ByteVerse

Free Developer Tool · No Sign-up

Code Formatter & Beautifier Online

Format, beautify, or minify code online — JSON, HTML, CSS, JavaScript, SQL, and XML with automatic language detection. Paste messy code, get clean readable output, copy in one click. Free and private.

Indent:
0 chars0 lines

How to Format Code Online in 3 Steps

  1. 1

    Paste your code

    The tool auto-detects JSON, HTML, CSS, SQL, or XML — or pick the language manually from the dropdown.

  2. 2

    Format or minify

    Format beautifies with your chosen indent (2 or 4 spaces); Minify compresses for production payloads.

  3. 3

    Copy the result

    One click copies clean output — ready for your editor, code review, or documentation.

6 Languages, One Formatter

The formats developers most often need to clean up fast — no IDE required.

JSON

Format, validate, and minify JSON data — the everyday cleanup for API responses and configs.

HTML

Beautify markup with proper tag indentation — untangle exported or minified pages.

CSS

Clean property alignment and consistent braces for stylesheets.

JavaScript

Indent JS with brace matching — readable code from minified bundles.

SQL

Uppercase keywords and indented clauses — turn one-line queries into readable statements.

XML

Proper nesting for config files, sitemaps, and feeds.

Format vs Minify: When to Use Which

ActionWhat it doesUse it for
FormatAdds indentation and line breaks for readabilityDebugging, code review, learning, documentation
MinifyStrips whitespace and comments for sizeProduction payloads, faster page loads, embeds

Rule of thumb: humans read formatted code, machines ship minified code. Formatting a minified production bundle is also the fastest way to inspect what a site actually ships — a trick worth knowing for debugging and page speed work.

Frequently Asked Questions

How do I format code online for free?

Paste your code above — the tool auto-detects whether it is JSON, HTML, CSS, JavaScript, SQL, or XML, formats it with your chosen indentation, and copies the clean result in one click. Free, no sign-up, no limits.

What languages does this code formatter support?

JSON, HTML, CSS, JavaScript, SQL, and XML — covering the formats developers most often need to clean up quickly outside an IDE.

Is my code safe?

Yes. All formatting runs 100% in your browser — no code is uploaded, stored, or sent to any server, which makes it safe for proprietary and client code.

Can I minify code too?

Yes. The Minify button compresses code by stripping whitespace, comments, and unnecessary characters — the reverse of formatting, useful for production payloads.

Should I use 2 or 4 spaces for indentation?

Both are valid — 2 spaces dominates modern JavaScript/web projects (and this site's code), while 4 remains common in SQL and enterprise codebases. Consistency within a project matters more than the number.

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