Compress JPG, PNG & WebP Without Losing Quality — Free, No Upload

Every image on the web contains extra data that can be optimized without degrading what the human eye sees. Pexlii compresses your photos right in your browser using modern client-side graphics engines rather than sending your private images to remote servers. When you drop an image in here, nothing gets sent anywhere—your browser does the work itself on your device. The tool draws the photo onto an in-memory HTML5 Canvas and applies fine-tuned quantization algorithms. For JPEG images, it optimizes discrete cosine transform (DCT) frequency tables to discard imperceptible color noise. For PNGs, it optimizes color palettes, and for WebP, it uses predictive block coding. You can adjust the quality slider to find the perfect balance between file size and sharpness, using the interactive before-and-after split preview. Because all calculations happen in your computer's local memory, compression is blazing fast and completely confidential.