HTML Formatter
Messy, unindented code is hard to read and debug. This free formatter instantly beautifies, indents, or minifies HTML, CSS, and JavaScript — just paste your code and it automatically detects whether it's HTML, CSS, or JavaScript and switches the language tab for you.
How It Works
Get Your Result in 4 Simple Steps
Get a clean, usable result in just a few clicks — fast, easy, and completely free.
1
Paste Your HTML, CSS, or JS Code
Copy your raw, minified, or unformatted markup, stylesheet, or script into the input editor — it works whether your code came from a bundler, a CMS export, or a colleague's single-line snippet. The tool automatically detects which language you pasted and switches to the matching tab.
2
Pick a Language Tab, Then Format or Minify
Switch to the HTML, CSS, or JavaScript tab to match your code, then choose Format to beautify it or Minify to compress it, and select your preferred indentation — 2 spaces, 4 spaces, or a tab character.
3
Process Your Markup
Click the format button and the parser restructures your HTML instantly, aligning nested tags and attributes without changing how the page actually renders.
4
Copy or Download the Result
Copy your newly formatted HTML straight to your clipboard, or download it as a ready-to-use .html file for your project.
Features
Everything You Need in One Tool
Built to be fast, clean, and easy to maintain — with no messy lines or hard-to-spot errors.
Formats HTML, CSS & JavaScript
One tool, three languages — paste your code and it automatically detects HTML, CSS, or JavaScript and switches tabs for you, no manual selection needed.
Customizable Indentation
Tailor code styling to match your preferred development standards using 2-space or 4-space indent rules.
Minified Code Support for All 3 Languages
Unpack compressed or single-line HTML, CSS, or JavaScript into clean, structured, multi-line code effortlessly.
Client-Side Data Privacy
Maintain total confidentiality as all code processing runs locally inside your browser without saving server records.
Common Use Cases
Who Is This Tool For?
Whether you're working on a personal project or a professional one, this tool fits right in.
-
Web Developers Cleaning Up Legacy Code
You've just inherited a project where every file is a single unindented line. Paste it in, format it, and suddenly you can actually read what you're debugging. -
Students Learning HTML Structure
Seeing properly nested, indented markup makes it far easier to understand how tags relate to each other than staring at a flat wall of code from a tutorial. -
Agencies Preparing Client Handoffs
Before delivering a finished site's source files to a client or another developer, run the markup through the formatter so the handoff looks professional and is easy to maintain. -
Bloggers Fixing Copy-Pasted Snippets
Code copied from forums, ChatGPT, or old Stack Overflow answers often arrives compressed or oddly spaced. Clean it up before pasting it into your CMS's code block.
Why It's Useful
Small Changes. Big Difference.
A little polish goes a long way — it saves time, reduces mistakes, and makes your work look more professional.
Match Your Team's Indent Style
Most modern JavaScript-heavy projects use 2-space indentation, while many older HTML/CMS codebases use 4 spaces or tabs. Set the indentation size before formatting so the output matches your team's existing style guide.
Format Before You Commit
Running your code through the formatter before every git commit keeps whitespace-only changes out of your diffs, so pull requests stay focused on the actual logic that changed.
Keep a Readable Copy, Minify Only for Production
Store the formatted, readable version in your source repository and only minify the version you actually deploy. Minified code is faster to load but painful to debug later.
Double-Check Inline Event Handlers After Reformatting Old Code
Legacy markup with attributes like onclick or onload still works after formatting, but it's a good moment to flag them for cleanup since modern HTML favors separate JavaScript event listeners.
FAQs
Frequently Asked Questions
Find answers to the most common questions about this tool.
It restructures your markup's whitespace and indentation — lining up nested tags, adding line breaks, and applying consistent spacing — so the underlying HTML is easier for a developer to read, without changing how the page looks or behaves in a browser.
Yes — paste in a compressed, single-line HTML string and this HTML formatter expands it into properly indented, multi-line code, which is useful when you're inspecting a page's source, debugging a template, or reviewing a bundler's compiled output.
No. Formatting only changes indentation and line breaks in the underlying code — the rendered page, its layout, and its styling stay exactly the same for anyone visiting the site.
Yes — switch to the Minify tab to strip out unnecessary whitespace and line breaks, which shrinks the file size for faster page loads in production.
No. All formatting and minifying happens locally in your browser, so the markup you paste — including any private or unreleased code from a client project — is never transmitted to or saved on our servers at any point during processing.
No practical limit — paste a small snippet or an entire page's markup, and the formatter processes it instantly, free, with no signup required, no matter how many times you need to reformat it during a session.
Yes. Before formatting, open the indentation dropdown and pick 2 spaces, 4 spaces, or a tab character — the output is then re-indented to match your team's coding standards instead of a fixed style.
Yes. Switch to the CSS or JavaScript tab to beautify or minify those languages the same way as HTML, using the same 2-space, 4-space, or tab indentation options — all in the same free tool, no sign-up needed.
No. Paste your code and the tool automatically detects whether it's HTML, CSS, or JavaScript and switches to the matching tab for you. You can still switch tabs manually anytime if you prefer a different language.
This tool covers HTML, CSS, and JavaScript only. For JSON specifically, use ToolFlexy's dedicated JSON Formatter tool, which validates and pretty-prints JSON with its own indentation controls.
Ready to Get Started?
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Free, fast, and no sign-up required — give it a try in seconds.
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