Steam Market History Helper

v2.0.0 - 2026-03
A complete rewrite with a modern tech stack, new features, and significant performance improvements.

New Features

• 11 languages — English, Turkish, Russian, Chinese, French, German, Spanish, Portuguese (Brazil), Polish, Japanese, and Korean
  
• Welcome page — step-by-step onboarding for first-time users with automatic account detection
  
• Diagnostics page — database health checks, repair tools, and a real-time action log
  
• 7 interactive charts — Purchases vs Sales, Cumulative P/L, Top Games, Top Items, Monthly Summary, Price Distribution, and Activity Heatmap
  
• Dark / Light theme toggle with persistent preference (dark by default, no white flash)
  
• Collection filter — filter transactions by item collection
  
• Fee tooltip — hover over any price to see the fee breakdown (Steam Fee, Publisher Fee)
  
• Inspect in Game overlay — magnifying glass icon on item images for CS2 items with inspect links
  
• Column sorting on listing page — sort by Type, Price, or Date with visual indicators
  
• Fill Missing Item Data tool — automatically repair transactions with missing item info
  
• Loading overlay — visual feedback when sorting, paginating, or filtering
  
• Animated progress bar with moving stripes during active sync
  
• Status indicators — pulsing badge for active sync, colored dots for paused/complete/idle
  
• Saved accounts in popup — quick access to all linked accounts, even when logged out
  
• Filter groups — create custom reusable filter presets with match rules (equals, contains, starts with)
  
• Per-currency profit/loss summary in the history page
  
• More Extensions section in Settings — discover related Steam extensions

• Database engine — switched to SQLite with OPFS persistence for faster queries, better data integrity, and no more corruption errors
  
• Price display — single Price column shows your net amount (+/− prefix, color-coded green/red)
  
• Cross-currency fee fix — fees now display in the correct currency for international transactions
  
• Data sync — smarter resume logic and improved error recovery
  
• Listing page — transaction history on Steam item pages now shows buy/sell totals and pagination
  
• Export — CSV and JSON export now processes in chunks with a progress indicator
  
• Popup — redesigned with compact cards, live sync progress, and real-time updates
  
• Settings — cleaner card-based layout with per-account management and integrity checks
  
• Notifications — richer messages with transaction summaries
  
• Filters — all filters now run as SQL queries instead of client-side JavaScript, much faster on large datasets
  
• Sorting — click any column header to sort; handled by the database, not in-memory
  
• Pagination — smart page numbers with ellipsis for large page counts
  
• Show on Steam — improved reliability

• Migrated from Chrome Manifest V2 to Manifest V3
  
• New font (Geist) for a cleaner, more consistent look
  
• New icon set (Lucide) for smaller bundle size
  
• New charts library (Recharts) with more chart types

• Seller Received column — replaced by fee tooltip for a cleaner layout
  
• Raw Responses backup table — each transaction now stores its own raw data, more space-efficient
  
• Separate changelog page — replaced by this integrated view