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Input Characters
About JavaScript Optimizer
JavaScript Optimizer is a free online tool for cleaning and reducing unnecessary characters from JavaScript source code. It processes JavaScript directly in your browser and applies only the optimization options you select.
How To Use
- Paste your JavaScript code into the input box.
- Select the optimization options you want.
- Click Optimize JavaScript.
- Review the optimized output.
- Copy or download the optimized JavaScript.
Features
- Browser-based JavaScript optimization.
- Removes JavaScript comments when enabled.
- Reduces unnecessary whitespace.
- Removes unnecessary blank lines.
- Normalizes duplicate semicolons.
- Copy optimized JavaScript.
- Download optimized JavaScript.
- Input and output statistics.
- No registration required.
- JavaScript source is processed in the browser.
Frequently Asked Questions
What does the JavaScript Optimizer do?
It cleans JavaScript source code by applying selected source-level optimizations such as removing comments, reducing unnecessary whitespace and removing unnecessary blank lines.
Does the optimizer execute my JavaScript?
No. The tool processes the JavaScript source text and does not execute the supplied program.
Is my JavaScript uploaded to a server?
The optimization is performed directly in your browser by the JavaScript code of this tool.
Does optimization change my JavaScript logic?
The optimizer is designed for conservative source-level cleanup rather than aggressive code transformation. However, as with any automated source transformation, you should review and test the output before using it in production.
Can I copy the optimized JavaScript?
Yes. Click the Copy Output button to copy the optimized JavaScript.
Can I download the optimized JavaScript?
Yes. The Download button creates a JavaScript file containing the optimized output.