How to beautify code
Paste your code into the input pane on the left and the beautified version appears on the right as you type — there is no button to press. The tool guesses whether you pasted HTML, CSS or JavaScript, but if the guess is wrong you can force the language with the selector. Set the indentation to 2 spaces, 4 spaces or a tab to match your project, then copy the result with one click or download it as a file with the right extension. Everything runs in your browser; nothing is uploaded.
Why beautify code at all?
Code arrives ugly more often than you would like. A production bundle is minified to a single line; a snippet copied from a chat or a stack trace loses its indentation; a colleague's file uses a brace style that fights your editor. In every case the logic is fine but the shape is unreadable, and unreadable code is slow to review, hard to debug and easy to get wrong. Beautifying restores a consistent, canonical layout — one statement per line, nested blocks indented, spacing normalised — so you can actually see the structure you are working with.
Consistent formatting also makes version control honest. When a file is committed in a canonical shape, a diff shows the real change instead of a whitespace reshuffle, and reviewers can focus on behaviour. Beautifying a third-party snippet before you paste it into your codebase means it lands already matching your house style. Because this tool is deterministic, the same input and the same options always produce identical output, which is exactly what you want from a formatting step.
Three languages, automatic detection
The beautifier handles the three core front-end languages, each with its own rules. JavaScript mode understands functions, objects, arrays, template literals and modern syntax, and it also pretty-prints JSON correctly since JSON is a subset of JavaScript object notation. CSS mode puts each declaration on its own line, splits comma-separated selectors and normalises spacing around braces and colons. HTML mode indents nested elements and lays out attributes cleanly, giving you a readable document tree.
Auto-detect inspects what you paste: markup that starts with a tag is treated as HTML, rule blocks of selector { property: value } without programming keywords are treated as CSS, and everything else is treated as JavaScript. The heuristic is right the vast majority of the time, and the language selector is always there for the edge cases — a CSS-in-JS fragment, or an HTML template embedded in a string. Whatever you choose, the indentation control applies the same way across all three.
Beautifying preserves behaviour
A beautifier must change how code looks without changing what it does. This tool only adjusts whitespace and line breaks: it does not rename identifiers, reorder statements, drop code, or rewrite expressions. Comments are kept, string contents are untouched, and the token stream is preserved. The result is code that is guaranteed to behave identically to what you pasted — just laid out so a human can read it. That also makes it a reliable way to un-minify a bundle: paste a single-line script and you get expanded, indented source back, restoring structure (though not the original variable names, which minification discards permanently).
Why a local beautifier matters
The code developers most want to clean up is often the code they can least afford to leak: proprietary application source, an unreleased feature, a vendor bundle under licence, or a snippet that happens to contain an API key or internal URL. Pasting any of that into an online beautifier ships it to a server you do not control, where it may be logged or cached. For many teams that is a policy breach before it is anything else.
This tool removes the risk entirely. The beautifying engine is a bundled JavaScript library that runs inside your own browser tab — no network request when you format, no logging, no account. Close the tab and everything you pasted is gone. That is the gitime.dev approach across the board: deterministic, dependency-light developer tools that keep your data on your machine, because formatting code never needs to leave your device to happen.
- Three languages: HTML, CSS and JavaScript (plus JSON via JS mode).
- Auto-detect with a manual override selector.
- Configurable 2-space, 4-space or tab indentation.
- Behaviour-safe: only whitespace changes, never the logic.
- Everything stays on your device — no upload, no logging.
Frequently asked questions
- Is my code uploaded anywhere?
- No. Beautifying runs in your browser with a bundled copy of js-beautify. Nothing is transmitted.
- Which languages can it beautify?
- HTML, CSS and JavaScript, with auto-detection and a manual override. JSON works through JavaScript mode.
- Does beautifying change what my code does?
- No. Only whitespace and indentation change; identifiers, logic and string contents are preserved.
- Can it un-minify a bundle?
- Yes. Minified CSS or JS is expanded into readable code; structure is restored, original names are not.