LocalJSON
100% client-side, privacy-first B2B data mapper & cleaner
LocalJSON launched on July 26, 2026 with 1 votes.
What it does
Lightweight, ultra-fast data utility that converts messy JSON arrays into clean, interactive tables and formats. Built for developers and data analysts who handle sensitive client data daily. LocalJSON is 100% client-side, running entirely in your browser—your payloads never touch external servers or databases. Filter, rename columns, clean duplicates, and safely export to CSV in seconds without compromising data privacy.
LocalJSON — 100% client-side, privacy-first JSON mapper, formatter & CSV converter. Format, map, and clean sensitive B2B data arrays securely in your browser. Zero server uploads. Works offline. Free tier: 3 actions/day.
LocalJSON runs entirely in your browser — no uploads, no servers, no tracking. Here's the workflow: Paste a JSON array into the input area. LocalJSON auto-detects the structure and shows all available columns. Choose which fields to keep, rename columns for clarity, and reorder them. Perfect for cleaning messy API responses. See your mapped data in an interactive table. Sort, scroll, and verify before exporting. Download as UTF-8 CSV with BOM — ready for Excel, Google Sheets, or your data pipeline. Built for developers, analysts, and B2B teams who work with JSON daily. Paste raw API responses, filter to relevant fields, and export clean CSV for testing or documentation. Map inconsistent…from localjson-black.vercel.app
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JSONBason2025 · jsonbason.com · ▲15I've been at it again, just sharing my simple JSON data inspection tool, love webdev and single page apps, this one took 4 days and was a lot of fun. The code is not obfuscated so you can inspect it and see how it works (very simple, server side is even more simple) Pretty much just do a POST of your JSON data from within your code and it will convert it into a basic table for instant search and sort. Made with love for the fun of it, no ads, no paid anything, it's totally free. Please only send in sanitized/test data only, this is meant to help make webdev a bit easier and more fun.…
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