How to Scrape Logos from Websites [For Developers]

Brand.dev is developing an API that allows users to retrieve comprehensive company brand data, including logos, from any domain with a single API call. This blog post offers insights into web scraping techniques for extracting company logos at scale using Node.js and TypeScript, covering methods such as DOM traversal, filtering non-logo images, handling dynamic content, and avoiding scraper blockers. It also discusses alternative computer vision-based approaches for logo detection when DOM parsing fails, using models like YOLO for object detection, and methods for filtering out non-logo images based on size, aspect ratio, and context. The post outlines strategies for deduplicating logos using perceptual hashing and provides tips for handling various image formats and dynamic sites using headless browsers like Puppeteer. Additionally, it addresses challenges in scaling the scraping process across thousands of domains, preventing scrape blocking, and suggests leveraging automated solutions like Brand.dev's API for efficiently fetching high-quality logos and related brand data.