One of the biggest mistakes website owners make is putting images on their website that have not been compressed for web usage. You may have visited a website where the image seems to take forever to fill in or appears to paint in as the image loads. This is because the image wasn't properly formatted for the website. Any image that you are going to use on a website should be save at 72 dpi (dpi - dots per inch).
Some people do not have faith in image compression because they believe that compressing an image risks image quality. Others, having tried to magnify images they've found on the internet, have quickly discovered that image quality deteriorates.
While image compression does involve the removal of image data, it does not pose a risk to an image's overall quality. Similarly, images on the internet have been optimized for faster download speeds when a surfer views a web page, and not necessarily optimized to preserve image quality. These kinds of misunderstanding are what often discourage individuals from compressing their images. As a result, they may experience frustration as they repeatedly attempt to transmit their uncompressed images over the web or email.
When the basics of image compression are understood, the benefits become much more apparent. There are two basic type of image compression: lossless and lossy. Both compression types remove data from an image that isn't obvious to the viewer, but they remove that data in different ways.
Lossless compression works by compressing the overall image without removing any of the image's detail. As a result the overall file size will be compressed, but only by a half to one third. Usually, lossless compression will be most effective on images with less color (such as a small image on a white background) as opposed to those with more color (such as a larger image with several shades of background color). When an image compressed using lossless is viewed, the image will actually uncompress and match the original image's quality.
Just as image compression has increased the efficiency of sharing and viewing personal images, it offers the same benefits to just about every industry in existence. Early evidence of image compression suggests that this technique was, in the beginning, most commonly used in the printing, data storage and telecommunications industries. Today however, the digital form of image compression is also being put to work in industries such as fax transmission, satellite remote sensing and high definition television, to name but a few.
In certain industries, the archiving of large numbers of images is required. A good example is the health industry, where the constant scanning and/or storage of medical images and documents take place. Image compression offers many benefits here, as information can be stored without placing large loads on system servers. Depending on the type of compression applied, images can be compressed to save storage space, or to send to multiple physicians for examination. And conveniently, these images can uncompress when they are ready to be viewed, retaining the original high quality and detail that medical imagery demands compresserjpeg.com.
Most digital photo frames display images that are in the JPEG format. Some digital frames can also use the GIF, PNG, BMP and TIFF formats (described below) as well or a combination of these. Because all graphic files such as photographic images are large, 2 different types of compression techniques have been developed in order to save disk space when storing data and images. These are the "lossy" compression and the "lossless" compression.
Lossy Compression. During "lossy" compression, any redundant or unnecessary information or anything the human eye cannot detect will be discarded. It makes for a smaller image but some image quality may be lost. "Lossy" compression only works with complex graphics, audio and video.
