High-Velocity Browser Utilities for Professional Workflows
Lightweight, zero-latency browser extensions built for high-volume research, data extraction, and repetitive workplace automation. Engineered for Chrome & Microsoft Edge with zero background trackers and 100% in-browser processing.
Product Catalog
Production Extensions Built for Velocity
Filter by professional category or explore our purpose-built suites.
Amazon Quick View & BSR Seller Browser
Inline BSR Rankings, 4-Factor Niche Opportunity Scorer & Live FBA Margin Calculator for Amazon
- Zero-Click In-Page BSR & Category Percentiles (Top 0.1%, Top 1%, Top 5%)
- 4-Factor Niche Opportunity Score (0~100) analyzing Demand, Competition, BuyBox & Margins
- 1-Click Live Search Filter Toolbar (Hide Amazon 1P, FBM Only, Top BSR ≤10K)
- Interactive Floating FBA Margin Calculator with live COGS presets (20%, 30%, 40%)
Amazon ASIN Grabber & Fast Exporter
Ultra-Fast Bulk ASIN Scraper, 1-Click Google Sheets TSV Copy & Multiformat Exporter
- 1-Click bulk extraction of all visible ASINs in under 100ms
- Zero-Format Google Sheets & Excel Export (TSV clipboard copy)
- Turbo Multi-Page Scraper: Crawl 2 to 20 pages (100 to 1,000+ ASINs) safely
- Real-Time Live Filters: FBA Only, Prime Eligible, ★ 4.0+ Ratings
Amazon Keyword Expander & 250B SEO Optimizer
500+ Autocomplete Keyword Harvester, Statistical Word Frequency Ranking & 250-Byte Backend Optimizer
- 1-Click Turbo A~Z & 0~9 bulk 500+ keyword generation in < 1.5 seconds
- 250-Byte Backend Search Terms optimizer with live UTF-8 byte gauge
- Interactive Click-to-Swap word chips with greedy 240~250B backfill
- Banned Promotional Words Filter (removes best, top, cheap, free)
Amazon Review Exporter & AI VOC Analyzer
100% Ban-Proof Review Scraper, 1500px Buyer Media ZIP & 3-Action AI Customer Sentiment Insights
- Extract up to 500 verified reviews with ban-proof Portal DOM streaming
- 1-Click original 1500px HD buyer photos & MP4 video ZIP downloader
- 3-Action AI VOC Views: Factory RFQ & QC, Anti-Return FAQs, and Market Gaps
- PDP Context Extractor: Analyzes official feature bullets & tech specs vs buyer reality
Dual Subtitles & Video Hover Dictionary
Synchronized Bilingual Subtitles, 0.1s Hover Dictionary HUD & 1-Click Anki Exporter for YouTube, Netflix & Udemy
- Synchronized 2-Tier Bilingual Subtitles on YouTube, Netflix 4K & Udemy
- 0.1s Hover Dictionary HUD with 3-Tier Zero-Latency Cache (0ms hit)
- Smart Auto-Pause & Resume State Machine on word hover
- Browser-Native Web Speech Audio TTS with Ear-Protection Volume Clamping
Position Size & Forex Lot Risk Calculator
1% Account Risk Discipline, Crypto Futures Position Sizing & Forex Lot Risk Engine for TradingView & Exchanges
- 1-Click 1% Account Risk Rule Calculation in < 100ms
- Multi-Asset Sizing: Crypto Futures (BTC/ETH/Altcoins), Forex Lots & Equities
- Strict Mathematical Formula: Position Size = Risk Amount / Stop Distance
- Forex Lot Precision: Standard Lots (100k), Mini Lots (10k), Micro Lots (1k)
Fast CORS Unblocker - Instant API Toggle
0ms Declarative CORS Header Injector with Smart Localhost Safe-Mode for Frontend & API Developers
- 1-Click Master Toggle to Bypass CORS with 0ms Latency
- Smart Localhost Safe-Mode: Zero impact on normal browsing or streaming
- Manifest V3 Native declarativeNetRequest Architecture (0% JS packet sniffing)
- Full Credentials & Authentication Cookie Support (Allow-Credentials: true)
Smart Text Expander - Shortcuts & Templates
Instant Keyboard Shortcut Auto-Expansion, Dynamic Form Fillers & Canned Responses for Web & Email
- Instant Keyboard Shortcut Auto-Expansion (< 10ms replacement latency)
- Rich Dynamic Placeholders: {date}, {time}, {clipboard}, {cursor}
- Interactive Fill-In Template Modal Forms with default values & dropdowns
- Universal Web Compatibility: Gmail, Outlook Web, Zendesk, Salesforce, Notion
Featured Bundles
Curated Productivity Suites
Equip your entire team or workflow with bundled multi-tool lifetime packages.
Amazon Seller Suite (4-in-1)
Quick View + ASIN Grabber + Keyword Expander + Review Exporter.
Smart Office Suite (3-in-1)
Universal Table Grabber + Session Vault + Smart Text Expander.
Trader & FinTech Suite
Position Size Calculator + Stock Screener Grabber.
Engineering Architecture
Why Kutor Labs Tools Are Built Differently
Legacy browser extensions frequently suffer from heavy background battery consumption, injected tracking scripts, and fragile DOM scrapers. We build all extensions under strict architectural invariants:
100% Local-First & Zero Telemetry
Your active tabs, spreadsheet data, search queries, and notes never leave your browser. Zero tracking pixels, zero analytics bloat.
Manifest V3 Zero-Latency Execution
Engineered with asynchronous DOM MutationObservers and ephemeral service workers that terminate cleanly without draining system RAM.
Universal Multi-Locale Support
Built-in normalization handles comma decimals, localized currency symbols, and multi-language characters with zero encoding corruption.
Instant Transparent Licensing
Powered by Dodo Payments for instant key fulfillment, generous free starter quotas, and one-time lifetime Pro ownership without recurring traps.
Knowledge Base
Productivity & Workflow Guides
How to Copy Live Web Components to Figma as Pure Vectors (Without Screenshots)
Stop taking pixelated screenshots or rebuilding web components from scratch. Learn how to extract live DOM elements into Figma auto-layout frames adhering to 64 SVG invariance rules.
Amazon VOC Analysis: How to Turn 1-Star Negative Reviews into Flawless OEM Sourcing
Discover how 7-figure Private Label sellers use AI Voice of Customer (VOC) intelligence on competitor 1-star reviews to build supplier RFQs, QC checklists, and anti-return listing FAQs.
AMZ Suggestion Expander Not Working in 2026? Top Free Manifest V3 Alternatives
Frustrated by AMZ Suggestion Expander breaking on modern Amazon or charging $9.99/mo? Compare the top working Manifest V3 keyword alternatives for 2026.
How to Download Amazon Customer Review Photos & Videos in High-Resolution (1500px ZIP)
Learn how to extract and download all original 1500px customer review photos and MP4 unboxing videos from Amazon into a clean ZIP file with 1 click.
Upgrade Your Browser Workflow
Install any of our free starter tools directly from official Chrome Web Store and Microsoft Edge Add-ons. 100% Manifest V3 compliant.
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