Observed book ranks, category placements, prices, reviews and local search summaries on amazon.com.
Users
17
+11 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#165K
#137K among extensions
Version
0.1.2
updated 12 Sep 2026
Users
monthly, 1 months
Latest, 21 Oct 2026:17 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 months
Latest, 21 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About KDP Lens
KDP Lens reads the Amazon book page already open in your tab and shows you, plainly, what the page itself states.
After you install:
• On a book page you see the observed Best Sellers Rank (the overall rank, shown only when Amazon labels it “Books” or “Kindle Store”), each category placement, price, review count, and publisher
• On a best-seller list you see each listed position and title
• On search results you see how many hits there are, the average reviews of the top 10, and the share that look indie vs big publisher
KDP Lens does not estimate sales, does not convert rank into a sales number, and does not tell you “how high to rank to hit #1.” It reports observations, not predictions. A category or list position is never presented as an overall rank, and a missing or unlabeled rank is shown as Unavailable, never as zero.
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.
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 observed details.
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
Product ranks, category placements, prices and review counts are read from the page. Search summaries are calculated locally from the visible results: average reviews and shares grouped by publisher text. Publisher grouping is a heuristic and may be wrong; these are not market-share or demand measurements. KDP Lens does not model demand, earnings, calibrated sales, or competition thresholds.
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. License verification sends your key to the entitlement service when you verify it or when a saved key needs rechecking. It does not send Amazon page content. Scripts, styles, and the Satoshi font are bundled with the extension. 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
• Estimate or predict sales, earnings, or rank