Will compression reduce every file?

No. Savings vary, and some output files can be larger. The results show actual sizes and whether the batch became smaller or larger.

Does compression change image quality?

JPEG and WebP output uses lossy compression. PNG optimization preserves the pixels decoded by your browser; it does not preserve every original file property or embedded metadata.

What happens to transparent images?

PNG output retains transparency. WebP transparency depends on browser support. JPEG has no transparency, so transparent areas become white.

Can I compress several images together?

Yes. Images are processed one after another. Successful results stay available when another image fails, and you can retry failed files.

Are animated images preserved?

No. The output is a still image, not an animation.

Are my images uploaded?

No. Image compression runs in your browser. No account is required.

Compress Images — Free & Private

Compress JPG, PNG and WebP images in your browser. Choose an output format, adjust JPEG or WebP quality, and see the original and resulting file sizes.

Drop images to compress

PNG, JPG, WebP · Up to 50 MB and 32 million pixels each

🔒100% Private — Your files never leave your device. All processing runs locally in your browser.

How It Works

Compress JPG, PNG and WebP images in your browser. Choose an output format, adjust JPEG or WebP quality, and see the original and resulting file sizes.

PNG optimization keeps the decoded image pixels and transparency. JPEG and WebP use lossy quality settings. File-size changes depend on your source image and settings; an already optimized image may become larger.