ENFRESAR
FIREFOX AUTOCONFIG TOOLKIT

Everything you need for
Mozilla CFG files.

Five focused utilities to decode, encode, edit, inspect and generate Firefox AutoConfig files. Choose a tool and get to work right away.

5 free toolsBrowser-focused workflowsNo account required
THE TOOLKIT / 01

Choose your tool

Designed for practical Firefox configuration tasks, from a quick decode to a complete AutoConfig setup.

05 / 05
MOST POPULAR
Decode & inspect

Mozilla CFG Decoder

Decode byte-shift 13 Firefox mozilla.cfg files, or work with plain-text configuration.

Open tool
Encode & export

Mozilla CFG Encoder

Apply byte shift +13 or export plain-text Mozilla AutoConfig files.

Open tool
Edit configuration

Online CFG Editor

Open and edit your configuration script with a focused browser-based workspace.

Open tool
Check structure

CFG Validator

Run preliminary checks for common structural issues before testing in Firefox.

Open tool
Create setup

Firefox AutoConfig Generator

Create a starter mozilla.cfg and its matching autoconfig.js loader.

Open tool
RESOURCES / 02

Learn the essentials

Clear documentation for setting up Firefox AutoConfig and understanding preference behavior.

01How to Set Up Firefox AutoConfig02How to Decode a Mozilla CFG File03Firefox lockPref vs defaultPref

Ready to work with a CFG file?

Start with the Mozilla CFG Decoder or browse the full toolkit.

Open CFG Decoder