File Extension PNG

  • Full name
    Portable Network Graphic Format
  • Developer
  • Popularity
Have you encountered a problem with a PNG file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a PNG file here. In the further part of this page we have added a list of programs that should open your PNG file. It is enough you choose a proper application for your operating system, download and install it.


The Portable Network Graphics Format is an image format that is most commonly used on the Internet today, in addition to JPEG. The PNG format was developed as a substitute for the GIF, which unfortunately could not be freely used in any graphics application due to license requirements.

PNG is license-free, which is why there are now numerous, even free software that can read and write this format. PNG compresses the graphics data with the lossless Deflate method, supports transparency, embedded gamma corrections, TrueColour, color palettes and color profiles. This makes PNG ideal for use on the Internet, especially when lossless graphics and images are required.

A replacement for the animated gif files was developed with MNG, which was not successful until now. Instead, an extension apng was created, which can now be displayed by some browsers. (Firefox 3 and Opera 9.5)

Although almost all graphics programs can generate PNG files, the compression rates are usually very different. Often PNG files are insufficiently optimized or padded with metadata, which makes the PNG files unnecessarily large. Some programs offer special options such as "save for web" or bring an extra application (such as Imageready in Photoshop). In some cases, the optimized saving functions can also be found under "Export" (eg Corel PaintShop Pro).

Pretty much any image viewer can display PNG images and since PNG is also a web format, of course, as well as any browser. It should be noted here that the Internet Explorer can only show the transparency of a PNG file as of version 7.

Programs which can open a PNG file

How to open a PNG file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the PNG file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a PNG file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support PNG files. At this point we are looking for disk space where the application was installed in and we can link it with a PNG file. Since then, our operating system will use the selected program to support all PNG files.

Other issues

Despite the described problem with PNG there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the PNG file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the PNG file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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