Wallet history → Koinly / KoinX import files
Everything runs in your browser. Your files and address are never uploaded. Only public addresses; no private keys, no seed phrases, ever.
Export from the explorer's "Download CSV Data" page (etherscan.io/exportData, bscscan.com/exportData ...).
Read before importing. This tool only reformats data. It does not fetch prices, compute taxes or give tax advice. Always review the result in Koinly/KoinX.
Internal transfers between your own wallets, DeFi positions and multi-token transactions may need manual tags. Gas fees and swaps are detected from the data in your files.
Format sources: Koinly custom CSV,
KoinX Custom File.
FAQ
Does it upload my files?
No. Conversion runs entirely in your browser. Your CSVs, JSON and address stay on your device.
Do you need private keys or seed phrases?
Never. Only public addresses and explorer exports. Do not paste private keys or seeds anywhere on this page.
Is this tax advice?
No. The tool only reformats wallet history for import. It does not compute taxes or give tax advice. Review results in Koinly/KoinX and consult a professional if needed.
Need several wallets at once, categorisation rules (airdrop / reward / gift / donation...), spam filtering and a monthly summary?
The Pro pack (Python scripts + rules pack, paid in USDC) is on Getly:
CryptoTax PRO.
Free MIT core (same browser converter + scripts) is also on Getly:
CryptoTax FREE.
Source and docs:
gitlab.com/plantillas-ar/cryptotax-tool.
The core converter is MIT-licensed and free forever.