U
UtilLab

Beautify & Minify

Format, validate, and minify your code instantly.

Code Formatter & Beautifier

Format and clean up CSS, JS, HTML, or SQL code instantly

Source Code Input
0 chars | 0 lines
Formatted Result
Output Ready HTML Mode

Developer Tools

Diff Checker

Compare text differences

JSON Formatter

Beautify JSON instantly.

CSS Formatter

Beautify CSS code.

HTML Formatter

Beautify CSS code.

Words Counter

Count words and chars

JSON Minifier

Compress JavaScript code

CSS Minifier

Compress CSS code.

HTML Minifier

Compress HTML code

Date & Time Converter Tools

Multi-Timezone Converter

Convert and synchronize dates/time

Unix Timestamp Converter

Unix timestamp inspection & converter

JSON Timestamp Formatter

Extract timestamp from JSON payload

Time Difference Calculator

Find the difference between two dates

Cron Timezone Converter

Translate a server UTC cronjob into your local timezone equivalent
ast.format(syntax, config)

How Code Formatting & Minification Works

Deterministic AST tokenization and byte-stripping algorithms running 100% in-browser for JSON, SQL, HTML, and CSS.

01 // PARSE

Tokenize & Validate

Paste raw code or minified strings. Lexical parsers construct an Abstract Syntax Tree (AST), checking for unclosed tags, bad quotes, or syntax bugs.

Instant error line tracing
02 // TRANSFORM

Beautify or Compress

Select your 2/4-space indentation and keyword capitalization rules to beautify, or strip comments, dead whitespace, and redundant characters to minify bytes.

Tracks payload reduction %
03 // EXPORT

Copy or Stream File

Copy the clean tree to your clipboard in a click or download production-ready `.json`, `.css`, `.html`, or `.sql` files without watermarks.

1-click raw clipboard copy

Privacy First: Formatted code & queries remain strictly inside browser memory.

Local Worker Active

Explore Categories

Finance

GST Calculator, Loan & EMI Calculator

PDF Tools

Edit, convert & organize PDFs.

Image Tools

Resize, compress & convert images.

Dev Tools

Code, debug, test & build faster.

Health Tools

Health calculators and trackers.

Frequently Asked Questions

What is code minification on Utillab?

Code minification on Utillab strips away all unnecessary characters—such as spaces, tabs, and comments—from your JSON, HTML, CSS, and SQL files without altering their execution logic.

How does JSON compression work in Utillab?

Utillab's JSON minifier removes all formatting spaces and line breaks, producing a compact single-line string ideal for lightweight API payloads and data storage.

Why should I minify HTML and CSS with Utillab?

Minifying HTML and CSS reduces file size, decreases bandwidth consumption, and helps your web pages load faster for end users.

Can I compress SQL queries on Utillab?

Yes, Utillab lets you compress lengthy multi-line SQL queries into optimized, single-line strings that are easy to embed inside backend application code.

Can minified code on Utillab be restored?

Yes, if you ever need to read or edit minified code again, you can simply paste it back into Utillab and use the Beautifier tool to instantly restore proper indentation.