Free tools

Sign, verify, and check provenance in minutes

Free tools to sign content, verify provenance, and check your EU AI Act readiness. No account needed to start.

Tools in the toolbox

85+

File and media formats signed and verified

To start, no account

The toolbox

Pick a tool and start

Every tool below runs on the same technology powering our production API.

WordPress Plugin

C2PA content authentication for WordPress. Protect your posts with cryptographic proof of authorship.

Sign & Verify

Sign content with secure metadata or verify authenticity using the Encypher tool.

Verify

Verify signed text and files, and inspect embedded C2PA metadata. Free, no account needed.

EU AI Act Readiness Check

Answer 7 quick questions and get a free one-page EU AI Act Article 50 readiness report (PDF). No signup.

AI Cost & Exposure Report

Scan any newsroom or station URL for marking coverage, crawler-policy signals, and an AI exposure score. No signup.

Chrome Extension

Verify C2PA provenance on any webpage. Free, no account required. Signing requires an Encypher account.

C2PA Workflow Architect

Map your newsroom's chain of trust. Visualize where C2PA manifests are generated, inspected, and redacted across your media supply chain.

One engine

Each tool here calls the same signing and verification engine as our production API, built on the C2PA text standard Encypher authored.

1
One open standard
Built on the C2PA standard for unstructured text, which Encypher authored; the text standard published January 8, 2026.
2
One production engine
Every tool signs and verifies with the same engine behind api.encypher.com. Each demo page states its own file size and format limits.
3
Free public verification
Anyone can verify signed content for free, with no account and no API key.

Related glossary terms

Scan any newsroom or station URL for a conservative, clearly-labeled AI exposure posture. No signup, no inflated numbers.