Works on any device. No software to install.

Sign PDFs online,
right in your browser.

No software to download. No plugins. Upload your PDF, place your signature, and get a legally signed document in under a minute — with cryptographic verification built in.

Sign any PDF in 3 steps

01

Upload your PDF

Drag and drop or click to upload. We support any standard PDF up to 10MB. Your file is encrypted in transit.

02

Place your signature

Type your name with handwriting fonts, draw with a finger or mouse, or use a saved signature. Add date and text fields too.

03

Download signed PDF

Your signature is permanently stamped onto the PDF. Download the signed document and audit certificate with QR verification.

Why sign PDFs online?

Printing, scanning, and mailing documents is slow and wasteful. E-signatures are legally binding, faster, and greener.

Works on any device

Sign from your laptop, tablet, or phone. No app to install — everything runs in your browser.

Legally valid

Compliant with ESIGN Act (USA) and eIDAS (EU). Every signature captures IP, timestamp, and consent.

Type, draw, or upload

Type your name with handwriting fonts, draw with a finger or stylus, or upload an existing signature image — background is automatically extracted.

Self-sign instantly

Sign your own documents without sending an email. Upload, place fields, sign — perfect for adding your signature before forwarding to counterparties.

Saved signatures

Save multiple signatures to your account and reuse them across documents with one click. Your signatures are securely stored and always ready.

Audit certificate

Every signed document comes with a detailed audit trail PDF — timestamps, IPs, user agents, and SHA-256 document hashes.

Document verification

Every signed PDF includes a QR code and ECDSA cryptographic proof. Verify any document at signforge.io/verify.

No account for signers

Send a signing link to anyone. They click, sign, and done. No registration or password required.

Secure document locker

Store signed agreements in a private encrypted vault. Organize by category, search by name, set expiry dates, and download anytime.

Frequently asked questions

Is signing a PDF online legally binding?

Yes. Electronic signatures are legally binding in the US (ESIGN Act), EU (eIDAS), and most other countries. SignForge captures IP address, timestamp, and signer consent for every signature.

Do signers need a SignForge account?

No. Signers receive a secure link. They can review and sign the document without creating an account or downloading any software.

Can I sign my own documents without emailing them?

Yes. Use the self-sign feature to upload a PDF, place your signature fields, and sign immediately. No email link required — useful for adding your signature before forwarding to counterparties.

Can I save my signature for reuse?

Yes. Save multiple signatures to your account — type with handwriting fonts, draw, or upload a signature image. Reuse any saved signature with one click across all your documents.

How are signed documents verified?

Every signed document includes a QR code and ECDSA P-256 cryptographic proof. Anyone can verify authenticity at signforge.io/verify by scanning the QR or uploading the PDF.

Where can I store my signed documents?

SignForge includes a Document Locker — a private encrypted vault. Store signed agreements, organize by category, search by name, set expiry dates, and download anytime.

Is it really free?

Yes. SignForge is free for professionals, teams, and businesses. No trials, no per-document fees, no credit card required. All features included.

Stop printing. Start signing.

Sign PDFs, verify documents, and store agreements securely — all in one free platform. No subscriptions, no per-document fees.

Sign your first PDF

Free forever. No credit card required.