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Tools & Services

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Proxy Providers

Camoufox is intended to be used with rotating proxies (preferably residential IPs). Check out these providers:

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	MangoProxy is a Residential, ISP, Mobile and Datacenter proxy service designed for professional tasks where stability, speed, and anonymity matter. Use code DAIJRO for 8% OFF ISP Static Proxies
	Proxidize | Mobile and Residential Proxies for Camoufox Running Camoufox at scale? Your browser setup is only half the stack. Your proxy layer matters too. Proxidize provides mobile and residential proxies built for scraping, browser automation, SEO monitoring, AI agents, and data collection workflows. Why Proxidize? • Real 4G and 5G mobile proxies • Residential proxies in 195+ countries • Rotating and sticky sessions • City-level and carrier targeting • Unlimited concurrency • HTTP(S), SOCKS5, and UDP over SOCKS support • No hardware or DIY setup required Built for teams that need reliable proxy infrastructure without managing devices, servers, or proxy rotation themselves. Special offer for Camoufox users: Use code CAMOUFOX20 for 20% off. Start now: https://proxidize.com
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Camoufox is a Firefox build for web scraping and AI agents. Every launch gets a fresh, internally consistent device identity drawn from the real-world distribution of devices, and the browser reports it from C++, so a page sees native values rather than JavaScript overrides. Playwright drives it, through an automation layer the page cannot see.

pip install -U "camoufox[geoip]"
camoufox fetch

from camoufox.sync_api import Camoufox

with Camoufox(headless=True) as browser:
    page = browser.new_page()
    page.goto("https://example.com")

import asyncio
from camoufox.async_api import AsyncCamoufox

async def main():
    async with AsyncCamoufox(headless=True) as browser:
        page = await browser.new_page()
        await page.goto("https://example.com")

asyncio.run(main())

// npm install camoufox playwright-core && npx camoufox fetch
import { Camoufox } from "camoufox";

const browser = await Camoufox({ headless: true });
const page = await browser.newPage();
await page.goto("https://example.com");
await browser.close();

What you get back is a normal Playwright Browser. Behind a proxy, add proxy=... and geoip=True so timezone, locale, geolocation and the WebRTC IP match the exit IP. For many identities in one browser, use NewContext().

flowchart TB
    YOU(["Your Playwright code"])

    subgraph L["Launcher: python/ or typescript/"]
        FP["fpgen<br/>draws a real device"] --> CO["coherence.py<br/>rejects impossible combinations"]
        CO --> ID[["Identity"]]
        GEO["geoip<br/>timezone, locale, WebRTC IP"] --> ID
    end

    subgraph B["Patched Firefox: browser/"]
        MC["MaskConfig<br/>reads CAMOU_CONFIG"] --> API["Web APIs answered in C++<br/>navigator, screen, WebGL,<br/>fonts, audio, WebRTC"]
        SET["Per-context setters<br/>sealed before page script"] --> API
        JG["Juggler<br/>isolated world"]
    end

    PAGE(["The web page"])

    YOU -- "1 launch options" --> L
    ID == "2 CAMOU_CONFIG + prefs" ==> MC
    ID -- "3 NewContext()" --> SET
    YOU <-- "4 Juggler protocol" --> JG
    API -- "native values" --> PAGE
    JG -. "trusted input, DOM reads;<br/>no code in the page" .-> PAGE

    classDef you fill:#eef2f6,stroke:#57606a,color:#1f2328
    classDef launcher fill:#ddf4ff,stroke:#0969da,color:#0a3069
    classDef browser fill:#fff1e5,stroke:#bc4c00,color:#4a1c00
    classDef page fill:#dafbe1,stroke:#1a7f37,color:#0f3d1c
    class YOU you
    class FP,CO,ID,GEO launcher
    class MC,API,SET,JG browser
    class PAGE page
    style L fill:none,stroke:#0969da,stroke-dasharray:4 3,color:#0969da
    style B fill:none,stroke:#bc4c00,stroke-dasharray:4 3,color:#bc4c00

1. The launcher draws a device from fpgen (a model of real traffic), then adds fonts, voices, a GPU and media devices seeded by that identity. coherence.py rejects combinations no real machine produces.
2. The identity goes to the browser as the CAMOU_CONFIG environment variable (keys declared in browser/settings/properties.json). The patches read it through MaskConfig and answer from C++.
3. NewContext() gives one context its own identity through setters that the per-context patches add to window. They are sealed before page script runs.
4. Playwright talks to Juggler. Camoufox's Juggler runs its page agent in an isolated world, so the page never sees automation code.

Each row says where it is implemented. A patch is a file in browser/patches/; Juggler is browser/additions/juggler/; the launcher is the Python and TypeScript packages.

The goal is a browser that behaves exactly like stock Firefox, except that it reports a different machine. A value is spoofed when it identifies the host machine or the network. Anything else stays as Firefox has it, because something stock Firefox never does, such as noise, is a fingerprint in its own right.

Left as stock Firefox has it, on purpose:

Each context of one browser can carry its own identity: docs/per-context-patches.md.

Canvas and WebGL pixels come from the real OS, driver and GPU, whatever the identity claims. The launcher chooses the canvas behaviour from two facts: does the identity claim the host's OS, and does the host render on a GPU?

That is the default. These options override it:

Noise is set per browser, not per context. Without it, every NewContext() claims the host's OS. Details are in the canvas on another OS.

The full option list is in the Python README.

Playwright drives Chromium over CDP but Firefox over Juggler, a protocol that is a separate module inside Firefox. That makes it possible to give Juggler its own copy of the page: Playwright reads and edits that copy, and the real page never sees a getter fire or a listener appear. Input goes through Firefox's own input handlers, so it is handled as a user's would be.

Camoufox can still be detected. Thousands of values must agree with each other, and anti-bot vendors look for the one that does not. File a detection report when you find one.

Each dot is a mousemove event the page received from six page.mouse.move() calls with humanize=True, shown at the speed it arrived; close dots mean the hand slowed down. browser/scripts/cursor-demo.py regenerates the figure.

Camoufox does not compute its cursor paths. It picks one of Cursory's 2356 recorded human movements that suits the move, morphs it onto the start and end points, and replays it with the recording's own timing, including pauses and overshoots. It ships cursory-js, a TypeScript port that reproduces the Python original exactly, at browser/additions/juggler/input/cursory/. Cursory is LGPLv3-or-later, not MPL-2.0 like the rest of the browser; see NOTICE.

This repository is not the Firefox source. It fetches Firefox, copies in browser/additions/, applies browser/patches/ and builds. The build runs on Linux; the Windows and macOS binaries are cross-compiled. WSL does not work.

flowchart TB
    subgraph IN["From this repository"]
        direction LR
        UP["upstream.sh<br/>Firefox version"]
        ADD["additions/ + settings/<br/>files copied in"]
        PAT["patches/<br/>diffs applied"]
    end

    S1["<b>1. make dir</b><br/>download Firefox, copy additions,<br/>apply every patch"]
    S2["<b>2. make bootstrap</b><br/>toolchains, once per machine"]
    S3["<b>3. make build</b><br/>./mach build"]
    S4["<b>4. make package-linux</b><br/>or package-macos, package-windows"]
    FONTS["font bundle + fontconfig"]
    OUT[("Release archive")]

    IN --> S1 --> S2 --> S3 --> S4 --> OUT
    FONTS --> S4

    classDef input fill:#ddf4ff,stroke:#0969da,color:#0a3069
    classDef step fill:#fff1e5,stroke:#bc4c00,color:#4a1c00
    classDef out fill:#dafbe1,stroke:#1a7f37,color:#0f3d1c
    class UP,ADD,PAT,FONTS input
    class S1,S2,S3,S4 step
    class OUT out
    style IN fill:none,stroke:#0969da,stroke-dasharray:4 3,color:#0969da

git clone --depth 1 https://github.com/daijro/camoufox
cd camoufox/browser
make dir                        # fetch Firefox, copy additions, apply every patch
make bootstrap                  # one time: host packages and mach bootstrap
make build                      # ./mach build
make run                        # run the build
make package-linux arch=x86_64  # or package-macos / package-windows

make help lists every target. Install ccache: a cold build takes about 40 minutes and an incremental one about 5.

To build and package several targets in one go:

python3 multibuild.py --target linux windows macos --arch x86_64 arm64

Artifacts are written to browser/dist/.

cd browser
docker build -t camoufox-builder .
docker run -v "$(pwd)/dist:/app/dist" camoufox-builder --target linux --arch x86_64

The container takes the multibuild.py flags. Add -v "$HOME/.mozbuild":/root/.mozbuild:rw,z to reuse the host's toolchains.

A way to find what a site detects without deobfuscating its JavaScript: start from stock Firefox and add Camoufox's changes back until the site flags.

flowchart TD
    START(["A site flags Camoufox"]) --> Q1{"Does it flag<br/>stock Firefox?"}
    Q1 -- yes --> NB["Not the browser:<br/>a bad IP or rate limiting"]
    Q1 -- no --> BASE["Build the debug baseline<br/>make ff-dbg (1), make build (2)"]
    BASE --> Q2{"Does it flag the<br/>baseline headless (4)?"}

    Q2 -- yes --> Q3{"Headed (3)<br/>as well?"}
    Q3 -- yes --> NB
    Q3 -- no --> Q4{"Still flagged with<br/>privacy.resistFingerprinting (6)?"}
    Q4 -- no --> FPP["Enable FPP and drop overrides<br/>until the leak returns"]
    Q4 -- yes --> DEOB["Deobfuscate the site's script<br/>to see what it tests"]

    Q2 -- no --> CFG["Apply config.patch (5)<br/>and rebuild (2)"]
    CFG --> Q5{"Still passes (3)?"}
    Q5 -- no --> PREFS["Remove prefs from camoufox.cfg (6)<br/>until it passes"]
    Q5 -- yes --> PW["Apply playwright/0-playwright.patch (5)<br/>and rebuild (2)"]
    PW --> Q6{"Still passes (3)?"}
    Q6 -- no --> JUG["Debug Juggler"]
    Q6 -- yes --> REST["Apply the other patches one at a time<br/>until it flags"]
    JUG -. "if Juggler looks clean" .-> DEOB

    classDef start fill:#eef2f6,stroke:#57606a,color:#1f2328
    classDef ask fill:#ddf4ff,stroke:#0969da,color:#0a3069
    classDef step fill:#fff1e5,stroke:#bc4c00,color:#4a1c00
    classDef found fill:#dafbe1,stroke:#1a7f37,color:#0f3d1c
    class START start
    class Q1,Q2,Q3,Q4,Q5,Q6 ask
    class BASE,CFG,PW step
    class NB,FPP,DEOB,PREFS,JUG,REST found