DEV Community

Cover image for Scraping JavaScript-heavy sites without a browser
Lucas Gragg
Lucas Gragg

Posted on

Scraping JavaScript-heavy sites without a browser

Packaged web scraper toolkit this week after running it in production for ~60 days. Notes on what worked and what didn't.

The problem

A flexible, production-ready web scraping framework that handles JavaScript-rendered pages, pagination, and anti-bot protections. Build scrapers for any website in minutes with built-in data cleaning and export tools.

What's in the box

  • Supports static HTML and JavaScript-rendered pages
  • Built-in proxy rotation and user-agent spoofing
  • Automatic pagination and infinite scroll handling
  • Data cleaning and deduplication pipeline
  • Export to CSV, JSON, SQLite, or Excel

Code sample

# Basic structure
class Bot:
    def __init__(self, config):
        self.config = config

    def run(self):
        while True:
            self.scan()
            self.execute()
Enter fullscreen mode Exit fullscreen mode

If you want the full working version with all the battle-tested edge cases
handled, I packaged it here: Web Scraper Toolkit

Happy to answer questions about the architecture in the comments.

Top comments (0)