# JSON Format Converter

> Powerful JSON/JSONC/JSON5 editor and converter with syntax highlighting.

Canonical page: [https://chrome-stats.com/d/json-format-converter](https://chrome-stats.com/d/json-format-converter)

## Overview

- **ID:** `json-format-converter`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jetsung Chan
- **Category:** web-development
- **Daily users:** 4
- **Version:** 0.1.2
- **Last updated:** 2025-08-25
- **First published:** 2025-08-22
- **Size:** 138 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/json-format-converter/)
- **Website:** [https://github.com/idev-sig/json-format-converter](https://github.com/idev-sig/json-format-converter)

## Description

A powerful Chrome extension and standalone web application for converting between JSON, JSONC (JSON with Comments), and JSON5 formats with advanced editing features and comment preservation.

FEATURES

ADVANCED EDITOR
• Syntax highlighting with JSON support
• Line numbers for easy navigation and debugging
• Smart bracket matching and auto-closing
• Instant error detection and highlighting

SMART FORMAT CONVERSION
• JSON ↔ JSONC ↔ JSON5 bidirectional conversion
• Preserve comments when converting between JSONC and JSON5
• Same-format processing preserves all comments and formatting
• Automatic property name quoting/unquoting
• Real-time conversion as you type

PROCESSING TOOLS
• Format and prettify JSON data
• Compress/minify by removing unnecessary whitespace
• Escape/unescape JSON strings for embedding
• Convert numbers ↔ strings

ADVANCED SORTING
• Sort object keys alphabetically (A-Z or Z-A)
• Deep sorting for nested objects
• Preserve or reorganize data structure

FILE OPERATIONS
• Copy to clipboard with one click
• Download converted files
• Support for multiple file formats

CUSTOMIZABLE OPTIONS
• Adjustable indentation (2 spaces, 4 spaces, or tabs)
• Multiple sorting options
• Real-time preview of changes

Bug Reports: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/08772be3b62c3cf7b428cb577e3b097f5da67125ec4e5d9cb58d9f0433838fb7/https%3A//github.com/idev-sig/json-format-converter/issues" rel="nofollow">https://github.com/idev-sig/json-format-converter/issues</a>

## Rankings

- #49,139 — Overall
- #46 — format
- #52 — json
- #223 — convert

## Permissions and access

### Permissions

- `tabs`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/json-format-converter)