Image Compressor
Compress JPG, PNG and WebP images in your browser to shrink file size without uploading.
Knowledge Base & Educational Companion: How image compression works
Image compression reduces file size by re-encoding pixels more efficiently. Smaller images load faster, save bandwidth and improve page speed and SEO.
1. Lossy vs lossless
JPG and WebP use lossy compression, discarding detail the eye barely notices to shrink files dramatically. PNG is lossless, keeping every pixel but staying larger.
2. The quality trade-off
Lowering quality removes more data and shrinks the file, but too low introduces visible artifacts. A setting around 70–80% usually balances size and clarity well.
3. Private by design
This tool re-encodes the image entirely in your browser with an HTML canvas, so your photos are never uploaded — ideal for sensitive or personal images.
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