JSON & Data
Format, validate, repair and convert structured data between JSON, XML, YAML, CSV and Excel spreadsheets. They are made for developers debugging API responses, analysts cleaning exports and anyone who needs to reshape a data file without sending it to a third-party server.
39 tools
Popular tools
JSON Formatter & Beautifier
Turn a minified or messy JSON document into readable, consistently indented text, with a precise error message if the JSON is invalid.
JSON & Data
JSON Validator
Check whether a piece of text is valid JSON and locate the exact character where it goes wrong.
JSON & Data
JSON Repair
Paste almost-JSON from a log, a chat answer or a JavaScript snippet and get valid JSON back, with a clear report of every change.
JSON & Data
CSV to JSON Converter
Turn CSV rows into clean JSON in one step, with typed values, custom delimiters and pretty or minified output.
JSON & Data
JSON to CSV Converter
Paste a JSON array and get a CSV file ready for Excel or Google Sheets, with nested data flattened into columns.
JSON & Data
YAML to JSON Converter
Turn YAML into strict JSON, resolving anchors, aliases and merge keys along the way.
JSON & Data
All tools in this category
- JSON Formatter & Beautifier
- JSON Validator
- JSON Repair
- CSV to JSON Converter
- JSON to CSV Converter
- YAML to JSON Converter
- JSON to YAML Converter
- XML to JSON Converter
- JSON to XML Converter
- XML Formatter & Beautifier
- YAML Formatter & Beautifier
- XML Validator
- YAML Validator
- JSON Minifier
- JSON Viewer
- Excel to CSV Converter
- JSONPath Finder
- Excel to JSON Converter
- CSV to Excel Converter
- JSON to TypeScript
- Excel Viewer
- CSV Viewer
- JSON Key Sorter
- CSV Validator
- JSON Escape
- JSON Unescape
- CSV Delimiter Converter
- XML Minifier
- Excel Sheet Extractor
- CSV Formatter
- JSON Diff – Compare Two JSON Documents
- CSV Filter
- CSV Sorter
- CSV Column Extractor
- CSV Merger
- CSV Deduplicator
- CSV Column Remover
- XML Escape
- XML Unescape
Frequently asked questions
Can I convert Excel or CSV files without uploading them?
Yes. Files are read by your browser and converted locally, so the contents never reach a server. Very large spreadsheets are limited only by your device's memory.
Why does my JSON fail validation?
The usual causes are trailing commas, single quotes instead of double quotes, unquoted keys and comments, none of which are allowed in strict JSON. The validator points to the position of the first error, and the repair tool can fix many of these automatically.
Will converting YAML or XML to JSON lose information?
Sometimes. YAML comments and anchors have no JSON equivalent, and XML attributes and mixed content must be mapped to keys by convention. Review the output when round-tripping data between formats.