Amazon Keyword Expander & 250B SEO Optimizer
Instant A~Z 500+ Autocomplete Keyword Generator & 250-Byte Backend Search Terms Optimizer
The Chrome version is currently pending store review. Drop your email to get notified the second it goes live. No spam, ever.
Technical Highlights
- 1-Click Turbo A~Z & 0~9 bulk 500+ keyword generation in < 5 seconds
- 250-Byte Backend Search Terms optimizer with live byte counter
- Kindle KDP 7-slot keyword pack generator (≤ 50 chars each)
- 1-Click Google Sheets (TSV) and CSV data exports
- Dual Interface: Native Side Panel & Quick Popup
- 100% Client-side privacy with polite rate-limiting defense
Core Capabilities
Designed for Speed, Accuracy, and Zero Friction
Turbo A~Z Keyword Harvest
Queries Amazon suggest API from A to Z and 0 to 9, surfacing 500+ real customer search queries instantly.
250-Byte Backend Optimizer
Frequency-ranked keyword deduplication with interactive chip swapper and live UTF-8 byte gauge.
KDP 7-Slot Generator
Auto-formats high-relevance search terms into 7 strict 50-character slots for Kindle Direct Publishing.
Google Sheets TSV Copy
1-click copy clean tab-separated keyword tables straight to your clipboard for instant spreadsheet paste.
Engineering Overview
Stop guessing what Amazon buyers type into the search bar. Amazon Keyword Expander automatically queries the official Amazon autosuggest engine across all alphanumeric permutations, surfacing hundreds of high-intent search queries in real time.
Includes an interactive 250-byte Backend Search Terms optimizer that auto-deduplicates words, ignores filler punctuation, and calculates exact UTF-8 byte weights to ensure 100% Seller Central indexing compliance.
Pricing
Start Free. Upgrade Anytime for Lifetime Power.
Instant in-app activation via Dodo Payments. Transparent lifetime license without recurring traps.
Free Starter
Basic keyword discovery for everyday listing optimization
What's Included:
- 4 free searches per day
- Standard A~Z keyword generation
- Interactive 250-byte optimizer preview
- Single keyword clipboard copy
Early Bird Pro Lifetime
Unlimited keyword intelligence for professional Amazon & KDP sellers (In-App Upgrade)
What's Included:
- Unlimited Turbo A~Z & 0~9 bulk keyword searches
- Full 250-byte backend search terms optimizer with chip swap
- Kindle KDP 7-slot keyword pack generator
- 1-Click Google Sheets (TSV) and CSV export
- Native Side Panel workspace layout
- Lifetime commercial license with multi-device sync
Install the extension for free using the store buttons at the top of the page. Pro features are activated seamlessly inside the extension.
FAQ
Frequently Asked Questions
What is the 250-byte backend keyword limit?
Amazon Seller Central limits backend search terms to strictly 250 bytes (not characters). Exceeding 250 bytes causes Amazon to ignore all backend keywords entirely. Our tool counts exact UTF-8 bytes to guarantee compliance.
Is this tool safe against Amazon rate limits?
Yes. Keyword Expander includes intelligent token bucket rate-limiting and jitter delays between requests, ensuring seamless operation without triggering bot challenges.