nodrivervschromedp

AGPL-3.0 14 2 4,003

321.9 thousand (month) Jan 15 2024 0.48.1(2025-11-09 05:57:23 ago)

12,937 6 172 MIT

May 10 2021 58.1 thousand (month) chromedp(2026-04-01 00:05:30 ago)

nodriver is a Python library for browser automation that communicates directly with the browser via the Chrome DevTools Protocol (CDP), without relying on Selenium or chromedriver. It is the successor to undetected-chromedriver, created by the same author, and is designed from the ground up to be undetectable by anti-bot systems.

Key advantages over traditional browser automation:

No chromedriver dependency Communicates directly with Chrome/Chromium via CDP websocket, eliminating the most common detection vector (chromedriver fingerprint).
Undetectable by default Does not set the navigator.webdriver flag, does not inject automation-related JavaScript, and avoids CDP detection patterns that anti-bot systems look for.
Fast and lightweight Without the Selenium/WebDriver protocol overhead, nodriver is significantly faster at launching browsers and executing commands.
Async-first Built entirely on Python's asyncio, enabling efficient concurrent browser automation.
Simple API Clean, Pythonic API that is easier to use than raw CDP or Selenium.

nodriver is particularly useful for scraping websites protected by advanced anti-bot systems like Cloudflare, DataDome, or PerimeterX, where standard Selenium or Playwright setups get detected and blocked.

ChromeDP is an open-source library for driving browsers using the Chrome DevTools Protocol (CDP) in the Go programming language. It is a high-level library that abstracts away the low-level details of interacting with the CDP and provides a simple, intuitive API for performing common browser automation tasks such as clicking elements, filling out forms, and taking screenshots.

ChromeDP also supports parallel execution of browser tasks, making it well-suited for large-scale web scraping and testing applications. It is considered as one of the most popular Go package for automation and scraping tasks.

Highlights

anti-detectcdpasyncfast

Example Use

```python import nodriver as uc import asyncio async def main(): # Launch browser - undetected by default browser = await uc.start() # Open a new tab and navigate tab = await browser.get("https://example.com") # Wait for an element and interact with it search_box = await tab.find("input[name='q']") await search_box.send_keys("web scraping") # Click a button button = await tab.find("button[type='submit']") await button.click() # Wait for navigation and extract content await tab.wait_for("div.results") results = await tab.query_selector_all("div.result") for result in results: title = await result.query_selector("h3") print(await title.get_text()) # Take a screenshot await tab.save_screenshot("results.png") browser.stop() asyncio.run(main()) ```

```go package main import ( "context" "fmt" "github.com/chromedp/chromedp" ) func main() { var title, firstParagraph string // create context ctx, cancel := chromedp.NewContext(context.Background()) defer cancel() // run task list (a scraping scenario) err := chromedp.Run(ctx, // go to page chromedp.Navigate("https://www.example.com"), // wait for element to load chromedp.WaitVisible("body"), // extract text from an element (css selector) chromedp.Text("title", &title), // extract first paragraph element chromedp.First(chromedp.ByTagName("p"), &firstParagraph), ) if err != nil { fmt.Println("error:", err) return } fmt.Printf("Title: %s\n", title) fmt.Printf("First paragraph: %s\n", firstParagraph) } ```