Does compressing a PNG keep transparency?

Yes. PNG and WebP both support transparency, so a transparent background is preserved. Converting to JPG would flatten it onto a white background.

Is this PNG compressor free and private?

Yes — free, no sign-up, and every image is processed locally in your browser, so nothing is uploaded.

Free · No upload · Private

Compress PNG images online

Reduce PNG file size while keeping crisp edges and transparency — ideal for screenshots, logos and graphics. For the biggest savings, convert to WebP in one click. All in your browser.

Drop PNG images here or browse

PNG · JPG · WebP — or paste with Ctrl/⌘ + V

Output format

Quality 80%

Resize

🔒 Your PNGs are processed entirely on your device. Nothing is uploaded.

Getting the smallest PNG

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PNG is lossless

PNG keeps every pixel exact, so re-saving alone won't shrink it much. The two levers that really help are below.

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Convert to WebP

Set the output format to WebP to cut file size by 60–90% while keeping transparency — perfect for the web.

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Resize it

If the image is larger than it needs to be, resizing the dimensions is the fastest way to drop the size.

Compress PNG — FAQ

Why didn't my PNG get much smaller?

PNG is lossless, so simply re-encoding it has a limited effect. For real savings, switch the output format to WebP or resize the image — both keep transparency.

Does compressing keep transparency?

Yes. PNG and WebP both support transparent backgrounds. Only converting to JPG removes transparency (it flattens onto white).

Best for screenshots and logos?

For sharp UI screenshots and flat graphics, WebP usually gives the smallest file with no visible loss. Try it and compare the saving shown.

Is it free and private?

Yes — free, no account, and your images are compressed locally in your browser, never uploaded.