Paste broken JSON, YAML or AI output — we'll tell you what's wrong and fix it
Free, private developer tools for JSON, YAML, and XML. Everything runs locally — your data never leaves your device.
All tools run 100% in your browser. No uploads, no tracking, no sign-up.
JSON
JSON Formatter
Format and beautify JSON with customizable indentation. Runs entirely in your browser — no data uploaded. Free, fast, and private.
JSON Validator
Validate JSON and find exact error locations with plain-English explanations. Runs in your browser — no data uploaded. Free and private.
JSON Viewer
Explore JSON in an interactive tree view with search, JSONPath inspection, and virtualized scrolling for huge files. Runs in your browser. Free and private.
JSON Minifier
Minify and compress JSON. See byte savings before and after, plus a gzip size estimate. Runs in your browser. Free and private.
JSON Unescape
Unescape doubly or triply escaped JSON strings. Auto-detects escape depth and shows how many levels were unescaped. Runs in your browser. Free.
JSON Escape
Escape JSON or text into a string literal for JavaScript, Python, Java, or C#. Options for Unicode escaping and quote wrapping. Runs in your browser.
JSON Flatten
Flatten nested JSON into dot-notation paths and unflatten it back. Custom delimiters, bracket or dot array index style. Runs in your browser. Free.
JSONC to JSON
Convert JSONC (JSON with comments) to standard JSON. Strips // and /* */ comments and trailing commas safely. Runs in your browser. Free and private.
Convert
JSON to YAML
Convert JSON to YAML with key order preservation. Handles nested structures, arrays, and multi-document output. Runs in your browser. Free and private.
YAML to JSON
Convert YAML to JSON with multi-document support, anchor/alias resolution, and key order preservation. Runs in your browser. Free and private.
XML to JSON
Convert XML to JSON with options for attribute prefixes, text node keys, force-array, and namespace handling. Values are strings by default. Runs in your browser.