JSON5 Code Formatter
Format and beautify your JSON5 code instantly with our free online tool
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How JSON5 Code Formatter Works
Format your JSON5 code in three simple steps
Paste Your Code
Copy your unformatted or messy JSON5 code and paste it into the input editor. The formatter supports standard JSON5 syntax and common formatting patterns.
Click Format
Hit the "Format Code" button and watch as our intelligent formatter instantly restructures your code with proper indentation, spacing, and JSON5 best practices.
Copy or Download
Your beautifully formatted code appears in the output panel. Copy it to your clipboard with one click or download it as a .json5 file for immediate use in your projects.
JSON5 Formatting Best Practices
Writing clean, readable, and well-structured JSON5 improves maintainability, debugging, and collaboration while supporting relaxed JSON syntax.
1. Consistent Indentation
Maintain a uniform indentation style throughout your JSON5 data:
- Use 2 spaces per level consistently.
- Helps readability and reduces errors when parsing.
2. Meaningful Keys
Use descriptive and consistent keys:
- Keys should clearly describe the data they hold.
- Supports camelCase, snake_case, or quoted keys for flexibility.
3. Proper Use of Comments
JSON5 allows comments; use them for clarity:
- Use single-line (//) or multi-line (/* */) comments sparingly.
- Helps explain complex objects or arrays.
4. Avoid Trailing Commas in Critical Systems
JSON5 supports trailing commas, but be careful:
- Useful for version control and diff readability.
- Check compatibility if exporting to strict JSON parsers.
5. Validate JSON5
Always validate your JSON5 before use:
- Use JSON5 linting tools to ensure proper syntax.
- Prevents runtime errors and improves data reliability.
6. Use Automated Formatters
Automate JSON5 formatting for consistency:
- Use online JSON5 formatters or IDE plugins.
- Reduces manual errors and improves team collaboration.
Before Formatting
{
users:[{name:'Alice',age:25},{name:'Bob',age:30},{name:'Charlie',age:28},],active:true,settings:{theme:'dark',notifications:true,languages:['en','fr','de'],},// metadata
metadata:{version:'1.2.3',lastUpdated:'2026-01-16T00:00:00Z',},
}
After Formatting
{
users: [
{ name: 'Alice', age: 25 },
{ name: 'Bob', age: 30 },
{ name: 'Charlie', age: 28 },
],
active: true,
settings: {
theme: 'dark',
notifications: true,
languages: ['en', 'fr', 'de'],
}, // metadata
metadata: { version: '1.2.3', lastUpdated: '2026-01-16T00:00:00Z' },
}
Why JSON5 Formatting Matters
Properly formatted JSON5 is easier to read, debug, and maintain. It improves collaboration, supports relaxed syntax features, and ensures consistent data exchange.
- Readable JSON5 reduces errors and simplifies debugging.
- Supports comments and trailing commas for maintainability.
- Facilitates integration with APIs and tools that support JSON5.
- Encourages professional and consistent data formatting habits.
JSON5 Code Formatter Features & Benefits
Why developers choose our JSON5 formatter
Lightning Fast
Instant code formatting with zero wait time. Process large files in milliseconds directly in your browser without any server delays.
100% Private & Secure
Your code never leaves your browser. All formatting happens client-side, ensuring complete privacy and security for your sensitive code.
Industry Standards
Follows JSON5 community best practices and coding standards. Produces clean, readable code that passes linting rules and code reviews.
Smart Indentation
Automatically detects and applies proper indentation levels for nested structures, functions, objects, and arrays for optimal readability.
Fully Responsive
Works seamlessly on desktop, tablet, and mobile devices. Format code anywhere, anytime with a consistent experience across all screen sizes.
Completely Free
No subscriptions, no hidden fees, no registration required. Use it unlimited times for personal and commercial projects without any restrictions.
No Installation
Zero setup required. Start formatting immediately without downloading software, installing packages, or configuring development tools.
Dark Mode Support
Easy on the eyes with a beautiful dark mode option. Toggle between light and dark themes for comfortable coding sessions day or night.
Who Should Use This JSON5 Formatter Tool?
This JSON5 formatter is designed for developers, teams, and learners who work with relaxed JSON syntax, comments, and modern data structures.
Frontend & Backend Developers
Format JSON5 used in configuration files, APIs, and data exchange for better readability and maintainability.
API Engineers
Ensure consistent and well-structured JSON5 responses for APIs while supporting comments and trailing commas.
Data Analysts & Engineers
Maintain clean and organized JSON5 datasets for processing, analysis, and integration in data pipelines.
Students & Learners
Learn proper JSON5 formatting, understand relaxed JSON features, and practice writing structured data.
Team Leads & Collaborators
Enforce consistent JSON5 formatting across teams, improving collaboration and maintainability of projects.
Open Source Contributors
Ensure contributions with JSON5 are clean, readable, and aligned with modern standards and community practices.