100% Local · Nothing Uploaded · Browser-Only

Crypto Transaction Analyzer

Upload your exchange CSV and instantly see how many taxable events you have, which assets you traded, and exactly which software plan you need. Everything runs in your browser — we never see your data.

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Drop your exchange CSV here

Or click to browse. Supports Coinbase, Binance, Kraken, Gemini, and most standard CSV formats.

Runs 100% in your browser — your file never leaves your device

Choose CSV File

100% local processing — no data ever leaves your device. Your CSV is read by JavaScript running in your browser. Nothing is uploaded, stored, or transmitted to any server. We physically cannot see your transactions. You can verify this by disconnecting from the internet before uploading.

How to export your transactions

Coinbase

Reports → Transaction history → Generate report → Download CSV

Binance

Orders → Transaction History → Export

Kraken

History → Export → CSV

Gemini

Account → Balances → Download history