Mass Image Compressor - Optimize – Resize – Convert – Watermark Images & Videos of Entire Folder. Mass Image Compressor - Batch photo optimizer, bulk image resizer & converter for JPEG, WebP, HEIC, AVIF, and animated formats. Supports watermarking photos with your logo image. Achieve up to 90%+ reduction in RAW to JPEG conversions, and 50%+ reduction for PNGs. Supports advanced compression for WebP and AVIF. Handles formats like Canon CR2/CR3, Sony ARW, Nikon NEF, Fuji RAF, Panasonic RW2, and many more.