RAW file is the best quality/size ratio storage a photograph can use to store his picture, mainly because each primary color (R, G or B) is recorded in 12 or 14bits (8bits for Jpeg), and a lossless compression is used (lossy for Jpeg). JPEG typically achieves 10:1 compression with little perceptible loss in image quality. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. RAW files can be seen as a digital negative format, and do not contains a "ready to view" picture, like jpeg. "RAW" here means that this file stores information directly coming from the sensor, almost without processing. CR2 file format (Canon RAW version 2) is a digital photography RAW format created by Canon. ![]() Click icon to show file QR code or save file to cloud storage services such as Google Drive or Dropbox. ![]() The output files will be listed in the "Conversion Results" section. It will automatically retry conversion on another server if one fails, please be patient while converting. Click the "Convert Now!" button to start batch conversion. The target image format can be JPG, PNG, TIFF, GIF, HEIC, BMP, PS, PSD, WEBP, TGA, DDS, EXR, J2K, PNM, SVG, etc.ģ. If this value is blank, the converter will use the estimated quality of your input image if it can be determined, otherwise 92. The value ranges from 1 (lowest image quality and highest compression) to 100 (best quality but least effective compression). The image quality option only works on a few image formats such as JPG, WEBP or AVIF. You can use the original image size or select the "Change width and height" option and enter a custom image size. Set target image format, image quality and image size. You can use file analyzer to get source image's detailed information such as image size, resolution, quality and transparent color.Ģ. Click the "Choose Files" button to select multiple files on your computer or click the "URL" button to choose an online file from URL, Google Drive or Dropbox. In this case, the reduction in image quality can vary from insignificant to substantial.1. The file compression ratio is in the range from 10:1 to 100:1. The format acts simultaneously as the standard of ISO and the International Telecommunication Union. ![]() JPEG uses a "lossy" compression system and discrete cosine transform technology. Finally, the colors and brightness are coded. First, the photo is transformed into a color space YCbCr, and then it is divided into squares to determine the upper range of the color spectrum. □ The procedure for compressing the digital images in JPG format is carried out in several stages. A strong contrast between several near located pixels provokes the appearance of visible artifacts. It is not recommended to use this format for compression of drawings and various kinds of graphics. The JPG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present. It is also frequently used in memory cards of digital video cameras. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively. It uses the technology of encoding smooth color renditions, providing the ability to frequently reduce the amount of data during the image's recording. □ JPG – is a popular graphic format characterized by a high image compression rate, which leads to a decrease in image quality.
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