Does this rename variables like a full minifier would?

No — this tool only removes comments and unnecessary whitespace; it deliberately avoids variable renaming and other logic-affecting changes.

Could this break my code's behavior?

It is specifically designed to avoid the common ASI (automatic semicolon insertion) hazard by never deleting a newline that separates two statements.

Is my code uploaded anywhere?

No — minification happens entirely in your browser.

Does it handle regular expressions correctly?

Yes — it uses a heuristic based on the preceding token to distinguish a regex literal from a division operator, matching common real-world code patterns.

Does it handle template literals with ${} expressions?

Yes — template literals, including nested ${} expressions, are recognized and preserved as a unit.

How much smaller will my file be?

It depends on how many comments and how much indentation the original had — heavily commented code shrinks the most.

Strumenti JSON e Codice

Minificatore JavaScript — Strumento Online Gratuito

Rimuovi commenti e spazi superflui dal codice JavaScript.

Usa Questo Strumento

Funziona nel Tuo Browser
Risultati Istantanei
100% Privato

Your Text

Scopri di Più

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.

Chi Usa Questo Strumento?

Per le Aziende

Reduce the size of a small JavaScript snippet before deploying it.

Per Uso Personale

Shrink a personal script for a small website.

Per Studenti

Compare formatted vs minified JavaScript for a web performance assignment.

Per gli Uffici

Prepare a compact script for an internal tool with size constraints.

Perché Usare Questo Strumento

Caratteristiche Principali

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.

Il Risultato

Vantaggi

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.

Passo dopo Passo

Come Usare Minificatore 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.

Specifiche

Dettagli Tecnici

Dettaglio	Valore
Input	JavaScript source code
Elaborazione	No practical limit — handled entirely by your browser
Output	Removes comments and whitespace only — no variable renaming or logic changes

Puoi Verificarlo

Privacy e Sicurezza

Cosa succede realmente al tuo file quando usi questo strumento.

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.

Ottieni Risultati Migliori

Consigli

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.

Domande Frequenti