October 6, 2012
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We are used to seeking an image’s caption below it, not above it. If we see a column of images and captions, as on a web page, we will tend to assume that each caption, unless followed by a colon, describes the image above it.
Unfortunately, Google works otherwise. In indexing images, Google pays more attention to the text before an image than to text following it. This regularly leads to incorrect indexing.
What do? Where possible, use descriptive file names, title and alt tags. If these three strings match, they will probably weigh more than any text above the image.
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