Sign PDF
Sign yourself or request electronic signatures from others.
Who will sign this document?
Sign a PDF or send for signature
Add your signature to any PDF, or email a signature request to someone else.
The Sign PDF tool has two modes. In 'Sign myself' mode you drag your saved signature image onto the PDF at the position you want and download the signed file. In 'Send for signature' mode you email a link to another person, who signs the document in their browser without needing an account — PDF Hub then stores the completed PDF and an audit trail (sent → viewed → signed events).
The audit trail records who signed, when, and from what IP — this is useful evidence, though not a replacement for a certified digital-signature workflow when one is required.
How to use it
- 1Upload the PDF.
- 2Choose 'Sign myself' or 'Send for signature'.
- 3In 'Sign myself': drop your signature image, drag it into place on the page, download the signed PDF.
- 4In 'Send for signature': type the recipient's email and an optional message, press Send. The recipient gets an email with a link.
- 5Track the request from the Signatures dashboard.
Real-world use cases
- Sign a contract you received by email without printing and scanning.
- Send a purchase order to a vendor for their signature.
- Collect approval signatures from multiple stakeholders one by one.
- Add a witness signature to a scanned agreement.
Supported formats & limits
Input: PDF + PNG/JPG signature image. Signature request PDFs are limited to 8 MB. Signature-image size is capped at 2 MB.
Privacy
Signature requests store the original and signed PDFs in our database until you delete them, or until the expiry date you set passes (default 14 days, maximum 60). The full audit trail is visible on your Signatures dashboard.
Full details in the Privacy Policy.
Frequently asked questions
Is this a legally binding signature?▾
PDF Hub produces electronic signatures. Whether a specific electronic signature is legally binding depends on the jurisdiction and the type of document. Read our Disclaimer for details, and consult a lawyer for high-stakes documents.
How is this different from a digital signature (DSC)?▾
A digital signature (issued by a Certifying Authority like eMudhra or SafeScrypt in India) uses a cryptographic key tied to your verified identity. PDF Hub produces a simple electronic signature — an image of your signature plus an audit trail. For government filings that require a DSC, use a certified provider.
What happens if the recipient declines?▾
The document status changes to 'declined' with the reason (if the recipient provided one). Both sides see the outcome in the audit trail.
Can I revoke a signature request after sending?▾
Yes — open the Signatures dashboard and delete the request. The public link stops working immediately.
Is a signature made in Sign PDF legally valid?▾
In many jurisdictions (US ESIGN Act, EU eIDAS 'simple electronic signature', India IT Act) it's valid for ordinary agreements when the intent to sign is clear and there's an audit trail — which Sign PDF provides. For high-stakes documents (real estate, wills, some government filings), check your local law and consider a certified digital signature provider.
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