What's the difference between beautify and minify?

Beautify (pretty-printing) reformats code with consistent indentation and line breaks so it's easy for a human to read. Minify does the opposite: it strips comments, extra whitespace, and line breaks to make the file as small as possible for production delivery. The two are complementary — you might beautify code while editing it, then minify before shipping.

Is this safe to use for minifying production code?

Treat it as a lightweight, best-effort minifier rather than a production build tool. It does not parse code into a full syntax tree the way tools like Terser, esbuild, or clean-css do — it uses careful text-based rules (protecting strings, template literals, and comments before touching whitespace) to shrink typical HTML, CSS, and JS safely. For most everyday snippets it works well, but for large, complex JavaScript bundles with tricky regex literals or unusual syntax, a dedicated bundler-based minifier will be more reliable. Always keep your original source and test minified output before deploying it.

Which languages does it support?

HTML, CSS, and JavaScript. For HTML, any and blocks inside the markup are automatically beautified or minified using the same JS/CSS logic, so you don't need to process them separately.

Is my code uploaded anywhere?

No. Everything runs locally in your browser with plain JavaScript — your code is never sent to a server, logged, or stored.

How large a file can it handle?

It runs entirely in-browser using regular JavaScript string processing, so it comfortably handles typical snippets and files up to a few hundred KB. Very large files (multi-MB minified bundles or huge HTML documents) may feel slow since there's no background worker or streaming — for those, a build-time tool is a better fit.

CODE BEAUTIFIER & MINIFIER

Pretty-print or minify HTML, CSS, and JavaScript with live character-count savings. Runs entirely in your browser — nothing is uploaded.

Input (173 chars)

Output (302 chars)

<!DOCTYPE html>
<html>
  <head>
    <title>
      Demo
    </title>
    <style>
      .card {
        color:#333;
        padding:12px
      }
    </style>
  </head>
  <body>
    <div class="card">
      <p>
        Hello
        <b>
          world
        </b>
      </p>
    </div>
  </body>
</html>

How to use the code beautifier & minifier

1
Choose a language — HTML, CSS, or JavaScript.
2
Choose Beautify to pretty-print and indent your code, or Minify to strip comments and whitespace.
3
Paste or type your code into the left box — the formatted result appears instantly on the right.
4
Copy the output with one click.

Questions

What's the difference between beautify and minify?: Beautify (pretty-printing) reformats code with consistent indentation and line breaks so it's easy for a human to read. Minify does the opposite: it strips comments, extra whitespace, and line breaks to make the file as small as possible for production delivery. The two are complementary — you might beautify code while editing it, then minify before shipping.
Is this safe to use for minifying production code?: Treat it as a lightweight, best-effort minifier rather than a production build tool. It does not parse code into a full syntax tree the way tools like Terser, esbuild, or clean-css do — it uses careful text-based rules (protecting strings, template literals, and comments before touching whitespace) to shrink typical HTML, CSS, and JS safely. For most everyday snippets it works well, but for large, complex JavaScript bundles with tricky regex literals or unusual syntax, a dedicated bundler-based minifier will be more reliable. Always keep your original source and test minified output before deploying it.
Which languages does it support?: HTML, CSS, and JavaScript. For HTML, any <script> and <style> blocks inside the markup are automatically beautified or minified using the same JS/CSS logic, so you don't need to process them separately.
Is my code uploaded anywhere?: No. Everything runs locally in your browser with plain JavaScript — your code is never sent to a server, logged, or stored.
How large a file can it handle?: It runs entirely in-browser using regular JavaScript string processing, so it comfortably handles typical snippets and files up to a few hundred KB. Very large files (multi-MB minified bundles or huge HTML documents) may feel slow since there's no background worker or streaming — for those, a build-time tool is a better fit.