Formatters & Beautifiers

Clean up messy JSON, XML, HTML, CSS, JS, and SQL into readable, indented output.

Formatters take code or data that’s been minified, scraped, or hand-edited into an unreadable mess and turn it back into something a human can actually scan - correct indentation, consistent brace placement, one property or element per line, without changing a single byte of the underlying logic or structure. Reach for one of these instead of eyeballing a wall of text when you’re debugging a production API response, reviewing someone else’s minified CSS, or trying to understand a third-party script before you trust it. Every formatter runs entirely in your browser using well-tested beautification engines rather than a hand-rolled regex, so the reformatted output is safe to paste back into real code - nothing you paste is ever sent anywhere.

32 tools in this category

BBCode Editor & Preview

Write BBCode with a formatting toolbar and see a safe, live rendered preview.

CSS Formatter & Beautifier

Beautify minified or messy CSS into readable, properly indented output.

CSS Minifier

Strip comments and collapse whitespace in CSS to shrink stylesheet size before shipping it.

CSS Validator

Check CSS for structural issues like unclosed rules, using the browser’s own CSS parser.

CSV Viewer

Paste CSV and see it rendered as a readable table instantly, in your browser.

Excel Viewer

View an .xlsx or .xls spreadsheet as a table, right in your browser.

GraphQL Formatter

Format and validate GraphQL queries, mutations, and schemas.

HTML Formatter & Beautifier

Beautify minified or messy HTML into properly nested, readable markup.

HTML Minifier

Strip comments and collapse whitespace in HTML to shrink file size before shipping it.

HTML Viewer & Live Preview

Preview HTML with a responsive viewport switcher, live console output, and basic error linting.

Java Formatter & Beautifier

Reformat Java source with consistent brace placement and indentation.

JavaScript Formatter & Beautifier

Beautify minified or messy JavaScript into properly indented, readable code.

JavaScript Minifier

Strip comments and collapse whitespace in JavaScript, safely, without touching your logic.

JSON Formatter & Validator

Beautify, validate, and minify JSON instantly in your browser.

JSON Repair Tool

Fix common JSON syntax mistakes automatically and see exactly what was changed, all client-side.

JSON Tree Viewer

Explore JSON as a collapsible, color-coded tree instead of a flat formatted block - rendered entirely in your browser.

JSON5 Validator

Validate JSON5 - comments, trailing commas, unquoted keys, single-quoted strings - and see the equivalent strict JSON.

LESS Compiler

Compile LESS (variables, nesting, mixins) into plain CSS instantly in your browser.

LESS Formatter

Reformat LESS source for readability - indentation and brace placement - while keeping it as LESS.

Markdown Editor

Write Markdown with a live, sanitized HTML preview side by side.

PHP Formatter

Beautify PHP code with consistent indentation and brace placement.

RSS Viewer

Parse a pasted RSS 2.0 feed into a readable channel/item view or a JSON representation.

SASS Compiler

Compile indented-syntax Sass (no braces or semicolons) into plain CSS in your browser.

SCSS Compiler

Compile SCSS (variables, nesting) into plain CSS instantly in your browser.

SCSS Formatter

Beautify SCSS source (indentation, brace placement) while keeping it as SCSS.

SQL Formatter

Format SQL with a real parser - keyword casing, clause breaks, and dialect support.

XML Formatter & Validator

Beautify and check XML for well-formedness instantly in your browser.

XML Minifier

Strip indentation whitespace from XML while preserving mixed-content text exactly.

XML Parser

Browse XML as a real, expandable element/attribute/text hierarchy.

XPath Tester

Run an XPath expression against XML and see matched nodes, using the browser’s native evaluator.

YAML Formatter & Validator

Validate and re-format YAML into consistent, cleanly indented output.

YAML Parser

Parse YAML into a real, browsable structure - the JSON-equivalent shape of your data.