Format, Generate,
Convert.

Yes — PureFormatter is 100% free with no usage limits, no paywalls, and no signup required. There are no hidden fees or premium tiers; every feature is available to every visitor. We believe code formatting is a fundamental utility that should be freely accessible to developers everywhere. We are committed to keeping PureFormatter free for the long term, supported by our passion for open developer tooling.

Absolutely not — all formatting, validation, and minification runs entirely inside your browser using JavaScript. Your code never leaves your device, not even for a millisecond. We do not collect, log, or transmit any of the code you paste into PureFormatter. This privacy-first architecture means you can safely format sensitive configuration files, API keys, proprietary business logic, and any other confidential content without any risk.

PureFormatter currently supports JSON, HTML, CSS, JavaScript, SQL, and XML — the six most widely used web development formats. Each formatter includes beautification, validation, and minification capabilities tailored specifically to the syntax rules of that language. We are actively working to expand support for TypeScript, YAML, GraphQL, Markdown, and TOML in upcoming releases. If there is a language you would like to see added, feel free to reach out via our contact page.

Yes, minification is fully supported for all six languages available on PureFormatter. Simply paste your code, then click the Minify button in the toolbar instead of the Format button to produce a compact, whitespace-free version ready for production deployment. Minified output can dramatically reduce file sizes, which improves page load times and reduces bandwidth costs. The minifier is designed to preserve full functional correctness while stripping every unnecessary character.

Yes — PureFormatter performs syntax validation as part of the formatting process and highlights any errors it encounters directly in the status bar below the output panel. For JSON, it will pinpoint the exact line and character position of a syntax mistake, making it easy to locate and fix the problem. For HTML and CSS, it flags malformed tags and declaration blocks. Validation happens instantly as soon as you click Format, with no additional steps required.

No account, registration, or login is ever required to use PureFormatter. You can open the site and immediately start formatting code without providing any personal information whatsoever. We intentionally designed PureFormatter to be frictionless — just open, paste, and format. Your theme preference (light or dark mode) is the only piece of data we save, and it is stored locally in your browser's localStorage so it persists between visits without any server involvement.

PureFormatter includes a fully implemented dark mode that you can toggle instantly using the moon or sun icon in the top navigation bar. Your theme preference is automatically saved to your browser's local storage so the next time you visit, the site remembers your choice without needing an account or cookie consent. The dark theme applies not only to the UI chrome but also to the syntax highlighting colours inside the editor and output panels. Both themes have been carefully designed for comfortable long-session use with strong contrast ratios that meet accessibility standards.

Yes — PureFormatter is fully responsive and works on smartphones, tablets, and desktops alike. The interface adapts to smaller screens with a collapsible navigation menu and a stacked single-column editor layout that makes formatting code on the go practical. While a physical keyboard will always provide the best code-editing experience, the tool is completely functional with touch input as well. We regularly test on a range of screen sizes and mobile browsers to ensure a consistent experience across devices.

PureFormatter lets you choose between two-space, four-space, and tab-based indentation using the indent selector in the toolbar above the editor panels. The setting is applied globally so your preference is respected every time you format within the same session. Different teams and style guides have different conventions, and we wanted to make sure PureFormatter accommodates them all without requiring you to manually reformat. Simply change the indent option and click Format again to reformat the current code with your new preference.

The defining difference is privacy — most online formatters send your code to a remote server for processing, which is a significant security concern for proprietary or sensitive codebases. PureFormatter processes everything locally in your browser, so there is no server, no logs, and no data exposure. We also prioritise speed and simplicity: there are no ads cluttering the interface, no forced account creation, and no artificial feature limits designed to push you toward a paid plan. PureFormatter is purpose-built to be the fastest, most trustworthy formatting tool available on the web.