Why didn’t my PNG get much smaller?

The browser PNG encoder is not a lossless optimizer. Switch output to WebP or JPEG, or resize the image first.

Will I lose transparency?

JPEG yes — pick a background color on PNG to JPG. WebP can keep alpha in browsers that support it.

Free PNG Compressor — Shrink PNG or Convert Format

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Or click to browse. The file stays in this tab.

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PNG compression in a browser, without false promises

Canvas cannot run TinyPNG-style lossless quantization. This page shrinks a PNG by reducing dimensions or by converting to WebP or JPEG. Keep transparency with PNG to WebP. Photos without alpha compress better as a JPG compressor pass.

Free PNG compressor FAQ

Why didn’t my PNG get much smaller?: The browser PNG encoder is not a lossless optimizer. Switch output to WebP or JPEG, or resize the image first.
Will I lose transparency?: JPEG yes — pick a background color on PNG to JPG. WebP can keep alpha in browsers that support it.

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