The images on the computer are in the form of digital files, the format of which depends on the type and purpose graphics.
Conventionally, all these formats are divided into two major groups - to display images on the screen and for printing.
png - image format for the internet
Of all the image formats used todayfor web images are most commonly used three - gif, jpeg and a young but very promising png format. Designed in 1995 as an alternative does not satisfy all GIF user requests, it is designed for images that you plan to use the Internet. In contrast, gif, png format supports 24-bit images and produces background transparency without jagged edges.
Key Benefits Supports png formatany colors, work with transparent pixels, the effective compression algorithm without loss of image quality. Unlike gif, which only supports full transparency, png saves as semi-transparent pixels (1-99%) due to the alpha channel with 256 shades of gray. Built-in gamma correction allows distortion-free display colors on any computer, regardless of platform. This format has the ability to boot from interlaced, and a double - both horizontally and vertically.
png format supports RGB color model,Grayskale, Indexed Color and Bitmap images without alpha channels. It is not intended to be used with professional graphics and does not support CMYK color.
How to view the file with the extension png
The easiest way to open the file - twoonce you click on it with the left mouse button. Even if you have not installed any additional software, run "Windows Photo Viewer" and the picture will be opened. In addition, this format seamlessly opens editing Paint (where you can also edit images and create a new) and the browser Internet Explorer, included in the standard package.
For a more comfortable work with images betterinstall on your computer special programs designed for sorting, viewing and editing. Format png - is a graphic file, therefore it can easily run any of these programs. There are many free applications, the functionality of which is sufficient for most emerging challenges.
If the system can not open the file with the extension png, you need to reinstall applications and standard windows registry to check for errors.
Program for viewing and editing images
Picasa - a program for viewing andimage editing. It has built-in filters that can help to quickly and accurately process image. Also in Picasa, you can create a presentation of pictures picked up by applying transitions and add audio.
FastStone Image Viewer - a handy application forhousehold use. It includes all the basic image processing functions. The main advantage of this program - to view the image, open to the entire screen with the increase of the individual parts. This will see any area in detail. Slideshow made using FastStone, will have the extension exe, so easy to start even on the old computer.
XnView - very functional program withfriendly interface. Photos can not only see but also edit. Such frequently used operations such as photo rotation, alignment, color, or red-eye removal, is available immediately in the preview window. In addition, this program can create a blurring effect or to improve clarity. XnView has a lot of useful options. For example, search for duplicate files, batch processing, and create a slideshow.
Ashampoo Photo Commander FREE - qualitya utility for viewing and editing graphics. It has built-in effects such as sepia, shadow, sharpness, allows you to crop and rotate the image. Besides the basic functions, it has the ability to make snapshots of the desktop, burn photos to CD or DVD, convert images and send them via e-mail. In addition, it is possible to create panoramas and collages.
In addition to graphics editors and viewers of images, files with the extension png open in any modern browser, and in Microsoft Office Word.
All of the programs are completely free of charge. There are many other similar applications. Among them are, for example, Honeyview, which allows you to view photos directly from the archive zip, 7z or rar, not unpacking them. Also noteworthy image viewer Irfan View. Its functionality can be increased significantly by using plug-ins, the choice of which will depend on the challenges faced by a particular user.