Introduction Visual testing is crucial for ensuring UI consistency across releases. While commercial tools exist, sometimes you need a custom solution tailored to your specific needs. This guide walks you through creating your own visual testing tool using Selenium and Python. Table of Contents Introduction Why Build a Custom Visual Testing Tool? Core Components Implementation Guide Advanced Features Integration & Scaling Reporting & Analysis Common Challenges & Solutions Limitations & Considerations Conclusion & Next Steps Why Build a Custom Solution? Specific requirements  not met by commercial tools Cost savings  for simple projects Complete control  over comparison logic Learning opportunity  about image processing Core Components 1. Screenshot Capture with Selenium python from selenium import webdriver import os def capture_screenshot ( url , filename ) : """Capture screenshot of a webpage""" driver = webdriver . C...