Selenium gets caught by anti-bots and captchas.
This one runs on an anti-detect Firefox with an undetected fingerprint, compatible with your existing Selenium code.
## How it works
Anti-bots ask two questions, and reCAPTCHA, hCaptcha and Cloudflare Turnstile score the answers. invisible_selenium answers yes to both.
**1. Is this a real browser?** Yes. It is Firefox, patched at the C++ source level.
- The browser fingerprint is set inside the engine, not injected into the page: navigator, screen, GPU/WebGL, canvas, fonts, audio, WebRTC, timezone, network. Headless or headed, the same values either way.
- No geckodriver and no Marionette, so nothing turns `navigator.webdriver` on, and no JavaScript shim for a page to find.
**2. Is a real person using it?** Yes. The actions are humanized in the driver.
- Every click, hover and drag follows a natural mouse path with human timing, no teleporting cursor.
- Input goes through the browser's real input path, so the page sees trusted events.
---
## Install
```bash
pip install invisible-selenium
python -m invisible_selenium fetch # one-time download of the patched Firefox, sha256-verified
```
Requires **Python 3.11 or newer**. Supported platforms: **Windows x86_64 / ARM64** (the x86_64 engine, under Windows' own emulation), **Linux x86_64 / arm64**.
---
## Usage
**Selenium's API, with no code changes.** The same `webdriver`, `By`, `WebDriverWait` and `expected_conditions`. If you already use Selenium, switching is the import:
```diff
- from selenium import webdriver
- from selenium.webdriver.common.by import By
+ from invisible_selenium import webdriver
+ from invisible_selenium.webdriver.common.by import By
```
```python
from invisible_selenium import webdriver
from invisible_selenium.webdriver.common.by import By
from invisible_selenium.webdriver.support.ui import WebDriverWait
from invisible_selenium.webdriver.support import expected_conditions as EC
driver = webdriver.Firefox()
driver.get("https://example.com")
WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.TAG_NAME, "a"))).click() # the mouse arcs to the link
print("seed =", driver.seed) # log it to replay the run
driver.quit()
```
Every session gets a distinct fingerprint (GPU, audio, fonts, screen, ~200 fields). Do not install Selenium alongside it: this package already implements its API.
### Options
```python
driver = webdriver.Firefox(
seed=42, # same seed, same fingerprint, every run
proxy={"server": "socks5://host:1080", "username": "u", "password": "p"},
timezone="America/New_York", # default: derived from the proxy's exit IP
pin={"screen.width": 2560, "screen.height": 1440}, # force fields, the rest stays seed-derived
headless=True, # hidden desktop, real rendering: same fingerprint as headed
profile_dir="./profile", # cookies and storage survive the run
)
```
Proxies can be `socks5`, `socks4`, `http` or `https`, and DNS goes through them too. `FirefoxOptions` work as they do in Selenium, `-headless` included. The fields you can pin are the same as in invisible_playwright: **[pinning](https://github.com/feder-cr/invisible_playwright/blob/main/docs/pinning.md)**.
## CLI
```bash
invisible-selenium fetch # download the engine if missing, check every cached one, print the path
invisible-selenium version # wrapper, core and engine versions
```
---
## Related projects
- **[invisible_playwright](https://github.com/feder-cr/invisible_playwright)**: the same engine with Playwright's API, and **[the guides](https://github.com/feder-cr/invisible_playwright/blob/main/docs/guides.md)** on how detection works.
- **[invisible_puppeteer](https://github.com/feder-cr/invisible_puppeteer)**: the same engine with Puppeteer's API, in Python.
- **[invisible_playwright_mcp](https://github.com/feder-cr/invisible_playwright_mcp)**: the same engine for AI agents, over MCP.
- **[invisible_core](https://github.com/feder-cr/invisible_core)**: turns a seed into a fingerprint and the fingerprint into Firefox preferences. This package depends on an exact version of it.
- **[firefox_antidetect_patch](https://github.com/feder-cr/firefox_antidetect_patch)**: the C++ patches that build the browser.
**Switching from another tool?**
- **[selenium-stealth](https://github.com/diprajpatra/selenium-stealth)**: it patches the page from JavaScript, and its last commit is from December 2021. [What that means](https://github.com/feder-cr/invisible_playwright/blob/main/docs/selenium-stealth-unmaintained.md).
## Development
```bash
git clone https://github.com/feder-cr/invisible_selenium && cd invisible_selenium
uv venv && uv pip install -e ".[dev]"
uv run pytest -q # unit
uv run pytest -q -m e2e # against the real browser
```
## License
MIT, see [LICENSE](LICENSE). The Juggler client it drives the browser with lives in [invisible-core](https://github.com/feder-cr/invisible_core), which carries two files taken from Playwright's driver under Apache-2.0. The patched Firefox binary is MPL-2.0, built from [feder-cr/firefox_antidetect_patch](https://github.com/feder-cr/firefox_antidetect_patch).
## Disclaimer
This project is for educational purposes only. It is provided as-is, with no warranties. I take no responsibility for how it is used. Use it at your own risk and in compliance with the laws of your jurisdiction.
---
