Document signing, reimagined
BuiltSign was founded on a simple belief: signing documents shouldn't be complicated. We're building a platform that handles any document quickly and securely, without the friction.
Our Story
BuiltSign started in 2026 when we experienced firsthand the frustration of signing large business documents. Existing tools were slow, clunky, and couldn't handle files larger than a few megabytes.
We set out to build something better. A platform that could handle 800-page contracts as easily as a single-page NDA. Fast, secure, and a pleasure to use.
Today, BuiltSign is used by businesses of all sizes, from solo entrepreneurs to growing teams. There's a lot more to come.
Our Mission
Business agreements shouldn't stall because of slow software. We make document signing as fast and accessible as possible, without cutting corners on security.
Whether you're sending your first contract or processing hundreds of agreements a month, BuiltSign just works. Fast, verifiable, and GDPR-compliant.
BuiltSign is a registered trade name of Crul.Dev, registered at the Dutch Chamber of Commerce (KVK 97533114). We build software that meets the highest standards of privacy and security expected by European businesses and beyond.
1GB+
Max file size
Bank-grade
Security
Legally binding
In the EU
Legally binding
In the US
Our Values
These principles apply to everything, from which features we build to how we handle support questions.
Security First
Your documents contain sensitive information. That's why we use AES-256 encryption at rest and TLS 1.3 in transit.
Speed Matters
Large documents process just as fast as small ones. No waiting, no timeouts.
User Focused
Every feature is meant to make something specific easier, not harder.
Globally Compliant
Signatures made through BuiltSign are legally binding under eIDAS in Europe and the E-SIGN Act in the US.
Customer Success
We offer fast support and take feedback seriously. If something isn't working, we fix it.
Built for Scale
Whether you sign 10 documents or 10,000, the infrastructure keeps up.
Ready to get started?
Try BuiltSign free for 7 days. No credit card required.