Developer
HTML Minifier
Shrink HTML by removing comments, collapsing whitespace, and stripping noise — without breaking the contents of <pre>, <textarea>, <script>, or <style>. Reports byte savings instantly.
Developer
JavaScript Minifier
Compact JavaScript by stripping comments and collapsing safe whitespace — with strings, template literals, and regex literals preserved exactly. Runs in your browser, no upload.
Tool Summary Answer Block
This tool accepts structured input and returns deterministic output in the browser with no server upload.
- Tool name
- JavaScript Minifier
- Input intent
- Provide source content to transform, validate, or analyze.
- Output intent
- Receive normalized output suitable for copy, reuse, or debugging.
- Example input
- // say hi function hi(name) { return `Hello, ${name}!`; }
- Example output
- function hi(name){return `Hello, ${name}!`;}
Original242 B
Minified163 B
Saved79 B
Reduction32.6%
Strings, template literals, and regex are preserved exactly. No identifiers are renamed.
Tool Introduction
Compact JavaScript by stripping comments and collapsing safe whitespace — with strings, template literals, and regex literals preserved exactly. Runs in your browser, no upload.
Tool Overview
This is a lightweight, conservative JavaScript minifier. It walks your source one token at a time, leaving every string, template literal, and regular expression untouched while removing line and block comments and shrinking runs of whitespace where it is safe to do so. It does not rename identifiers, shorten property accesses, or perform tree-shaking — for that you want a full bundler. What it does well is compressing snippets, examples, inline scripts, and configuration code without changing their behavior.
Use Cases
- Inline a small snippet into HTML where every byte matters.
- Quickly minify a code sample for a documentation page or blog post.
- Pre-process configuration scripts before piping them into a CMS field.
Input/Output Examples
Input Intent
// say hi
function hi(name) {
return `Hello, ${name}!`;
}Output Intent
function hi(name){return `Hello, ${name}!`;}FAQ
Does it rename variables (mangle)?+
No. This is a whitespace-and-comments minifier only. For mangling, dead code elimination, and bundling, use a tool like esbuild, terser, or swc.
Will it break template literals or regex?+
No. The tokenizer recognizes ', ", `, /…/ and template ${} interpolation, and never modifies their contents.
Is automatic semicolon insertion (ASI) handled?+
The minifier preserves newlines that matter for ASI by inserting a single space rather than gluing tokens together where it cannot safely do so.
Explore More Tools
Discover related utilities in the Developer category below.
Related tools
Handpicked utilities you might find useful
Developer
CSS Minifier
Compress CSS by stripping comments, collapsing whitespace, and removing redundant semicolons. Outputs production-ready CSS with byte savings reported.
Developer
JSON Minifier
Strip whitespace from JSON to produce the smallest valid payload. Reports savings in bytes and percentage so you can see the impact instantly.