JavaScript Bundle Size Analyzer

JS → Size Savings

Calculate uncompressed vs minified JavaScript byte sizes and savings percentage.

About this tool

About JavaScript Bundle Size Analyzer

JavaScript Bundle Size Analyzer is a free, browser-based tool that lets you calculate uncompressed vs minified JavaScript byte sizes and savings percentage. It supports JS → Size Savings. Everything runs locally on your device, so your files are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open JavaScript Bundle Size Analyzer, add your input, and get results instantly.

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Answers and guidanceFrequently Asked Questions

Does it calculate minification savings?

Yes, shows exact byte savings and percentage reduction.

Is JavaScript Bundle Size Analyzer free to use?

Yes. JavaScript Bundle Size Analyzer is completely free with no usage limits, no watermarks, and no sign-up. You can use it as often as you need.

Do I need to install any software to use JavaScript Bundle Size Analyzer?

No. JavaScript Bundle Size Analyzer runs entirely in your web browser. There's nothing to download or install u2014 just open the page and start working.

Are my files private and secure with JavaScript Bundle Size Analyzer?

Yes. JavaScript Bundle Size Analyzer processes everything locally on your device. Your files are never uploaded to a server, so your data stays private and is cleared when you close the tab.

Does JavaScript Bundle Size Analyzer work on mobile and tablet?

Yes. JavaScript Bundle Size Analyzer works in any modern browser on desktop, laptop, tablet, and mobile u2014 no app required.

Do I need an account to use JavaScript Bundle Size Analyzer?

No account or email is required. You can use JavaScript Bundle Size Analyzer instantly without registering or sharing any personal details.

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JavaScript Bundle Size Analyzer

About JavaScript Bundle Size Analyzer

How to use JavaScript Bundle Size Analyzer

Paste JS

Check Size

Key features

Performance Optimization

100% Private

Completely Free

No Installation

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UUID Generator