Web Product Scraper is a free Chrome extension for resellers, dropshippers and small online shops. It turns the shop page you have open (a category, collection, search or product page) into a table in Chrome's side panel: name, price, list price, SKU, brand, category, stock, rating, description, photos, videos and link.
Search, filter and sort the table, tick the rows you want, then export Excel, CSV or JSON, copy the table into Google Sheets, create a Shopify or WooCommerce import file (products as drafts, sizes and colours as variants), download one ZIP with every product photo in a folder per product, or make a printable PDF catalogue with your logo, your prices and a WhatsApp button on every product.
It can follow a shop's pages, scrape a pasted list of product and category links, and repeat a page every day or week with a notification when a price drops. It reads Shopify, WooCommerce, Magento and BigCommerce stores and most custom shops. Free, with no paid tier and no account; everything runs in the browser.