JavaScript Minifier

Parse JavaScript with Terser and print compact syntax with compression and name mangling disabled. Code is never executed.

Free to useNo sign-upRuns in your browser

Enter your details

Enter the inputs, then select Minify JavaScript.

Your result

Enter your details

Result will appear here

How JavaScript Minifier works

Parse JavaScript with Terser and print compact syntax with compression and name mangling disabled.

Code is never executed. The conservative output keeps comments and names; this is not a bundler or obfuscator.

Concept diagram for JavaScript Minifier, showing javascript source input and the supported output. — Concept diagram; the three operation images are actual browser captures.

How to use JavaScript Minifier

Start with your own input.

Enter javascript source

Replace the example with your javascript source.

Minify JavaScript

JavaScript Minifier: input and settings in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

Set the options

Check the source against the supported syntax and limits below.

Minify JavaScript

JavaScript Minifier: tool result in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

Run and check the output

Select Minify JavaScript. Review JavaScript with optional whitespace removed, then use Copy result or download the result file.

Minify JavaScript

JavaScript Minifier: review the details in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

When to use JavaScript Minifier

Compact a JavaScript snippet

To compact a JavaScript snippet, start with javascript source. Parse JavaScript with Terser and print compact syntax with compression and name mangling disabled.

Minify JavaScript

Developer input and configuration represented by document cards. — Prepare the input. Concept illustration.

Keep names while removing spacing

To keep names while removing spacing, start with javascript source. Code is never executed.

Minify JavaScript

A developer example flowing from input to reviewed output. — Inspect an example. Concept illustration.

Prepare a conservative script artifact

To prepare a conservative script artifact, start with javascript source. Review JavaScript with optional whitespace removed, then use Copy result or download the result file.

Minify JavaScript

Developer output handed to the next stage of a workflow. — Use the result in your workflow. Concept illustration.

How to read the result

Check what the output means.

JavaScript with optional whitespace removed. Parse JavaScript with Terser and print compact syntax with compression and name mangling disabled.

Code is never executed. The conservative output keeps comments and names; this is not a bundler or obfuscator.

Minify JavaScript Minify JavaScript

A developer result reviewed alongside its source. — Review the returned output. Concept illustration.

Supported input and limits

Check the format before processing.

Code is never executed. The conservative output keeps comments and names; this is not a bundler or obfuscator.

Inputs and results are handled in this browser.

Minify JavaScript Minify JavaScript

Input format and assumptions reviewed for a developer task. — Check format and assumptions. Concept illustration.

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Minify JavaScript with your input

Review JavaScript with optional whitespace removed, then use Copy result or download the result file.

Minify JavaScript

JavaScript Minifier: common questions

Answers about using JavaScript Minifier and understanding its results.

What does this tool support?

Code is never executed. The conservative output keeps comments and names; this is not a bundler or obfuscator.

Can I save the result?

Yes. Download the result file after processing. Text results also have Copy result. Processing uses local browser code; no account is required.