Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Sourcerer — source management for journalists

Sourcerer — source management for journalists by Tom Cardoso

Capture full-page screenshots, save selected text as contact fields, and add new contacts to Sourcerer — the encrypted source management app for journalists.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Sourcerer is an encrypted desktop app for journalists and researchers to manage sources, track outreach, and stay organized. This extension connects your browser directly to Sourcerer, letting you capture information from the web without breaking your flow.

What you can do:

Full-page screenshots — capture an entire page, including content below the fold. The extension scrolls and stitches automatically. Screenshots are stored encrypted in Sourcerer alongside the contact they're attached to.

Save selected text — highlight an email address, phone number, or note on any page, open the extension, and save it directly to a contact's record. No copying and pasting between tabs.

Add new contacts — create a contact from scratch without leaving your browser. Name, organization, email, and phone — ready to go the moment you find a new source.

Right-click menu — select text on any page, right-click, and choose Save to Sourcerer. Save it as an email, phone number, or note, or start a new contact with the selection pre-filled.

Privacy and security:

The extension only communicates with the Sourcerer desktop app running on your own machine (127.0.0.1:27371). No data is sent to any external server. All screenshots, contacts, and saved fields go directly into your local encrypted database. The extension has no access to your browsing history and cannot read pages you haven't explicitly triggered it on.

A session token issued by the desktop app authenticates every request. The token is stored in session storage only and is cleared when you close your browser.

Requirements:

Sourcerer for macOS or Windows must be installed and running. The extension will not function without it. Sourcerer is free and open source (AGPL-3.0), available at github.com/tomcardoso/sourcerer.
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

Optional permissions:

  • Access your data for 127.0.0.1:27371

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Copy add-on ID
Version
1.1.1
Size
113 KB
Last updated
3 days ago (May 16, 2026)
Related Categories
  • Privacy & Security
  • Search Tools
  • Social & Communication
License
GNU Affero General Public License v3.0 only
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.