Ready to Execute
Click the blue ▶ Run button in the header bar or press Ctrl + Enter to compile and preview your results.
About HTML Formatter — Free Online Tool
HTML Formatter re-indents markup so every tag sits at its nesting depth, at an indent of one to eight spaces.
Tags and attributes come through exactly as written — nothing is renamed, reordered or dropped — and void elements such as <br>, <img> and <meta> correctly do not open a new level. Whitespace sitting between tags is collapsed before the re-indent, which is what makes the result uniform but also means a <pre> or <textarea> block will not come back with its original spacing. Indentation is spaces only; there is no hard-tab option, and input with no tags at all is refused instead of being echoed back.
The markup is re-indented inside the page, so a template carrying customer data or an internal hostname is never transmitted.
Reading a page source saved out of the browser, tidying a template fragment before editing it, spotting where a tag was left unclosed, and making an HTML email readable.
Also known as: beautify html · format html code · clean html markup · prettify html · pretty print html
When to use it
Clean up minified page sources, template snippets, and emails for easy reading and editing.
How it works
Builds an element hierarchy and indents closing tags according to nesting depth.
Inline Script & Style Formatting
Also formats embedded <style> and <script> blocks cleanly.
How to Use HTML Formatter in 4 Easy Steps
Follow this simple guide to process your files in seconds directly inside your browser tab.
Provide Input for HTML Formatter
Paste your payload, code snippet, or string into the HTML Formatter editor workspace. HTML lexical analyzer that structures markup tags into properly indented nesting levels.
Configure Formatting & Validation Rules
Select indentation preferences, minification, encoding options, or validation rules. Clean up minified page sources, template snippets, and emails for easy reading and editing.
Run In-Browser Engine
The engine executes HTML Formatter locally in your browser with microsecond latency and zero server transmission.
Copy or Download Output
Copy the sanitized, formatted, or generated output directly to your clipboard or download it for your project.
Why Use HTML Formatter on ShortTrick
Engineered for maximum speed, strict privacy, and frictionless digital productivity.
Zero Code or Token Leaks
Proprietary source code, API keys, database queries, and tokens processed in HTML Formatter never leave your browser.
Microsecond Performance
Optimized AST parsers and Web Crypto APIs process large payloads in HTML Formatter in milliseconds.
No Paywall or Account
Built for developers to use HTML Formatter instantly without sign-up friction or rate limits.
Syntax Validation & Formatting
HTML Formatter highlights syntax errors and enforces standard formatting conventions automatically.
Offline Ready
Once loaded, HTML Formatter functions entirely offline without requiring an active internet connection.
Dark Mode Optimized
High-contrast typography designed for effortless reading during coding sessions.
Frequently Asked Questions About HTML Formatter
Common questions regarding HTML Formatter, data privacy, file format compatibility, and usage limits.
Related Developer Tools Tools & Popular Utilities
Explore complementary browser-based tools with zero file uploads and instant in-memory execution.
More Developer Tools Tools
Popular Tools Across Other Categories
Related Reading & Tutorials
Guides, articles, and best practices for developer tools workflows.