The latest articles on DEV Community by SellerScope Global (@sellerscope_2682e8a5). https://dev.to/sellerscope_2682e8a5 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4212742%2F070b0e8f-dcb4-4b98-8197-76131ac89d86.png https://dev.to/sellerscope_2682e8a5 en SellerScope Global Wed, 28 Oct 2026 10:03:10 +0000 https://dev.to/sellerscope_2682e8a5/how-i-built-a-free-chrome-extension-to-analyze-amazon-products-in-30-seconds-41ma https://dev.to/sellerscope_2682e8a5/how-i-built-a-free-chrome-extension-to-analyze-amazon-products-in-30-seconds-41ma <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F290g8j4e3ulk2wdk3nhf.jpeg" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F290g8j4e3ulk2wdk3nhf.jpeg" alt=" " width="800" height="320"></a></p> <p>Finding winning products on Amazon usually means spending hours switching between tabs, managing complex Excel spreadsheets, and calculating profit margins manually.</p> <p>To solve this for Amazon sellers, I built SellerScope Global — a free Chrome extension designed to streamline product research into a fast 3-step workflow.</p> <p>🛠️ The Core Problem<br> When evaluating an Amazon product, sellers need to quickly check:</p> <p>Sales Estimates &amp; BSR: Is the product actually selling?</p> <p>Profit Margins &amp; Fees: After FBA fees and GST/taxes, is there enough margin left?</p> <p>Competition: Is the niche too crowded for a new seller?</p> <p>Most existing tools require expensive monthly subscriptions ($50–$99/month), which can be a heavy barrier for beginner and growing sellers.</p> <p>🚀 How SellerScope Global Automates Research<br> Instead of leaving the Amazon product page, the extension overlays essential data directly on top of the listing:</p> <p>📊 Opportunity Score (0–100): Instantly gauge market demand vs. competition.</p> <p>📈 Monthly Sales Volume &amp; BSR Tracking: Get quick estimates of how many units sell per month.</p> <p>💰 FBA Profit &amp; Margin Calculator: Factoring in fulfillment fees, product costs, and GST automatically.</p> <p>💡 Tech Stack &amp; Architecture<br> For fellow developers interested in how browser extensions process real-time page data:</p> <p>Manifest V3: Built using the latest Chrome Extension API specs for better security and fast content scripts.</p> <p>Content Scripts: Used to extract key page parameters (ASIN, BSR, pricing) without slowing down page render times.</p> <p>Background Service Workers: Handles API requests and background calculations asynchronously.</p> <p>🔗 Try It Free<br> If you are an Amazon seller or building in the e-commerce space, feel free to try it out and share your feedback!</p> <p>Website: getsellerscope.com<br> Chrome Web Store: Search for SellerScope Global<br> Youtube: /@sellerscopeglobal</p> <p>If you have any questions about building Manifest V3 extensions or automating e-commerce data workflows, drop a comment below!</p> webdev javascript showdev extensions