You can use lossless compression after lossy compression to get the maximum compression ratio. The optimization levels 2 and higher enable multiple IDAT compression trials the higher the level, the more trials. The optimization level 0 enables a set of optimization operations that require minimal effort. For the lossless compression, PNG optimization level is 0 to 7 (highest compression). For the lossy compression, PNG quality is 0 (lowest image quality and highest compression) to 100 (best quality but least effective compression). The lossy compression works like the 'Save for Web' function in Adobe Photoshop. PNG - PNG compression type can be lossy compression or lossless compression. JPG - For the JPEG image formats, JPG quality is 1 (lowest image quality and highest compression) to 100 (best quality but least effective compression). Different image formats use different optimization options. The image format can be JPG, PNG, GIF, SVG, WEBP or DDS.Ģ. Click the 'Choose Files' button to select multiple files on your computer or click the dropdown button to choose an online file from URL, Google Drive or Dropbox.

Picture file size reducer