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MGToolbox

Image Compressor

Popular100% In-Browser

Compress JPG, PNG, and WebP up to 80% smaller without visible quality loss — right in your browser.

Optimization Parameters
80%
Smallest FileBalancedBest Quality

Select images for Image Compressor

Drop your photos here or click to browse. Multiple files supported.

100% In-Browser • Files are processed 100% locally
Zero Data Collection
Files are processed 100% locally
Instant Client-Side Speed
Zero network upload delays
Free & Unlimited
No registration or credit card needed

Free Online Image Compressor — No Upload, No Server

This image compressor runs entirely on your device using your browser's hardware-accelerated canvas encoder. Your photos are never transmitted to any server — you can verify that yourself by opening your browser's DevTools Network tab while compressing.

Batch processing is built in: drop a whole folder of vacation photos, adjust the quality slider once, and download everything as a ZIP. Typical JPEG and WebP files shrink by 60–80% with no visible difference.

Frequently Asked Questions

Everything you need to know about using Image Compressor safely and efficiently.

Lossy compression (JPG/WebP) removes high-frequency detail that is mostly invisible to the eye. At 70–85% quality the difference is practically unnoticeable while file size drops by 60–80%. PNG output stays lossless.
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