SuTan Sign Desktop

Offline Signing

Sign documents without an internet connection. Your certificates stay local, your data stays private.

Six Signing Modes

Quick Sign, Template Sign, Bulk Folder, Dynamic Bulk and Automated Bulk Signing, plus ERP Connect for signing from your ERP. See all modes

DSC & PFX Support

Works with all Class 2 and Class 3 DSC tokens as well as PFX certificate files from any CA.

Visual Signature Placement

Drag and drop your signature box anywhere on the page. Preview before you sign.

Automatic Updates

Always on the latest version via the Microsoft Store. No manual downloads or IT involvement needed.

IT Act 2000 Compliant

All signatures comply with the Information Technology Act 2000 and are legally valid in India.

Quick Sign

Browse a file, draw the signature position and sign quickly with your USB token or PFX.

Best for: one-off letters and forms

Template Sign

Use a saved template, with signature position and signer details, for fast signing of the same layout.

Best for: recurring documents with a fixed layout

Bulk Folder Signing

Select a source and a destination folder, place the box once, and sign every PDF in the folder in one batch.

Best for: batches of similar PDFs

Dynamic Bulk Signing

Configure once and sign thousands of PDFs with dynamic per-page placement: the signature sits next to each page's content, without covering text.

Best for: large folders of PDFs with different layouts

Automated Bulk Signing

Drop PDFs in a folder and they are signed automatically with your PFX certificate, with no clicks.

Best for: hands-free signing of files from another system

ERP Connect (USB Token)

Sign documents sent from your ERP or web app with your own USB token. The signed PDF goes straight back to the ERP.

Best for: ERP approvals that need a named person's signature