Private JSON Formatter & CSV to SQL

Format and minify JSON, or convert CSV/TSV/JSON files to SQL INSERT statements — entirely in your browser. Nothing is uploaded.

Format JSON and convert files to SQL INSERT — with zero uploads. Private JSON Formatter & CSV to SQL runs 100% in your browser. Your files, rows, and query text never leave your device: no account, no server, no tracking. • Format JSON — pretty-print with 2/4 spaces or tabs, or minify. Syntax errors are reported with the exact line and column. • File → SQL — drop a CSV, TSV, TXT, or JSON file and get ready-to-run INSERT statements. Pick the table name, dialect (PostgreSQL / MySQL / SQLite), and rows per statement. Single quotes are escaped correctly and column types (integer / numeric / boolean / text) are inferred. • Copy or download the result in one click. Built for engineers and anyone handling data they cannot upload to a third-party converter — financial rows, customer lists, internal exports. Need more? The full web workspace at https://xkjson.com adds cleaning options, CSV / Markdown export, and larger files. Your data never leaves this browser.