Code Formatter

Code Formatter | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Development
Input types: textarea, select, number, checkbox
Output type: text
Sample coverage: 4
API ready: Yes

Overview

The Code Formatter is a professional utility designed to clean up and standardize your source code, ensuring consistent indentation, spacing, and syntax style across various programming and markup languages.

When to use

Standardizing messy code snippets copied from external sources or documentation.
Preparing code for production by ensuring consistent style and readability.
Quickly refactoring indentation and bracket spacing to match team coding standards.

How it works

1Paste your raw code into the input area.
2Select the appropriate programming language from the dropdown menu.
3Adjust formatting preferences like indent size, semicolon usage, and quote styles.
4Click the format button to generate clean, readable, and structured code.

Use cases

Cleaning up minified or unformatted JSON data for easier debugging.
Standardizing CSS or SCSS files to ensure consistent property ordering and indentation.
Formatting Markdown files to ensure lists, headers, and code blocks follow standard conventions.

Examples

1. Standardizing JavaScript for a Project

Frontend Developer

Background

A developer received a legacy JavaScript file with inconsistent indentation and missing semicolons.

Problem

The code is difficult to read and violates the team's style guide.

How to use

Paste the code, select 'JavaScript', enable 'Use Semicolons', and set 'Indent Size' to 2.

language: javascript, indentSize: 2, semi: true, singleQuote: false

Outcome

The code is automatically indented with 2 spaces, all missing semicolons are added, and the structure is clean and compliant.

2. Formatting JSON API Responses

Backend Engineer

Background

An engineer needs to inspect a large, minified JSON response from an API endpoint.

Problem

The minified JSON is a single long line, making it impossible to read or debug.

How to use

Paste the minified JSON string into the input, select 'JSON' as the language, and set the indent size to 4.

FAQ

Which programming languages are supported?

The tool supports a wide range of languages including JavaScript, TypeScript, JSON, CSS, HTML, Markdown, YAML, GraphQL, Vue, Angular, Less, and SCSS.

Can I customize the indentation size?

Yes, you can specify an indent size between 1 and 8 spaces, or choose to use tabs instead.

Does this tool modify my code logic?

No, the formatter only adjusts the visual structure, whitespace, and syntax style; it does not change the functional logic of your code.

Can I choose between single and double quotes?

Yes, you can toggle the 'Single Quotes' option to enforce your preferred quote style throughout the formatted output.

Is my code stored on your servers?

No, all formatting is performed locally in your browser to ensure your code remains private and secure.

language: json, indentSize: 4

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Standardizing JavaScript for a Project

2. Formatting JSON API Responses

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