# Deepstamp - Document Certification

> Certify and verify documents with one click. Right-click any file to certify with Deepstamp.

Canonical page: [https://chrome-stats.com/d/deepstamp-certify](https://chrome-stats.com/d/deepstamp-certify)

## Overview

- **ID:** `deepstamp-certify`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** DeepStamp
- **Category:** download-management,privacy-security,social-communication
- **Version:** 1.0.0
- **Last updated:** 2026-01-18
- **First published:** 2026-01-15
- **Size:** 28 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/deepstamp-certify/)
- **Website:** [https://deepstamp.fr](https://deepstamp.fr/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/deepstamp-certify/privacy/](https://addons.mozilla.org/firefox/addon/deepstamp-certify/privacy/)

## Description

Deepstamp allows you to certify and verify the authenticity of your digital documents directly from your browser.

Features

• <strong>One-click certification</strong> : Right-click any file to certify it instantly
• <strong>Instant verification</strong> : Verify the authenticity of your documents in seconds
• <strong>Secure storage</strong> : Your API key is stored locally in the browser
• <strong>Intuitive interface</strong> : Simple and easy-to-use popup
• <strong>All file types</strong> : PDF, images, Office documents, etc.

Usage
<ol><li>Configure your Deepstamp API key in the extension settings</li><li>Right-click any downloaded file</li><li>Choose "Certify with Deepstamp" or "Verify with Deepstamp"</li><li>The certificate is generated instantly with cryptographic proof</li></ol>
Security

Certification uses ED25519 cryptography to guarantee the integrity and traceability of your documents. Certificates are publicly verifiable on <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f92be66d75f5d2c440bb9ca29d9fd4b82981e5c7acd8e7df8a2c5f7b0fe1e8be/http%3A//deepstamp.fr" rel="nofollow">deepstamp.fr</a> without requiring an account.

Support

For any questions or assistance, visit <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/182808ea6227aee7ff7bc26cfe71c8d192b22e33949ac207114e41c61c73245d/https%3A//deepstamp.fr" rel="nofollow">https://deepstamp.fr</a>

## Rankings

- #139,547 — Overall
- #95 — documentation
- #134 — document

## Permissions and access

### Permissions

- `contextMenus`
- `storage`
- `downloads`
- `activeTab`

### Host permissions

- `https://deepstamp.fr/*`
- `https://*.deepstamp.fr/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/deepstamp-certify)