Format, beautify, and minify HTML code online. Free HTML formatter with indentation control, syntax cleanup, and instant pretty-printing for developers.
Minified HTML is everywhere. View source on any production page and you get a wall of tags crammed onto a single line. Template engines, build tools, and CDN optimizations strip every newline and indent before the markup reaches the browser. That is fine for performance. It is terrible for anyone trying to read the code.
Tracking down a broken layout, a missing closing tag, or a misplaced attribute inside minified markup is like reading a novel with no paragraph breaks. You can do it, but it costs time you should not be spending. An HTML formatter adds the structure back: proper indentation, one tag per line, nested elements indented consistently.
This tool runs in your browser so you can paste raw markup from any source, hit Beautify, and see the structure immediately. No signup, no server upload, no waiting.
An HTML formatter (also called an HTML beautifier or HTML prettifier) takes markup and rewrites it with consistent indentation and line breaks. The DOM structure stays the same. The visual layout stays the same. Only the source code becomes readable.
Most formatters let you choose the indent style: two spaces, four spaces, or tabs. Some also handle the reverse operation, called minification, which strips whitespace to produce the smallest possible output. This tool does both.
If you work with API responses, scraped pages, email templates, or build artifacts, you already know that readable markup is not a luxury. It is the difference between a five-second inspection and a twenty-minute hunt.
Beautify to pretty-print the markup with proper nesting.Minify if you need a compact single-line version instead.The character and line counts update in real time so you can see exactly how much the formatting changed the output. That is useful when you want to compare the minified size against the readable version.
Beautifying and minifying are opposite operations on the same source. Developers need both at different stages of a workflow.
| Operation | What it does | When to use it |
|---|---|---|
| Beautify | Adds indentation, line breaks, and consistent nesting. | Debugging, code review, documentation, comparing structures. |
| Minify | Strips whitespace, comments, and unnecessary characters. | Reducing payload size, embedding in scripts, production builds. |
A common workflow: minified HTML arrives from a production page or API. You beautify it to inspect the structure, find the issue, then minify the corrected version before shipping it back. This tool handles both steps without switching between different utilities.
Indentation is one of those small choices that causes surprisingly strong opinions. Here is what each option actually means in practice.
| Style | Characters per level | Best for |
|---|---|---|
| 2 spaces | 2 | Deep nesting, narrow editors, most frontend conventions. |
| 4 spaces | 4 | Wider monitors, teams coming from Python or Java conventions. |
| Tab | 1 (rendered at editor width) | Accessibility (users control visible width), smaller file size. |
Two spaces is the most common default in frontend tooling. If you are not sure, start there. This tool lets you switch between all three without re-pasting your input.
Formatting errors are not just cosmetic. They can mask real structural bugs. Here are the issues developers hit most often.
<div> elements add nesting without purpose, making the source harder to navigate.Pasting markup into this tool and hitting Beautify makes most of these problems visible immediately. Consistent indentation exposes missing tags and unnecessary nesting that minified output hides.
Most code editors have a built-in formatter. VS Code uses Prettier or the built-in HTML formatter. JetBrains IDEs have their own. So why use a standalone HTML beautifier online?
| Approach | Strength | Tradeoff |
|---|---|---|
| Online HTML formatter | Instant, no setup, paste and go. Works from any device. | No project-level config or file save integration. |
| Editor formatter | Integrated into your workflow with format-on-save. | Requires project setup, config files, sometimes extensions. |
| CLI tool (Prettier, Tidy) | Scriptable, works in CI pipelines, batch formatting. | Overkill for inspecting a single snippet quickly. |
Use this tool when you need to format HTML fast without context-switching out of what you are doing. If you are debugging a production page, inspecting scraped output, or reviewing a template someone sent you, pasting into a dedicated formatter is faster than opening a project.
Browser automation tools and scraping pipelines return raw HTML constantly. Whether you are capturing a full page, extracting a specific section, or logging the DOM state after an interaction, the markup you get back is almost always unformatted.
That is where a quick format step matters. Paste the output into this tool, beautify it, and you can see the structure of what your automation actually captured. Missing elements, unexpected wrappers, and broken nesting become obvious in seconds.
If you are building automation with Browserbeam's browser API, you already get structured data back. But when you need to inspect the raw HTML underneath, this formatter is the fastest way to make it readable.
HTML minification removes whitespace, line breaks, and optional characters from markup to reduce file size. The browser renders the result identically, but the source becomes nearly unreadable to humans.
Production sites minify HTML as part of their build pipeline to improve page load speed. According to web performance best practices, smaller HTML documents mean faster time-to-first-byte and quicker parsing. The tradeoff is that debugging production markup requires a beautifier to reverse the process.
This tool handles that round-trip. Beautify to read, minify when you are done.
An HTML formatter takes raw or minified markup and rewrites it with consistent indentation and line breaks. The DOM structure does not change. Only the source code becomes easier to read and scan visually.
Paste your HTML into the input panel on this page, choose an indent style (2 spaces, 4 spaces, or tabs), and click Beautify. The formatted output appears instantly in the right panel. No signup or installation needed.
Pretty-printing HTML means adding indentation so nested elements are visually offset from their parents. This tool pretty-prints HTML by parsing the tag structure and inserting the correct indent level at each depth.
Beautifying adds whitespace for readability. Minifying removes it for compactness. They are opposite operations. Beautify when you need to read the code. Minify when you need to ship it.
Yes. This tool processes everything locally in your browser. Your HTML is never sent to a server. That makes it safe for internal templates, staging page markup, or any content you would rather not share with a third-party service.
Paste your HTML into the input panel and click Minify. The tool strips comments, collapses whitespace between tags, and produces a compact single-line version. This reduces file size for production delivery.
Yes. HTML email templates often arrive as a single minified line. Paste the email markup into this tool, beautify it, and you can inspect the table-based layouts, inline styles, and nested structures that email clients require.
Two spaces is the most common convention in frontend development and the default in most formatters. Four spaces works if your team follows wider indentation standards. Tabs let each developer control the visual width in their own editor.
Structured page data instead of raw HTML. Your agent processes less, decides faster, and costs less to run.