What\'s the Smallest Data URI for a Transparent GIF in CSS Sprites?

Minimizing Data URI Image Size for Transparency

Question:

When utilizing a tiny transparent image as a CSS sprite background, what is the smallest possible data URI that can produce a transparent image?

Answer:

After experimenting with various transparent GIFs, it was discovered that certain GIFs can cause CSS glitches, particularly when assigning background images to elements with transparent GIFs. To ensure stability, a slightly longer data URI is recommended:

Stable (78 bytes)

data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7

Avoid Omitting Image Type:

It is crucial to include the image type (image/gif) in the data URI. Omitting this information can result in rendering issues in various browsers.

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