primpvspydoll
Primp is a Python HTTP client that impersonates real web browsers by replicating their TLS fingerprints, HTTP/2 settings, and header ordering. It is a lightweight alternative to curl-cffi for bypassing TLS and HTTP fingerprinting-based bot detection.
Key features include:
- Browser impersonation Can impersonate Chrome, Firefox, Safari, Edge, and OkHttp clients by replicating their exact TLS fingerprints (JA3/JA4), HTTP/2 frame settings, header ordering, and other connection-level characteristics.
- HTTP/2 support Full HTTP/2 support with configurable settings that match real browser behavior.
- Lightweight Smaller and simpler than curl-cffi while providing similar impersonation capabilities. Built on Rust for performance.
- Familiar API Provides a requests-like API with Session support, making it easy to adopt for developers familiar with the Python requests library.
- Proxy support HTTP and SOCKS5 proxy support with authentication.
- Cookie management Automatic cookie handling across requests within a session.
Primp fills a similar niche to curl-cffi and hrequests — HTTP clients designed to avoid TLS/HTTP fingerprinting — but takes a Rust-powered approach for better performance. It is particularly useful when you need to bypass bot detection that relies on connection-level fingerprinting without using a full browser.
Pydoll is a Python library for browser automation that uses the Chrome DevTools Protocol (CDP) directly, designed to be undetectable by anti-bot systems. Unlike Selenium-based tools, Pydoll does not use WebDriver and avoids the common detection vectors that anti-bot systems look for.
Key features include:
- Native CDP communication Connects directly to Chrome/Chromium via CDP websocket without intermediary drivers, avoiding the automation flags and fingerprints that WebDriver-based tools leave behind.
- Event-driven architecture Built around an async event system that can listen for and react to browser events like network requests, console messages, and DOM changes.
- Network interception Can intercept, modify, and mock network requests and responses, useful for blocking unnecessary resources or modifying API responses during scraping.
- Async-first design Fully asynchronous API built on Python's asyncio for efficient concurrent automation.
- Clean API Provides a high-level, Pythonic API for common browser automation tasks while still allowing direct CDP command execution for advanced use cases.
- Multi-browser support Can manage multiple browser instances and pages concurrently.
Pydoll fills a similar niche to nodriver and camoufox — browser automation with a focus on avoiding detection — but takes a different approach by providing more granular control over CDP communication and network interception.