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Minify HTML code online by removing spaces, comments, and redundant characters. Optimize CSS, JS, and SVG to reduce file size.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
Paste an HTML fragment or document and the minify mode produces a compact text output. It applies three broad text replacements: runs of whitespace become one space, whitespace between a closing and opening tag is removed, and HTML comments are deleted; leading and trailing whitespace is trimmed. This is a lightweight way to make some pasted markup shorter. It does not parse HTML structure or offer separate controls for these transformations.
HTML has text contexts where whitespace is visible or part of a value. For example, removing the space between two inline elements can join words, and collapsing whitespace inside a <pre> block or a script string can alter what the page displays or runs. The HTML Standard describes whitespace and comments in specific parsing contexts, so a global text replacement should not be assumed to preserve every document's behavior. This page does not separately minify CSS, JavaScript, or SVG embedded in the input.
The input and output panels show character counts and a percentage calculated from their string lengths. That percentage is not a measurement of encoded file bytes or network transfer savings. You can copy the output or download it as a text file after reviewing it.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Paste a copy of your markup into the input panel. The example control can load a basic HTML document if you want to see the input and output format.
Choose the minify mode. As you edit the input, the page processes it automatically; the whitespace and comment rules are applied together.
Compare the result with the original, paying close attention to text between inline tags, preformatted text, and script or style content. Preview the result in the intended page or template.
When it checks out, copy the output or download the text file. Keep the source version so you can restore or revise it later.
For instance, <span>red</span> <span>blue</span> contains a separating space between the two inline elements. Removing whitespace between tags can make the rendered text run together. Decide whether that gap is meaningful before using the output.
Use cases
See how the tool fits into real work and everyday tasks.
If you are pasting a simple fragment into a lesson, issue report, or CMS field, minification can remove indentation and comments. Preview it in the destination first, especially if the fragment contains inline text.
For a quick before-and-after comparison, inspect the character counts and displayed percentage. Treat them as string-length figures; measure the saved file in bytes separately if file size is what you need.
Q&A
Find concise answers to common questions and confusing cases.
No. It applies the same whitespace and comment replacements to the whole input; it does not analyze or optimize those languages separately.
The replacements do not distinguish ordinary markup from whitespace-sensitive text or code strings. Compare the affected area with your source and test the result in context; use a syntax-aware process for content that depends on exact whitespace.
It is based on input and output string lengths. Character encoding and file representation affect byte size, so the percentage is not a byte-for-byte file or transfer measurement.
Notes
Review scope, result limitations, and important precautions before use.
Whitespace and comments can affect content in context; a shorter string is not proof of equivalent rendering or behavior.
Retain the original and inspect inline text spacing, pre or textarea contents, scripts, and styles. Test the output in a staging page or the actual template before replacing source markup. For production code that needs predictable transformations, use a process that understands the relevant HTML, CSS, and JavaScript syntax.
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