FormatTools is a fast, private, client-side developer utility suite designed for modern engineers. It offers a comprehensive set of tools for JSON, YAML, XML, Base64, URL, and JWT manipulation, all processed locally within your browser. This ensures maximum privacy as no data is ever sent to a server.

• JSON Formatter: Make messy, minified JSON readable with customizable indentation.

• JSON Validator: Check JSON validity with precise line/column error reporting.

• Base64 Decoder: Decode Base64 text back to readable Unicode instantly.

• URL Encoder: Safely percent-encode text for use in URLs and query strings.

• JSON to YAML: Convert JSON documents to clean, indented YAML.

• JSON to XML: Convert JSON into well-formed XML markup.

• JWT Decoder: Inspect JWT header, payload, and signature with syntax highlighting.

Key Features:

• 100% Client-Side Processing: All operations run entirely in your browser, guaranteeing that your data never leaves your machine.

• Blazing Fast Performance: Optimized algorithms powered by Web Workers ensure UI responsiveness, even with large inputs.

• Privacy-Focused: No accounts, no servers, no logging. Your data is processed locally and is never transmitted, logged, or stored.

• No Accounts or Storage: No sign-up or login required. Only your theme preference is saved locally.

Quick Access: Press Ctrl K to quickly search for any utility tool in the suite.