How large a JSON file can I open?

Files of several megabytes work smoothly. The limit depends on your device memory because everything is processed in the browser.

Can it fix broken JSON?

Yes. JSON Repair fixes trailing commas, single quotes, missing quotes and comments so the result parses correctly.

Is my data uploaded anywhere?

No. These tools run inside your browser tab, so your input and files stay on your device. Nothing is saved on a server.

JSON tools

A complete set of browser-based JSON utilities: format, validate, minify, compare, view as a tree and convert JSON to XML, YAML or CSV. Nothing is uploaded — every byte stays in your browser.

16 tools in this category · 3 sub-categories

Convert

JSON to XML

Convert JSON into well-formed, indented XML.

JSON to YAML

Convert JSON documents to clean, readable YAML.

JSON to CSV

Flatten a JSON array of objects into a CSV spreadsheet.

Format & Validate

JSON Formatter

Pretty-print and beautify JSON with custom indentation.

JSON Validator

Validate JSON syntax and see detailed error diagnostics.

JSON Minifier

Compress JSON by removing whitespace and show bytes saved.

JSON Viewer

Explore JSON as a collapsible, color-coded tree.

JSON String Escape

Escape special characters for use inside a JSON string.

JSON String Unescape

Reverse JSON string escaping back to readable text.

JSON Repair / Auto-fixer

Auto-fix broken JSON: quotes, trailing commas, comments, and more.

JSON Key Sorter

Sort JSON object keys alphabetically, naturally, or by array field.

JSON Schema Validator

Validate JSON data against a JSON Schema (Draft-07) in your browser.

Inspect & Compare

JSON Compare

Diff two JSON documents and list added, removed, and changed paths.

JSON Path Finder

Explore JSON paths and evaluate simple JSONPath queries.

JSON Schema Generator

Infer a JSON Schema from a sample JSON document.

JSON Merger

Merge two or more JSON documents with shallow/deep strategies.

About json tools

Format, validate, minify and compare JSON, view it as a tree, query it with JSONPath and convert it to YAML, XML or CSV. Use JSON Compare for a structural diff that ignores key order, repair broken JSON and sort or merge files. Ideal for debugging API responses and config files.