Home › Programmer & Developer Tools › Minifier

Minifier

Shrink JavaScript, CSS, HTML, and JSON by stripping whitespace and comments to reduce file size for production.

How to use Minifier

  1. Select the language and paste your code.
  2. Click Minify to compress it.
  3. Copy the minified output and check the size saved.

Frequently asked questions

Does minifying change how my code works?
No. It only removes whitespace and comments; the code behaves identically while taking up less space.
How much smaller will my file be?
It depends on formatting and comments, but minified web assets are commonly 30–70% smaller.

More Programmer & Developer Tools

  • JSON Validator — Validate, parse, and prettify JSON — load it from a URL or curl command, or convert a Python dict (single quotes, True/False/None) to JSON. Identifies syntax errors with precise line number reporting.
  • Code Beautifier — Automatically format your JavaScript, CSS, and HTML with customizable indentation and style rules.
  • SQL Formatter & Beautifier — Pretty-print and indent SQL queries across dialects (PostgreSQL, MySQL, T-SQL, BigQuery, and more) with configurable keyword casing.
  • XML Formatter — Beautify and validate XML with configurable indentation, or minify it to the smallest valid output — entirely in your browser.
  • JSON Diff — Compare two JSON objects (or Python dicts) structurally to spot added, removed, and changed keys — or switch to line and word mode for plain text and code.
  • RegEx Tester — Build and test regular expressions in real-time with syntax highlighting and match group visualization.
  • Base64 Converter — Quickly encode and decode strings or files to Base64 format for safe data transmission.
  • URL Encoder / Decoder — Percent-encode or decode text, URLs, and query strings — with batch line mode and a parsed parameter breakdown.