Welcome to DocuNinja ~ e-signatures, built for the way you work.
At Invoice Ninja, our #1 goal is to create products that help freelancers and small businesses streamline their financial workflow. While businesses could easily send invoices and receive payments, we noticed a significant gap—the process of managing contracts and agreements remained a major hurdle.
Clients had to print, sign, scan, and email documents back, causing delays and unnecessary friction. Even existing e-signature tools posed challenges—they were difficult to integrate into invoicing workflows and often came with high costs. This cumbersome process slowed down deals and created inefficiencies for businesses.
With every dollar, every invoice, every task accounted for,
you and your clients will always know where business stands.
Recognizing this opportunity, we set out to bridge the gap between invoicing, payments, and secure digital document signing. Our goal was to create a solution that seamlessly integrates with businesses’ existing workflows—making contract management faster, easier, and more affordable. And that’s when DocuNinja was born.
Built with the trusted ethos of Invoice Ninja, DocuNinja delivers a simple, secure, and integrated e-signature experience. Sign documents faster, streamline collaboration, and close deals without manual hassle.
With DocuNinja, signing is seamless—whether finalizing client agreements, approving internal documents, or collecting legal signatures. The process is effortless, secure, and cost-effective.
Designed for individuals, small teams, and enterprises of any size.
A secure, user-friendly platform that works wherever you are.
200,000+ businesses rely on Docu Ninja
DocuNinja.co is an online platform that simplifies document signing, management, and collaboration, making it easy for individuals and businesses to handle documents securely and efficiently.
Managing paperwork isn’t exactly the most exciting part of running a business—but it’s essential.
DocuNinja takes the hassle out of signing workflows, helping you avoid printing, scanning, or long email chains. You can send documents digitally from any device, add your branding, and let recipients sign wherever they are.
Best of all, DocuNinja keeps things simple: transparent pricing with no hidden catches or limits on how many signatures you can request. We offer templates, easy customization, and automated reminders—so you can stay focused on growing your business instead of chasing paperwork.
Yes! The Free Plan includes 1-document per month:
However if you upgrade to our Pro Plan for $12/month, you receive unlimited documents!
We support PDF, DOCX, XLSX, JPEG, and PNG formats—up to 100MB each!
Yes, we prioritize security with encryption and secure servers to protect your confidential information and documents.
Yes! Learn how DocuNinja aligns with international regulations and standards such as GDPR, eIDAS (Qualified Electronic Signatures), SOC 2, HIPAA, UETA, and the ESIGN Act to protect your data and digital transactions.
