Free Image Compressor – Reduce Image File Size Without Losing Quality
Image compression reduces the file size of photos and graphics by encoding pixel data more efficiently. For JPEGs, compression adjusts the quality factor (1–100), which controls how aggressively the lossy DCT compression algorithm discards fine detail. For PNGs, compression applies lossless filtering and Deflate encoding to reduce file size without any quality loss. For WebP, Google's modern format achieves better compression than both at equivalent visual quality.
This compressor handles all three formats and lets you target a specific output quality or file size. Use it before uploading images to websites (faster load times, better Core Web Vitals scores), sending images by email, or storing photos on limited-capacity devices. All compression runs in your browser using Canvas and native browser codecs — your images are never uploaded to any server.