Minificador de JavaScript — Herramienta Gratuita en Línea
Elimina comentarios y espacios innecesarios del código JavaScript.
- Funciona en Tu Navegador
- Resultados Instantáneos
- 100% Privado
What Is a JavaScript Minifier?
This JavaScript minifier removes comments and collapses unnecessary whitespace from JavaScript code to reduce its file size, while deliberately avoiding riskier transformations like variable renaming — it never deletes a newline that could change how automatic semicolon insertion (ASI) interprets your code, such as after a return statement.
It correctly recognizes string literals, template literals and regular expressions so that stripping comments and whitespace never corrupts code that happens to contain characters that look like a comment or division operator inside a string.
¿Quién Usa Esta Herramienta?
Para Empresas
Reduce the size of a small JavaScript snippet before deploying it.
Para Uso Personal
Shrink a personal script for a small website.
Para Estudiantes
Compare formatted vs minified JavaScript for a web performance assignment.
Para Oficinas
Prepare a compact script for an internal tool with size constraints.
Características Clave
Comment & Whitespace Removal
Strips // and /* */ comments and collapses redundant whitespace.
String & Regex Safe
Correctly recognizes strings, template literals and regular expressions.
100% Private
Your code is never uploaded — minification happens entirely in your browser.
One-Click Copy
Copy or download the minified result.
Beneficios
Smaller File Size
Remove comments and extra whitespace to reduce download size.
ASI-Safe by Design
Never merges lines in a way that could change your code's behavior.
Nothing Uploaded
Safe for proprietary code, since nothing leaves your browser.
Cómo Usar Minificador de JavaScript
Paste Your JavaScript
Add commented, formatted JavaScript code.
Read the Minified Result
Comments and extra whitespace are stripped automatically.
Copy or Download It
Use the Copy or Download button to grab the result.
Detalles Técnicos
| Detalle | Valor |
|---|---|
| Entrada | JavaScript source code |
| Procesamiento | No practical limit — handled entirely by your browser |
| Salida | Removes comments and whitespace only — no variable renaming or logic changes |
Privacidad y Seguridad
Lo que realmente sucede con tu archivo al usar esta herramienta.
100% Client-Side
This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.
No Upload, Ever
There is no file upload and no server processing step — your data never leaves your device.
Works Offline
Once this page has loaded, the tool keeps working even without an internet connection.
Nothing Stored
Nothing you enter is saved on our servers — refreshing the page clears everything.
No Tracking of Your Input
We have no way to see what you type, generate or convert with this tool.
Consejos
This Is Not a Full Minifier/Mangler
For maximum compression (variable renaming, dead-code elimination), a dedicated build-tool minifier is still worth using in production pipelines.
Keep a Commented Source Copy
Always keep the original, commented source for future maintenance.
Preguntas Frecuentes
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