Fingerprint Injector

Web automation and scraping often run into anti‑bot defenses that look not just at request headers but deeper at browser fingerprints — a combination of browser settings, JavaScript properties, screen size, and other subtle signals used to distinguish real users from bots. The fingerprint‑injector package lets you take generated browser fingerprint data and inject it into browser automation frameworks like Playwright or Puppeteer, giving your automation a more natural, realistic footprint.

It’s part of the modular fingerprint‑suite toolkit from Apify, designed to work with other packages like header‑generator and fingerprint‑generator. Together, these tools help you create browser automation that mimics real human browsers — overriding built‑in automation defaults and reducing detection.

With fingerprint‑injector, you can run Playwright‑ or Puppeteer‑controlled browsers with injected fingerprints affecting headers, JavaScript APIs, and other browser signals. This helps your automated tasks blend in with ordinary web traffic and improves success on sites with fingerprint‑based bot defences.

⚙️ Steps to Install

📦 Install via npm

npm install fingerprint-injector

or

yarn add fingerprint-injector

(This pulls in the latest release of the package from npm.)

🧪 Basic Usage Examples

🚀 With Playwright

import { newInjectedContext } from 'fingerprint-injector';
import { chromium } from 'playwright';

(async () => {
  const browser = await chromium.launch({ headless: false });
  const context = await newInjectedContext(browser, {
    fingerprintOptions: {
      devices: ['mobile'],
      operatingSystems: ['ios'],
    },
  });

  const page = await context.newPage();
  await page.goto('https://example.com');
})();

This creates a new browser context with a fingerprint injected before pages are created.

🧠 With Puppeteer

import puppeteer from 'puppeteer';
import { newInjectedPage } from 'fingerprint-injector';

(async () => {
  const browser = await puppeteer.launch({ headless: false });
  const page = await newInjectedPage(browser, {
    fingerprintOptions: { devices: ['mobile'] },
  });

  await page.goto('https://example.com');
})();

This injects fingerprint details into a Puppeteer page before visiting the URL.

🎯 Benefits (Why Use It?)

✅ Mimics Real Browser Behavior
Injects fingerprint data into Playwright or Puppeteer sessions, making automated browsers behave more like real user browsers.

✅ Works with Fingerprint‑Suite Tools
Designed to integrate with fingerprint‑generator and header‑generator for a complete fingerprinting strategy.

✅ Reduces Bot Detection
Helps evade anti‑bot systems that analyze browser fingerprints beyond simple headers.

👍 Pros & 👎 Cons

👍 Pros

• Integrates cleanly with popular automation frameworks (Playwright/Puppeteer).

• Helps mimic real user browsers for better scraping and automation success.

• Part of a modular toolkit for fingerprinting and header customization.

👎 Cons

• Not useful standalone — best paired with tools that generate fingerprints.

• Doesn’t handle network requests or rendering logic by itself.

• Only relevant in scenarios where fingerprinting is a problem; may be overkill for simple automation.

🔄 Alternatives