Detect Marketplace Listing Changes Instantly
AI Detection
Smart algorithms that understand content changes, not just code diffs.
Instant Alerts
Get notified via Email, Slack, or Discord the moment a change is detected.
Visual Comparison
See side-by-side visual diffs to instantly spot layout shifts and visual bugs.
Daily/Hourly Checks
Flexible monitoring frequencies to suit your needs, from hourly to daily.
Marketplace platforms like Amazon and eBay change constantly. Listing rules, ranking algorithms, seller fees, and category structures evolve without notice. Missing these changes can cost you visibility and revenue.
WatchDiff lets you monitor any public marketplace page: competitor listings, category pages, policy documents, or seller guideline pages. When something changes, you are notified first.
The AI filters out cosmetic or dynamic changes and focuses on what matters: product title edits, description updates, pricing shifts, or structural changes in category pages.
For sellers who depend on marketplaces for a significant share of revenue, automated surveillance means faster adaptation to platform changes before they impact your rankings or sales.
How It Works
Add marketplace pages to monitor
Paste URLs of any marketplace pages you want to watch: competitor listings, category pages, or platform policy documents.
AI analyzes and filters content
WatchDiff learns the page structure and tracks the elements that matter, ignoring dynamic noise like session tokens or view counters.
Get alerts on relevant changes
Receive detailed notifications showing exactly what changed, with a side-by-side comparison of the previous and current version.
Frequently Asked Questions
Can WatchDiff monitor Amazon and eBay listings?
Yes. WatchDiff monitors any public web page, including product listings and category pages on Amazon, eBay, and other major marketplaces.
How often are pages checked?
You control the check frequency based on your plan. Pages can be verified multiple times per day, ensuring you are notified quickly after any change.
Can I monitor marketplace policy or fee pages?
Yes. Just add the URL of the policy or terms page. WatchDiff will detect any content change on that page and alert you immediately.
Explore More Use Cases
Discover other ways to use WatchDiff for your monitoring needs.
Competitor Price Monitoring
Automatically track competitor pricing across any e-commerce site. Get instant alerts when prices change so you can respond before losing sales.
Supplier Inventory Monitoring
Automatically monitor supplier stock availability. Get instant alerts when products come back in stock or go out of stock so you can reorder first.
Price Change Alerts
Get instant alerts when product prices change on any e-commerce site. WatchDiff monitors prices automatically with AI-powered detection.
Product Pages
Monitor competitor and supplier product page changes automatically. Detect updates to descriptions, images, prices, and specifications with AI-powered alerts.
Terms of Service
Automatically track changes to terms of service and platform policies. Stay informed about updates that impact your business with instant alerts.
Competitor Landing Pages
Track changes to competitor landing pages automatically. Get alerts when messaging, offers, or designs change with AI-powered monitoring.
New Competitor Products
Get alerts when competitors launch new products or update their catalog. AI-powered monitoring catches changes you would miss manually.
Shipping Policies
Track changes to competitor shipping rates, free shipping thresholds, and delivery policies. Get alerts when competitors adjust their shipping strategy.
Product Availability
Track product stock status and availability changes on any website. Get alerts when items go in or out of stock with AI-powered monitoring.