JPEG is a lossy compression method widely used in digital photography. JPEG compression allows reducing file size greatly by compromising a little bit of quality. This non trasparent image format has number of cool features that makes it most widely used image formats. JPEG format allows storing information on image metadata portion called Exif which allow let devices store information such as camera details and location which later can be used to give more detail about the image.
PS2PDF JPEG compressor allows you to compress JPEG files without a limit. It is the fastest JPEG compressor on the web. You can compress a picture or an image by setting Output Quality (a General Option) to either to a percentage of original files quality or to a target size. Setting a target file size is great if you want to send lots of file via E-mail or another medium that does not allow large files.
Another way to compress JPEG files is to resize them to a smaller size. You can use the Resize dropdown on Output Dimension section to reduce image width and height.
Image width and height can be set relatively or independently. Setting relative is preferred if you want to keep the aspect ratio intact.
Most scanners, digital cameras, and cell phones such as iPhone and Android devices convert raw image data to JPEG format before saving to a storage medium. Which user can view using a JPEG compatible viewer. Windows Photos is a great software shipped with the operating system. You can also use Windows Photos app to crop, resize, apply filters and adjust colors. You can simply double click on the image file which by default opens it on the Photos app.
GIMP is one of the best and well-known image editing tools available for Linux/Debian platforms. GIMP can do many things and it can be used as an image viewer. Open GIMP software and click on the File menu. Select your image file by clicking on the Open... option from the file menu.
You can simply double click on the image file to open the JPEG image using Mac OS's default image viewer. Another option is to install GIMP for Mac OS. Which gives you tonnes of features to edit and view your pictures.
JPEG is a popular graphic format, which is characterized by a high degree of compression, which leads to a decrease in image quality. It uses the technology of encoding of smooth color renditions, providing the ability to reduce the amount of data frequently during the recording of the image. Because of the small size it is requested by the owners of websites, allowing you to save the traffic effectively. It is also frequently used in memory cards of digital video cameras. The JPEG algorithm is optimally suitable for compressing photographs and pictures, in which realistic scenes with little contrast of colors are present. It is not recommended to use this format for compression of drawings and various kinds of graphics, since a strong contrast between a number of closely located pixels provokes the appearance of visible artifacts.
The procedure for compressing the digital images in JPEG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, then it is divided into squares to determine the upper range of the color spectrum. Finally, the colors and brightness are coded. JPEG uses a "lossy" compression system and discrete cosine transform technology. The format acts simultaneously as the standard of ISO and the International Telecommunication Union. The file compression ratio is in the range from 10:1 to 100:1. In this case, the reduction in image quality can vary from insignificant to substantial.
The JPEG Committee