Free Image Compressor — Reduce File Size Instantly

Most JPEG photos compress by 50–70% with barely visible quality change at quality setting 80. PNG files with large flat-color areas compress by 60–80%. Highly detailed photos or already-compressed JPEGs compress less — typically 20–40%. The tool shows exact before/after sizes so you can judge the result.

Lossy compression (used for JPEG) permanently removes some image data to achieve smaller file sizes — the human eye rarely notices at quality 75–85. Lossless compression (used for PNG) reorganizes data without discarding any, so quality is identical but file size reduction is smaller. Our tool applies the best method for each format automatically.

JPEG, PNG, WebP, AVIF, and TIFF are all supported via the Sharp image processing library. The output format matches your input format. If you want to convert formats while compressing — for example PNG to WebP for even smaller files — use our PNG to WebP converter tool.

Images are sent to our server for processing using the Sharp library, which delivers significantly better compression than browser-only tools. Your files are processed immediately and deleted after download — we do not store, analyze, or share uploaded images.

For website images, quality 75–85 is the standard recommendation — it cuts file size substantially while keeping photos sharp enough for Retina displays. For thumbnails and previews, quality 60–70 is acceptable. For print or archival use, stick to 90+. Google PageSpeed Insights flags images above 100KB, so compress until you are comfortably under that threshold.