Sourcerer — source management for journalists Firefox

Sourcerer — source management for journalists

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

Features & Capabilities

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.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Tom Cardoso
Daily users:
-
Version:
1.1.2 Last updated: 2026-07-20
Version code:
6365785
Creation date:
2026-05-13
Risk:
Low risk impact High risk likelihood
Permissions:
Host permissions:
  • http://127.0.0.1:27371/*
Size:
113.21KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-28
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Tom Cardoso
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/sourcerer-for-journalists/
Website:
http://github.com/tomcardoso/sourcerer/issues/

Permission Change History

2026-07-21: Version 1.1.1 → 1.1.2
Remove Permissions: tabs

Is Sourcerer — source management for journalists Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Sourcerer — source management for journalists requires very minimum permissions.

Risk impact analysis details
  • Low Request access to the following domains: 0.1
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Sourcerer — source management for journalists is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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