PNG Optimizer
Re-encode PNGs to trim bytes while keeping transparency intact.
🔒 Everything runs in your browser — your files are never uploaded to any server.
About PNG Optimizer
PNG Optimizer — a fast, private, in-browser tool. Re-encode PNGs to trim bytes while keeping transparency intact. Everything runs on your own device, so your images are never uploaded.
How to use PNG Optimizer
- 1Drop your image(s) onto the page.
- 2Adjust the option shown (quality, target size or format).
- 3Download your optimised file, or all of them as a ZIP.
Why use PNG Optimizer?
- ✓Ideal for developers shipping leaner PNG assets.
- ✓No sign-up, no watermark, no size games.
- ✓Process one file or a whole batch and download as a ZIP.
Frequently asked questions
Is PNG Optimizer free?+
Yes, completely free with no account and no watermark. It runs entirely in your browser.
Are my images uploaded?+
No. PNG Optimizer processes everything locally on your device — your files never leave your computer or phone.
Can I process multiple images at once?+
Yes. Drop several files and download the results together as a ZIP archive.
Which browsers are supported?+
Any modern browser (Chrome, Edge, Firefox, Safari) on desktop or mobile works, since the tool uses the browser's built-in image engine.
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