Base64 Encoder & Decoder
Encode plain text (including full UTF-8 Unicode and emojis) to Base64 or decode Base64 strings back to readable text with error validation.
JSON Formatter & Validator
PopularValidate, pretty-print, and minify JSON payloads safely using native JSON.parse and JSON.stringify with detailed syntax error reporting.
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How to Use JSON Formatter & Validator
- 1Paste your raw or minified JSON string into the input editor (or load a sample payload).
- 2Choose your indentation level (2 spaces, 4 spaces, or Tab) and click 'Format / Validate', or click 'Minify JSON' for compact single-line output.
- 3If the JSON is invalid, inspect the highlighted error banner showing the exact syntax error message and position.
- 4Click 'Copy JSON' or 'Download .json' to export your validated data.
Key Features & Privacy
- ✦Strictly uses native `JSON.parse` and `JSON.stringify` — never evaluates user input as executable JavaScript.
- ✦Pinpoints syntax errors with human-readable error descriptions and line/column offset estimation.
- ✦Supports 2-space, 4-space, Tab indentation, optional alphabetical key sorting, and compact single-line minification.
- ✦Displays payload statistics: byte size, object keys count, and maximum nesting depth.
Frequently Asked Questions
Is it safe to paste sensitive configuration JSON here?
Yes. Parsing happens exclusively via your browser's built-in `JSON.parse()` engine with zero network calls and no `eval()` execution.
Why does trailing comma or single-quoted JSON fail validation?
According to the official RFC 8259 JSON specification, property names and strings must use double quotes (`"`) and trailing commas are forbidden.
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