Hey HN,I’m Prince, and together with Vansh (a CA article), we built GST Reco Pro (https://gstrecopro.in).In India, Chartered Accountants and tax professionals waste hours copy-pasting tables from GSTR-1 and GSTR-3B PDFs into Excel for audits and tax reconciliation. Existing online converters require uploading sensitive financial PDFs (containing PANs, revenues, and transaction logs) to external servers. This is a massive compliance risk.We built a 100% client-side parser to solve this.Technical Highlights: - No Server Processing: It uses pdfjs-dist to parse text layouts client-side in the browser and ExcelJS to build and download the Excel file. Your data never leaves your browser. - Bulk Parsing: Users can drag-and-drop up to 24 GSTR PDFs (12 of GSTR-1 and 12 of GSTR-3B) at once. - Clean Output: Outputs formatted spreadsheets designed specifically for Excel s VLOOKUP and pivot tables. - Tech Stack: React 19, Vite, TanStack Start Router, Supabase (for local user credits tracking), Razorpay.We d love to hear your feedback on the client-side parsing performance and how we can improve the utility. We are also thinking of supporting JSON-to-Excel next!