JSON to Excel Converter - Convert any JSON to Excel in second 100% private, no uploads

I built JSON to Excel Converter — a free, browser-based tool that converts any JSON data into a downloadable Excel (.xlsx) spreadsheet in seconds. How it works: → Paste any JSON directly or upload a .json / .jsonl file → The tool instantly parses and validates your data → Drag and drop columns to reorder them exactly how you want → Preview your full dataset live before downloading → Click Download — get a clean, properly formatted .xlsx file in milliseconds

Hi everyone! Maker here 👋 I'm a developer and I got tired of two problems with every "JSON to Excel" tool online: 1. They upload your data to their servers — terrible for sensitive API responses 2. They're slow — server queue, upload time, processing time So I built this entirely in the browser using SheetJS. Everything runs locally on your device. I benchmarked it against the top 5 competitors — it's over 5x faster because there's literally zero upload time. The feature I'm most proud of: nested JSON auto-flattening. You can paste a deeply nested API response and it automatically creates columns like user.address.city — no pre-processing needed. Happy to answer any questions! If you find a JSON format it can't handle, let me know and I'll fix it. 🙏

JSON to Excel Converter - Convert any JSON to Excel in second 100% private, no uploads

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