E-commerce → GSTR-1 JSON Converter

Upload a marketplace sales report, get a GST-portal-ready GSTR-1 JSON. Runs entirely on your own server.

Marketplace Sales report file (.xlsx) Seller GSTIN (optional — auto-detected if left blank) Return period (optional — format MMYYYY, e.g. 062026)

Nothing is stored — the file is processed in memory and the JSON is streamed back to you.