How does image compression work?

This tool uses your browser's built-in Canvas API to re-encode images as JPEG with adjustable quality. Lower quality means smaller files but may introduce visible artifacts.

Are my images uploaded to a server?

No. All compression happens entirely in your browser using JavaScript. Your images never leave your device.

What image formats are supported?

You can upload any image format your browser supports (JPEG, PNG, WebP, GIF, BMP). The output is always JPEG for optimal compression.

How much can I reduce the file size?

Typically 50-80% reduction at 70% quality with minimal visible difference. Results vary depending on the image content and original format.

Image Compressor

Compress images to reduce file size while maintaining quality. All processing happens in your browser — images are never uploaded to any server.

Click to upload an imageJPEG, PNG, WebP, GIF — any size

Quality: 70%

Smaller fileHigher quality

What Is Image Compression?

Image compression reduces file size by removing unnecessary data. Lossy compression (like JPEG) sacrifices some quality for smaller files, while lossless compression preserves quality. This tool uses adjustable lossy compression for the best balance between size and quality.

Frequently Asked Questions

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