What this is
KDP Lens reads the Amazon.com page already in your tab. The 0.1.2 update separates an explicit overall Books or Kindle Store rank from category and list positions. If an overall rank is missing or ambiguous, it shows Unavailable. Search averages and publisher groupings are calculated locally. Page text stays on your machine; saved license keys may be rechecked by the entitlement service.
Every figure on this page is a demo overlay. These made-up values illustrate the public 0.1.2 overlay. They are not current Amazon observations or sales evidence. 0.1.2 does not predict sales or rank targets for reaching category #1.
What Chrome 0.1.2 showsdemo
- Book pageTitle, explicitly stated overall Books or Kindle Store rank, observed category placements, price, reviews, and publisher. Missing or conflicting overall rank is shown as Unavailable.
- Best-seller listThe displayed list position and title for up to ten entries. A list position is not treated as an overall book rank.
- Search resultsResult count and review averages from the parsed results, plus a heuristic grouping of up to ten entries by publisher. These summaries do not measure demand or predict sales.
Demo of the public 0.1.2 overlayone product page
These hand-written examples illustrate the public 0.1.2 panel on a made-up Kindle book page. They were not read from amazon.com.
| Field | Demo value |
|---|---|
| Title | The Salt Road (demo) |
| Store | kindle (demo) |
| Best Sellers Rank | #12,450 in Kindle Store (demo) |
| Category | #42 in Historical Fantasy (demo) |
| Listed price | $4.99 (demo) |
| Reviews | 318 (demo) |
| Publisher | Independently published (demo) |
Demo of the other two page types, from the same sample file:
| Page type | What the panel shows (demo) |
|---|---|
| Best-seller list | #1 on this list: Ash Court (demo). Overall book rank unavailable. |
| Search results | 4,000 results; average 1,391 reviews in the top 10; 60% grouped as indie by a local heuristic (demo) |
Free and paid
- Free: 10 pages a dayCounted in your browser. At 11 the panel shows Unlock — $49 and a link back to this page.
- Paid: $49 onceA one-time key from the entitlement service, with no renewal charge; it works while that service and the add-on stay available. Paste it in the popup. A good check is cached 7 days so the add-on still works offline.
- InstallChrome: install from the Chrome Web Store.
What it never does
- Never touches your KDP accountNo login, no dashboard scrape, no upload.
- Never sends page textBook titles, ranks, and reviews stay on your machine. License verification sends your key to the entitlement service, including rechecks of a saved key.
- Never a receiptRanks, review counts, and publisher groupings do not establish unit sales, revenue, or a route to category #1.
See the overlay before you pay
You do not have to take our word for what sits in the file. Here is the demo overlay, illustrating the public 0.1.2 overlay, labeled as a demo. The downloadable examples also include list and search summaries.
- Open the demo overlay as a CSVA plain spreadsheet file. It saves to your machine rather than painting itself into a browser tab, and it opens in Excel, Numbers or Google Sheets.
- The same demo overlay as JSONThe same rows again, laid out for reading with code.
What arrives after you pay: The license key is printed on the thank-you page after payment. Paste it into the add-on popup.
What you would be paying for: $49 once for a KDP Lens license key, with no renewal charge. Free use is 10 Amazon pages a day without a key. The add-on never touches your KDP account and never sends page text off your machine. It is not a subscription.
Start the thread
$49 once · one license key, no renewal. Free use is 10 Amazon pages a day. A valid key lifts the daily cap
Buy the license key — $49 onceChrome: install from the Chrome Web Store. The license key is printed on the thank-you page after payment.
Chrome Store status checked 12 Sep 2026: public version 0.1.2. Installation is separate from the paid license. Edge availability has not been verified.