Data tools

Pretty-print JSON with clear errors and line numbers.

Check if JSON is valid and see exactly what is wrong.

Remove spaces and line breaks to make JSON smaller.

Explore JSON as a collapsible tree.

Format, minify, explore and tabulate JSON in one place.

Compare two JSON documents key by key.

Turn CSV rows into JSON objects or arrays.

Turn a JSON array into a spreadsheet-ready CSV.

Convert YAML to JSON and JSON to YAML.

View, search, sort and export CSV as a table.

Trim cells, drop empty rows and columns, remove duplicates.

Find repeated rows in CSV, by every column or by key columns.

Filter CSV rows by a column and sort the result.

Realistic fake names, emails, cities and numbers as JSON or CSV.