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Image Compressor

Compress images online for free. Reduce file size with adjustable quality. Supports JPEG, PNG, and WebP output. All processing happens in your browser.

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Drag & drop an image here or click to select
Supports JPEG, PNG, GIF, BMP, SVG, WebP

What Is Image Compression?

Image compression reduces the file size of images while preserving acceptable visual quality. This tool uses browser-native Canvas API to re-encode images at your chosen quality level, with no server upload required. Lower quality values produce smaller files but may introduce visible artifacts. WebP generally offers the best compression ratio, while PNG is lossless and best for graphics with sharp edges or transparency.

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FAQ

How much can images be compressed?
Typically 50-80% size reduction without visible quality loss. A 2MB JPEG can often be reduced to 200-500KB. The actual reduction depends on the image content, original quality settings, and target format.
Does image compression reduce quality?
Lossy compression (JPEG, WebP) removes some data and reduces quality slightly. At 80-85% quality settings, the difference is imperceptible to the human eye. Lossless compression (PNG optimization) reduces size without any quality loss.
What image format is best for web?
WebP offers the best size-to-quality ratio for most web images. Use JPEG for photographs, PNG for images requiring transparency or sharp edges (logos, icons), SVG for simple graphics and icons, and AVIF for cutting-edge browsers.
How does image compression improve website performance?
Smaller images load faster, improving Core Web Vitals scores (especially Largest Contentful Paint). Google uses page speed as a ranking factor. Compressed images reduce bandwidth costs and improve user experience on slow connections.