GIF87a versus GIF89a - Web Designing

There are technically two types of GIF file: GIF87a and the newer, improved GIF89a. Both are fully supported on most browsers, and both use .gif as their file name suffix. GIF87a is the original format for indexed color images. It uses LZW compression and has the option of being interlaced.

GIF89a is the same, but also includes transparency and animationcapabilities. If you want to add these features to your graphic, you'll need to create the graphic with a tool that supports the GIF89a format.

These features have become so popular with web developers that thisformat has become the de facto standard on the Web today.

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