Extract signatures and sign PDFs offline. Your files never leave your computer.

SignKit is a privacy-first desktop app that captures signatures from documents, builds your signature library, and signs PDFs—all without cloud upload or monthly fees.

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100% offline - your PDFs and signatures stay on your device.
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$29 one-time purchase. No subscriptions. No monthly fees.
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Extract signatures from documents and reuse across PDFs.

Get SignKit for $29 ↗ View product details

Available for:

🍎 macOS 🪟 Windows 🐧 Linux

One-time payment. Own it forever. Your data never touches our servers.

Live preview

Signature extraction in SignKit

Upload a photo of your signature, adjust the threshold, and export a clean transparent version in seconds.

Purchase is handled securely via Gumroad. Downloads and updates are managed through your Gumroad account.

See SignKit in action

Frequently Asked Questions

What platforms does SignKit support?

SignKit runs on macOS (Intel and ARM64), Windows, and Linux. Download the version for your platform from Gumroad after purchase.

Is there a subscription or is it really one time?

It is truly one time payment. $29 and you own it forever, with future minor updates included. No recurring charges.

Does it work completely offline?

Yes. SignKit is a desktop app that runs 100 percent offline. Your PDFs and signatures never leave your machine. No internet connection is required after installation.

What if I need a refund?

All purchases are processed through Gumroad which offers buyer protection. Contact support@signkit.work if you have any issues.

What users are saying

Coming soon. Early customer quotes and case studies will be added here.

SignKit

Built with care for professionals who need precision and privacy in signature extraction.