invisible_playwright/README.md
2026-06-06 15:24:23 +02:00

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# invisible_playwright
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**Stealth Firefox that passes every bot detection test. Drop-in Playwright replacement, fingerprint patched at the C++ level, not a JavaScript shim.**
![invisible_playwright - 5/5 detection suites passed](docs/screenshots/hero.gif)
## Why it's powerful
**Most other anti-detect browsers patch Chromium at the JavaScript level** - they override `navigator`, `WebGLRenderingContext.getParameter`, canvas APIs, and so on via injected scripts. This has two fatal problems:
1. **JS patches are detectable.** Anti-bots enumerate native function `.toString()`, check descriptor configurability, compare property enumeration order, watch for prototype mutations. Every patch leaves a fingerprint of its own. CreepJS has an entire battery of "lies detectors" built around this.
2. **Chromium itself is now suspect.** Residential-proxy bot traffic is overwhelmingly Chromium-based, so detectors weight anything Chromium-shaped as risky by default. Chromium-based forks inherit Chrome's open-source layers (BoringSSL, Blink, V8, ANGLE) cleanly, but they still cannot fully match Chrome in practice: Chrome ships closed-source components on top (Widevine, proprietary codecs, Google Update / Safe Browsing endpoints) that flip detectable JS feature flags and network signals, and forks lag Chrome's release cadence by days to weeks, leaving telltale version-specific behaviours that detectors lock onto.
**invisible_playwright patches Firefox at the C++ level.** The spoofed values come back out through the normal Gecko paths - there is no JS shim, no override, no `Object.defineProperty`. **From the page's point of view, the browser is just telling the truth.** Anti-bot lie-detectors have nothing to latch onto.
invisible_playwright spoofs **all the layers that matter, together, coherently**: Navigator, screen, GPU/WebGL, Canvas, fonts, audio, WebRTC, timezone, DevTools detection, SOCKS5 auth, and the rest. See [feder-cr/invisible_firefox](https://github.com/feder-cr/invisible_firefox) for the full per-layer breakdown of which C++ files are patched and why.
Everything is driven by preferences - no hardcoded values in the binary. You change one pref, you change the spoofed value.
---
## How it compares
**CloakBrowser** ships a similar pitch for Chromium, but its binary is **closed source** (the source-level patches are not published, you only get the compiled output), and it still hits the Chromium reCAPTCHA ceiling. The commercial anti-detect browsers (**Multilogin**, **GoLogin**, AdsPower, Dolphin, Kameleo) are paid SaaS that overlay JS-layer spoofing on a patched Chromium. Managed profiles are nice but raw detection bypass sits below both Camoufox and us.
| | invisible_playwright | Camoufox | CloakBrowser | Multilogin |
|---|---|---|---|---|
| Engine | Firefox 150 | Firefox (~1 year old base) | Chromium | Chromium fork |
| Patch depth | C++ source | C++ source | C++ source (binary only) | JS overrides |
| Maintenance | Active (weekly) | Gap (~1 year) | Active | Active SaaS |
| Open source | ✅ MIT | ✅ MPL | ❌ Closed source | ❌ Closed source |
| `.toString()` clean | ✅ | ✅ | ✅ | ❌ Detectable shims |
| Canvas / WebGL / Audio | ✅ C++ | ⚠️ Drift vs current FF | ✅ C++ | ⚠️ JS override |
| SOCKS5 auth | ✅ Patched | ❌ | ⚠️ Playwright proxy | ⚠️ Varies |
| **reCAPTCHA v3 score** | **0.90** | ~0.3-0.5 | ~0.3-0.5 | ~0.3-0.6 |
| FP Pro - bot detected | ✅ Not detected | ❌ Detected | ❌ Detected | ❌ Detected |
| CreepJS lies | ✅ 0 | ❌ Multiple | ✅ 0 | ❌ Multiple |
| Cost | Free | Free | Free | From $99/mo |
---
## Install
```bash
pip install git+https://github.com/feder-cr/invisible_playwright.git
python -m invisible_playwright fetch # one-time ~100 MB download, SHA256-verified
```
Supported platforms: **Windows x86_64**, **Linux x86_64**.
---
## Usage
### Random fingerprint per session
**100% Playwright-compatible** - sync and async, all methods, zero API changes. If you already use Playwright, switching is two lines:
```diff
- from playwright.sync_api import sync_playwright
- with sync_playwright() as p:
- browser = p.firefox.launch()
+ from invisible_playwright import InvisiblePlaywright
+ with InvisiblePlaywright() as browser:
```
Every session gets a unique, coherent fingerprint drawn from real-world Firefox telemetry (GPU / audio / fonts / ~400 other fields) and Bezier-curve mouse motion baked into the browser itself.
**Sync**
```python
from invisible_playwright import InvisiblePlaywright
with InvisiblePlaywright(proxy={"server": "socks5://...", "username": "u", "password": "p"}) as browser:
page = browser.new_page()
page.goto("https://example.com")
page.click("#submit") # mouse arcs to the button on a Bezier curve
```
**Async**
```python
from invisible_playwright.async_api import InvisiblePlaywright
async with InvisiblePlaywright(proxy={"server": "socks5://...", "username": "u", "password": "p"}) as browser:
page = await browser.new_page()
await page.goto("https://example.com")
await page.click("#submit")
```
The `browser` object is a `playwright.sync_api.Browser` / `playwright.async_api.Browser` - every Playwright method works as-is.
---
### Random fingerprint per session
```python
from invisible_playwright import InvisiblePlaywright
with InvisiblePlaywright() as browser:
page = browser.new_page()
page.goto("https://creepjs-api.web.app")
```
Every call samples a new coherent profile. Log the seed to reproduce interesting runs:
```python
sf = InvisiblePlaywright()
with sf as browser:
print("seed =", sf.seed)
# ...
```
### Reproducible fingerprint
```python
with InvisiblePlaywright(seed=42) as browser:
... # same GPU, same canvas hash, same audio context, every run
```
### Proxies
```python
proxy = {
"server": "socks5://gate.example.com:1080",
"username": "user",
"password": "pass",
}
with InvisiblePlaywright(proxy=proxy) as browser:
...
```
Schemes supported: `socks5`, `socks4`, `http`, `https`. Auth works on all of them (SOCKS5 via patched `nsProtocolProxyService.cpp`, HTTP/HTTPS via Playwright). DNS is routed through the proxy by default, no local leak.
### Timezone
The browser timezone follows `timezone=`:
```python
# default: timezone is auto-derived from the egress IP (proxy egress if a
# proxy is set, otherwise the host's own public IP)
with InvisiblePlaywright(proxy=proxy) as browser:
...
# explicit IANA zone always wins — the only way to force a specific zone
with InvisiblePlaywright(proxy=proxy, timezone="America/New_York") as browser:
...
```
### Pinning specific fingerprint fields
By default everything comes from `seed`. To force specific values while the rest stays seed-derived:
```python
with InvisiblePlaywright(
seed=42,
pin={
"gpu.renderer": "ANGLE (NVIDIA, NVIDIA GeForce RTX 4090 Direct3D11)",
"gpu.vendor": "Google Inc. (NVIDIA)",
"screen.width": 2560,
"screen.height": 1440,
"hardware.concurrency": 16,
},
) as browser:
...
```
Full list of pinnable keys, how pinning interacts with the Bayesian sampler, and common patterns are in **[docs/pinning.md](docs/pinning.md)**.
---
## CLI
```bash
invisible_playwright fetch # download the binary if missing
invisible_playwright path # print the absolute path to the cached binary
invisible_playwright version # wrapper and binary versions
invisible_playwright clear-cache # remove all cached binaries
```
## Related projects
invisible_playwright takes a different angle than the major Firefox-hardening projects but stands on their shoulders:
- **[arkenfox/user.js](https://github.com/arkenfox/user.js)** - the canonical Firefox configuration for privacy/security hardening via prefs. Reading arkenfox is how you understand which `user.js` knobs matter; invisible_playwright goes further by patching the C++ source where prefs alone are insufficient (Canvas noise, WebGL parameter overrides, font whitelisting, WebRTC IP swap, DevTools detection bypass).
- **[LibreWolf](https://librewolf.net)** - a Firefox fork bundled with sensible privacy defaults. Same audience, different distribution model: LibreWolf ships a configured Firefox binary, invisible_playwright ships source patches + a wrapper for automation.
- **[Camoufox](https://github.com/daijro/camoufox)** - the most well-known open-source anti-detect Firefox project. We share design goals on the fingerprint-spoofing side; the implementation approach differs (Camoufox patches a wider surface and ships its own fingerprint database, while invisible_playwright sticks closer to vanilla and drives spoofing from a Bayesian sampler).
---
## License
MIT - see [LICENSE](LICENSE). The patched Firefox binary is distributed under the MPL-2.0 (Firefox upstream license). The C++ patches against mozilla-central that produce that binary are at [feder-cr/invisible_firefox](https://github.com/feder-cr/invisible_firefox).