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JSON Formatter & Validator is a free browser-based tool that formats, validates, and minifies JSON instantly. It supports tree view, error highlighting, and auto-fixing common issues like single quotes. All processing happens locally in your browser — no data is ever sent to a server.
Beyond JSON formatting, the site offers 20+ additional tools: convert JSON to CSV, YAML, XML, TOML; format HTML, SQL, YAML, XML; decode JWT tokens; test regex; encode/decode Base64 and URLs etc.
jsonformat.orgJSON, formatter, validator, developer tools, online tools
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JSON Formatter & Validator is a free, privacy-first developer tool that runs entirely in your browser. Paste any raw or minified JSON to instantly beautify and validate it with precise error messages. Features include 2-space/4-space/tab indentation, interactive tree view, minifier, and auto-fix for common syntax issues. Beyond JSON formatting, the site offers 20+ additional tools: convert JSON...
jsonformat.orgJSON, formatter, validator, developer tools, online tools