
Japan's leading cloud-based electronic signature and contract management service
CloudSign is a cloud-based electronic signature and contract management platform developed by Bengo4.com, Inc. It was Japan's first eSignature service certified under the Electronic Signature Law and holds the largest domestic market share for digital contract services, used by over 100,000 companies and 300+ local governments. CloudSign lets teams create, send, sign, and manage legally valid electronic contracts entirely online, eliminating paper, stamps, and postage.
Send documents for legally valid electronic signatures with embedded timestamps, certified under Japan's Electronic Signature Law.
Centralized dashboard to track, store, and search signed documents with detailed audit histories.
Create reusable document templates and send contracts in bulk to multiple recipients at once.
AI-powered organization and management of contracts both when sending and when importing existing documents.
Conclude contracts in English and Chinese in addition to Japanese.
REST API and integrations with core business systems for automated contract workflows.
High-assurance signer authentication including My Number Card (Japanese ID) signing.
Replace paper contracts, stamps, and postage with legally valid electronic signatures concluded entirely online.
Adopted by 300+ Japanese local governments for secure, compliant digital document workflows.
Store, search, and audit signed contracts in a centralized, AI-assisted management dashboard.
Send contracts in bulk using templates for HR onboarding, vendor agreements, and recurring paperwork.
ISO 27001-certified security, single sign-on, IP address restrictions, approval permissions, and audit logs with data stored in Japanese data centers.

All-in-one service management solution for field service and managed print