Image Compressor

Compress JPG & PNG images in your browser. Click any thumbnail to fine-tune quality.

Compression Settings
Compression Quality (applies to all images) 70%
Lower quality = smaller file size. Changing this re-compresses every uploaded image.
Drop your files here
or use Select Files above — JPG, PNG, up to 20 images, 25MB each
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Everything is processed locally in your browser. Your images are never uploaded.

How to Compress an Image

Drop or select your JPG/PNG images. Each one is automatically compressed, and you can click the settings icon on any image to fine-tune its quality, or use the global settings to adjust every image at once. Download individually or grab everything as a ZIP.

Is my image uploaded anywhere?

No. Compression happens entirely in your browser using the Canvas API and client-side PNG palette optimization. Your images never leave your device.

Frequently Asked Questions

Some quality loss is expected with any compression, but at the default and higher quality settings, the difference is generally not noticeable to the eye. Lower quality settings save more space but may show visible quality loss.

Yes. The tool automatically adjusts its approach (including reducing PNG color palettes when needed) to ensure the output is always smaller than the original file.

Yes, you can upload and compress up to 20 images in a single batch, then download them individually or all together as a ZIP file.

Yes. You can apply one quality setting to your whole batch using the global settings, or click the gear icon on any individual image to fine-tune just that one.

No, this tool keeps each image in its original format. PNGs stay PNG (compressed via color palette reduction) and JPEGs stay JPEG (compressed via quality adjustment).

Some PNGs - especially simple graphics or already-optimized images - have limited room for further lossless compression. The tool will still attempt palette-based compression, but very simple images may see smaller gains than photos.

No. Compression happens entirely in your browser. Your images are never uploaded anywhere.

Each image can be up to 25MB, with a maximum of 20 images per batch.

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