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On Amazon book pages, lists and search: estimated daily sales from BSR, category depth, and keyword competition. KDP Lens shows estimated daily sales, category depth, and keyword competition on Amazon book pages. After you install: • On a book page you see Best Sellers Rank turned into estimated sales per day, and how high you need to rank to be #1 in each listed category • On a best-seller list you see each rank with its estimated sales • On search results you see how many hits there are, average reviews of the top 10, and the share that look indie vs big publisher This listing is free to install. Free use is 10 Amazon pages a day. A paid lifetime key is $49 once, bought on our site, not through this store. Paste that key in the popup. A valid key lifts the daily cap. It never logs into KDP. It never sends page text off your machine. It never gives legal advice. Sales numbers are estimates, not Amazon's payout file and not a receipt. How to use it 1. Install this listing. It is free. 2. Open an amazon.com Kindle or paperback product page, a category best-seller list, or a search results page. 3. A panel appears on the page with the estimates. 4. The popup shows how many free pages you have used today. 5. If you bought a lifetime key on our site, paste it in the popup. The key is printed on our thank-you page after you pay. Price Install: free. Free use: 10 amazon.com pages a day, counted on this computer. Paid: $49 once at https://ustechautomations.com/feeds/kdp-lens/ Not a subscription. What the numbers are Estimated sales per day come from Best Sellers Rank and a rank-to-sales curve. The curve is an estimate. It is not calibrated on Amazon receipts. Treat it as a research hint, not a payout. This version reads amazon.com (United States). Other Amazon country stores are not included. Privacy Book titles, ranks, reviews, and other page text stay on your machine. The only network call is a license-key check, and only when you paste a key into the popup. We do not sell browsing data. We do not create a KDP account for you. We do not log into Amazon as you. What it never does • Log into KDP or Amazon as you • Send page text to our servers • Upload a book • Give legal or tax advice • Promise a sales number is a receipt
Sep 8, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.