Ltd ACME INTERIORS PVT LTD AUTHORISED SIGNATORY Asha Rao · Director Date: 14-10-2026 · Mumbai ✓ DSC signed Signed electronically · PGX-20261014-4F2A9C · 14-10-2026
0documents uploaded: signing happens on your PC
DSCClass 3 USB token signing built in, with timestamp
₹999per computer per year (+ GST)
14day trial, every feature
Features

Everything a small office needs to sign paperwork

No more printing, stamping and scanning back. Prepare the seal once, then sign each document in a minute.

Company seal, your way

Upload a scan or photo of your seal: the paper background is removed and the ink cleaned up automatically. No scan? Create a round seal with your company name and city.

Signature and initials

Draw with a mouse or pen, type in a handwriting style, or upload a scan. Keep a second signatory or a "Received" stamp too.

Drag, drop, done

Open a PDF, click to place, drag and resize. Quick layouts put a sign-and-seal block on the last page, initials or the seal on every page, or a half-seal across the page edges.

Certified DSC signature

Optionally add a PAdES digital signature with your Class 3 DSC USB token and a trusted timestamp. Acrobat shows it as signed and flags any later change.

Signing certificate page

Add a closing page with who signed, when (India time by default), the document ID and the SHA-256 fingerprint of the original file. Optionally print the ID on every page.

Register and Verify

Every signed PDF is logged. Drop in a copy someone sends back and Prygenix Sign tells you whether it is exactly the file you signed. Export the register to Excel (CSV).

How it works

Three steps

Set up once

Add your company seal, signature and initials, plus your name, designation, company and place. They are stored on this PC, encrypted for your Windows account.

Place on the PDF

Open the document, click the seal and signature to place them, drag them where they belong — or use a quick layout for every page.

Save and send

Save the signed PDF, optionally with your DSC and a certificate page. The register keeps a record of what you signed and when.

Digital signature (DSC)

Certified signing with your USB token

Plug in your Class 3 DSC token (ePass, ProxKey, mToken and other tokens whose driver puts the certificate in Windows), tick "Also sign with my DSC", choose the certificate and enter the token PIN.

What you get

A PAdES digital signature (SHA-256) with your certificate chain and an optional trusted timestamp. Adobe Acrobat lists it in the Signatures panel and warns if anyone edits the file afterwards.

Visual + certified

The seal and handwritten signature are what people see; the DSC is what proves it. Use both for tenders, contracts and documents your clients verify, or just the seal for everyday paperwork.

Pricing

One small yearly price

Every feature, including DSC signing. One key works on one computer at a time.

Free trial

14 days, every feature

  • Download and install
  • No key or card needed
  • Your seal and signatures carry over when you buy
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Teams

Several computers, one invoice

  • One key per computer
  • Renewals handled together
  • Volume pricing for 5+ computers
Ask for a quote
FAQ

Questions we hear often

Are my documents uploaded anywhere?

No. PDFs are opened, signed and saved on your computer. The app only goes online to activate and check your licence, and, if you tick "Trusted timestamp", to send a fingerprint of the signature (not the document) to DigiCert's timestamp service.

Is a signature with a seal legally valid?

Electronic records and signatures are recognised under India's Information Technology Act, 2000, and a signed PDF with your seal is widely used for quotations, purchase orders, NDAs and service agreements. Where a certified signature is required (for example many tenders and government filings), add your Class 3 DSC. Some documents, such as wills, powers of attorney and property transfers, cannot be signed electronically. When in doubt, ask your legal adviser.

Which DSC tokens work?

Any signing certificate that appears in Windows (certmgr.msc → Personal → Certificates) once the token's driver is installed, for example ePass2003, ProxKey, mToken and Watchdata tokens from the licensed certifying authorities.

What happens when the licence year ends?

You can still open the app, view your register and verify documents. Saving new signed documents needs a renewed licence; your seal, signatures and register are kept.

Can I move it to a new computer?

Yes. Click Licence → Deactivate on the old computer (or uninstall it), then activate the same key on the new one. Use Seal & signatures → Export backup to take your seal and register along.

Does it work on Mac or phone?

Prygenix Sign is a Windows app (Windows 10 and 11). A web version is planned.

Windows says "Windows protected your PC". Is the setup safe?

Yes. Windows shows this for new downloads it hasn't seen often. Click More info, check the app name is Prygenix Sign Setup, then click Run anyway.

Try Prygenix Sign free for 14 days

Download the installer (about 50 MB), install it for your Windows user (no administrator rights needed) and sign your first document.