All Tools

Format, beautify and validate JSON with clear error messages.

Check whether a JSON document is valid and locate syntax errors.

Convert JSON documents into readable YAML.

Parse YAML and convert it into formatted JSON.

Turn an array of JSON objects into a CSV table.

Convert CSV or delimited text into a JSON array.

Encode text to Base64 and decode Base64 back to text.

Percent-encode and decode URLs and query parameters.

Convert Unix timestamps to dates and back, in seconds or ms.

Convert between bytes, KB, MB, GB and TB in binary or decimal.

Decode JWT header and payload claims locally in your browser.

Generate cryptographically random UUID v4 identifiers.

Test regular expressions with live matches and capture groups.

Build cron expressions visually and explain existing ones.

Format and minify SQL queries for several dialects.

Compare two texts line by line and highlight the changes.

Search a reference of HTTP status codes and their meanings.

Find the MIME type for a file extension, or the reverse.

Build cURL, fetch and Python requests snippets from a request.

Parse, edit and rebuild URL query parameters.