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The PolyMetrics Product Price Analysis Extension for Envato (polymetrics) is a Chrome Extension (Manifest V3) engineered for authors, developers, and product researchers selling items on Envato Market (CodeCanyon and ThemeForest). It transforms standard product pages into data-rich analytics hubs, providing automated author fee calculations, net profit estimations, interactive Chart.js data visualizations, smart category-colored bookmarks, and productivity tools for customer support management.
Core Features & Subsystems
1. Revenue & Net Profit Calculation Matrix
- Author Fee Tier Calculations: Automatically applies Envato author fee brackets (12.5% - 37.5%) to estimate gross revenue, buyer fees, author fees, and final net profit before and after taxes.
- 17+ Currency Conversion: Converts USD product pricing and earnings into 17+ global currencies using dynamic exchange rates.
- Product Lifecycle Tracking: Calculates exact total days since item launch and last version update date.
2. Data Visualization Engine (Chart.js v4)
- 5 Interactive Chart Types: Generates Bar, Line, Radar, Polar Area, and Pie charts directly on product pages to compare sales metrics, price distributions, and revenue projections.
3. Smart Bookmark System & Sliding Side Panel
- 1-Click Item Bookmarking: Bookmark reference items directly from title headers across CodeCanyon and ThemeForest.
- Sliding Side Panel: Sliding side panel displaying bookmarks organized by custom category colors with keyword search and category filtering.
- Unified Item ID Normalization: Normalizes bookmarked URLs to the main item ID, sharing bookmark state seamlessly across main, reviews, comments, and support pages.
4. Customer Support Productivity Toolbar
- Smart List Formatting: Auto-wraps selected text lines into ordered
<ol>or unordered<ul>lists with<li>tags. - 1-Click Comment Copy: Quick copy button adjacent to comment authors for rapid response handling.
- Quick Links Manager: Shared quick link repository linked by Item ID for instant access to documentation and support resources.
System Architecture & Data Flow
graph TD
A[User Opens CodeCanyon OR ThemeForest Product Page] --> B[Manifest V3 Content Script Injected background.js & scripts.js]
B --> C[Extract Item Price Sales Count & Published Dates]
C --> D[Apply Envato Author Fee Matrix 12.5% to 37.5% & Calculate Net Profit]
D --> E[Render Interactive Chart.js Visualizations & Currency Converter]
E --> F[Inject Comment Editor Productivity Toolbar & Smart Bookmarks Side Panel]
