Firefox Browser Add-ons
Log in
Preview of ArchivioMD Verifier

ArchivioMD Verifier by Mountain View Provisions LLC

Automatically detects and cryptographically verifies content integrity on sites using the ArchivioMD WordPress plugin confirming hashes, signatures, and timestamps.

0 (0 reviews)0 (0 reviews)
Download Firefox
Download file

Extension Metadata

Screenshots
Verification Screen and UI
About this extension
Verifies that web content hasn't been silently altered since publication. Works on any site running the ArchivioMD WordPress plugin checking SHA-256 hashes, Ed25519 signatures, Rekor transparency logs, and RFC 3161 timestamps automatically on every page you visit.
Developer comments
This extension uses Manifest V3 with a background scripts fallback for Firefox compatibility. All JavaScript is bundled within the package — no remote code is loaded or executed at runtime.
The extension runs a content script on all URLs to passively detect whether a page uses the ArchivioMD WordPress plugin, which can be installed on any website. When detected, it fetches publicly available verification data (content hashes, digital signatures, and anchoring metadata) directly from the site's own REST endpoint and .well-known paths. All external network requests go only to the site currently being visited, plus optionally to rekor.sigstore.dev for transparency log lookups when that feature is explicitly used.
DOM fingerprints and visit history are stored locally using browser.storage.local and never leave the device. No analytics, no tracking, no third-party data sharing of any kind.
The openpgp.min.js library (OpenPGP.js) is bundled locally within the package and is used for cryptographic operations. It is not fetched from any external source.
innerHTML is used in popup.js for UI rendering. All dynamic values are passed through an esc() sanitization function that encodes HTML entities before insertion, preventing XSS.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
Version
1.0.0
Size
255.55 KB
Last updated
6 days ago (Mar 11, 2026)
Related Categories
  • Feeds, News & Blogging
  • Web Development
  • Privacy & Security
License
GNU General Public License v2.0 only
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.