# JSON Repair

> Repair common JSON mistakes such as trailing commas, comments, and unquoted keys, then pretty-print the result. Runs locally so broken fixtures are not posted to a fixer.

Runs in your browser. Nothing is uploaded.

[Web](https://toolbuddy.dev/categories/web.md)

## About this tool

Repair messy JSON: trailing commas, comments, and unquoted keys, then pretty-print. Built on jsonrepair in the tab so broken fixtures stay on the device.

How to use: paste invalid JSON, copy the repaired document. If repair cannot recover a value you get a parse error.

Example: {name: "Ada",} becomes {"name":"Ada"}. This is recovery, not a schema linter. Related: JSON formatter for already-valid input.

## Related Web tools

- [JSON Formatter](https://toolbuddy.dev/tools/json-formatter.md): Pretty-print, minify, and validate JSON in your browser. Paste a payload, fix indentation, and spot syntax errors without sending data to a server. Works for APIs, config files, and nested objects. Output stays on your device.
- [JavaScript Formatter](https://toolbuddy.dev/tools/javascript-formatter.md): Beautify or compact JavaScript in the browser. Re-indent minified snippets from DevTools, or collapse whitespace for a rough size check. Formatting stays on-device so proprietary scripts are never posted to a beautifier.
- [SQL Formatter](https://toolbuddy.dev/tools/sql-formatter.md): Beautify SQL in the browser with dialect-aware formatting for PostgreSQL, MySQL, SQLite, and T-SQL. Paste a query, pick indent, and copy readable SQL without sending statements to a formatter service.
- [HTML Formatter](https://toolbuddy.dev/tools/html-formatter.md): Beautify or minify HTML markup locally. Re-indent nested tags, collapse whitespace for production snippets, and copy formatted markup without posting templates to a formatter service. Handy for emails, partials, and messy copy-paste from DevTools.
- [CSS Formatter](https://toolbuddy.dev/tools/css-formatter.md): Format and minify CSS in the browser. Expand rules for readability or compress stylesheets for a quick size check. Paste a snippet, tidy selectors and declarations, and copy the result. Proprietary styles are not uploaded.
- [XML Formatter](https://toolbuddy.dev/tools/xml-formatter.md): Pretty-print or minify XML documents in your browser. Indent nested elements from SOAP, RSS, and config files, or collapse whitespace for a compact blob. Parsing and formatting never leave the tab.