Toolkit
Online JSON Tools
Validate, format, and transform JSON data with Data File Tool's privacy-first JSON toolkit. All processing happens in your browser with JSON Health Score diagnostics.
JSON Validator
Validate JSON syntax with precise error locations.
JSON Formatter
Format and indent JSON for readability.
JSON Minifier
Minify JSON by removing whitespace.
JSON Beautifier
Beautify JSON with consistent 2-space indentation.
JSON Compare
Compare two JSON documents structurally.
JSON Diff Viewer
View structural differences between two JSON files.
JSON to CSV
Convert JSON arrays to CSV format.
JSON Health Score
Score JSON data quality — depth, types, duplicate keys, empty values.
JSON Pretty Print
Pretty-print JSON with readable formatting.
JSON String Escape
Escape strings for safe JSON embedding.
JSON String Unescape
Unescape JSON-encoded strings back to plain text.