Developer-First Certificate Generation Platform

Generate Certificates Through the Cloud or Completely Locally.

CertJS provides a REST API, web dashboard, and JavaScript SDK for generating, verifying, and automating certificate workflows.

Explore the REST API, SDK guides, authentication, and endpoint references.

Upload templates, manage certificates, monitor jobs, and create API Keys.

Create template configuration locally without storing anything on the CertJS servers.

Choose Your Workflow

Use the hosted dashboard for managed templates or generate a local configuration for complete ownership.

Dashboard Workflow

Best for teams managing templates and issuing certificates through the CertJS cloud.

Upload Certificate

Edit Placeholders

Save Template

Generate Template ID

Issue Certificates via API

Local SDK Workflow

Ideal for privacy-focused projects where templates never leave your environment.

Upload Certificate

Edit Placeholders

Download certjs.config.json

Commit to Repository

Generate Certificates Locally

Everything required to build automated certificate workflows.

Generate and manage certificate batches through a simple HTTP API.

Visually design templates with drag-and-drop placeholder editing.

Verify generated certificates using secure verification tokens.

Generate thousands of certificates asynchronously using background jobs.

Generate certificates directly inside your application without using the hosted dashboard.

Choose between cloud-managed templates and local configuration files.

Explore the high-level system architecture, including the API, worker pipeline, storage, verification, and SDK.

CertJS is actively evolving. Contributions, issue reports, feature requests, and discussions are always welcome.