Online Minifier - Minify JSON, CSS & JavaScript

Free Online JSON Minifier. Compress JSON, CSS, and JS files. View live compression stats and compare with original size. Remove whitespace for production deployment.

Input Code

Click anywhere or press any key to enable all 0 editors with syntax highlighting
Ln 1, Col 1
Size: 0 B
5.0(3 ratings)
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Minified Outputs

No minified outputs yet. Click "Minify" to generate your first version.

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Online Minifier Tool - Minify JSON, CSS & JavaScript for Production

Professional online minifier to compress JSON, CSS, and JavaScript files by removing whitespace, comments, and unnecessary formatting. Reduce file size by up to 40% for faster loading, bandwidth optimization, and production deployment.

Key Features of OJF

Everything you need to manage your data

Multi-Format Minification

  • Minify JSON files - Remove whitespace and optimize data structures
  • Minify CSS - Compress stylesheets by removing comments and spaces
  • Minify JavaScript - Optimize JS code while preserving functionality
  • Language selector dropdown for easy format switching
  • Real-time file size reduction statistics
  • Before/after comparison with compression metrics

Production Optimization

  • Reduce bandwidth usage and improve loading times
  • CDN optimization with smaller payload sizes
  • Network performance enhancement for data transfer
  • Cost reduction for cloud storage and transfer
  • Download minified files or copy to clipboard

Advanced Minification Features

  • Version control for multiple minification outputs
  • Compression ratio tracking and analytics
  • Preserve data integrity while maximizing compression
  • Support for large files up to 15MB
  • Detailed compression metrics and file size statistics
  • Instant preview of minified output with syntax highlighting

How to Minify JSON, CSS & JavaScript

1

Select the language (JSON, CSS, or JavaScript) from the dropdown menu

2

Upload your file or paste the formatted code into the editor

3

Review the original file size and structure

4

Click the minify button to compress and remove unnecessary whitespace

5

Examine the compression statistics showing file size reduction percentage

6

Download the compressed file or copy the minified code to clipboard

7

Deploy the optimized file for production use with improved performance

Why Choose Us?

Feature
Online JSON Formatt(OJF)
Other Tools
Supported formatsJSON, CSS, JavaScriptSingle format only
Compression efficiencyUp to 40% reduction20-30% typical
Large file supportUp to 15MB1-2MB limit
Size statisticsDetailed metricsBasic info
Data integrityGuaranteed preservationVariable reliability

Frequently Asked Questions