PNG Images in Web Design

Images are the parts of website content and they are implemented in several formats. One of the most popular image formats is the PNG and it was developed originally in the middle 90s as an alternative solution to the inadequate GIF format images. Since the web designers (including the ones who built Plain found themselves short of support for the PNG format from various browsers they were using it only sparingly.

PNG found a large obstacle in Internet Explorer of Microsoft the most popular internet browser because it did not extend much support to this format of image files. The drawback however was largely resolved by the release of the Internet Explorer 7 and the various hacks of Java Scripts. The PNG is back in business and has become popular more so now. There three attributes that make PNG the most liked image format for designing website content.

  1. Transparency

Compared to GIF, the PNG format offers lesser transparency because it is versatile unlike the former that could only save a particular color either transparent or opaque. With PNG you can use it as a textured or gradient background or watermark, faded to transparent from opaque smoothly and leaving the content beneath clearly revealed.

  1. Compression without loss

JPEG images when compressed automatically lose some of their originality and offer a degraded image quality. On the other hand GIF offers lossless image quality but supports only 256 color palette rendering it useless for complex full color photography. Here the PNG scores on both counts and it offers lossless compression and also support larger size photos.

  1. Gamma Correction

The primary problem faced by designers is the task of adjusting contrast and brightness of the images to suit a variety of operating systems and monitors. This is because of the different gamma correction system integrated in monitors and PNG greatly solve this problem because it has inbuilt gamma correction abilities.