Image file name, is it important

[BigBlaze205]

If I use the same image all over my site, do I need to change the file name to avoid duplicate?

Different alt text will be use on those images

[stevenmusumeche]

You don't need to worry about some sort of duplicate content penalty for using the same image/filename all over your site.  This is common practice, for example, Amazon uses the same logo image file on every page of their site.

[dlrPaul]

As Steve says it won't affect you for Dup Content. One thing to bear in mind when naming images is that optimising the filename along with the alt text etc.. can yield some surprising results via Google Image Search, I had an image ranking for the term "fireworks" delivering a substantial amount of traffic

[scanlin]

Paul, I assume you mean making the image file name the same as the alt text? And both for the phrase that the page is optimized for, right?

[dlrPaul]

My example was:

Filename: fireworks-display.jpg

Alt Text: Fireworks Display Night Extravaganza

Also, the page content was heavily weighted towards "fireworks + display". Over the New Year period, when traffic on this site averages approx 20k, I had 200k impressions of this image via Google Image, it was short lived as once New Year passed, so did the search volume but it certainly opened my eyes to the possibilities.

[stevenmusumeche]

Do you get any value/conversions out of that type of image referral?

[dlrPaul]

The ROI for this is a lot lower than general Search traffic (I've had 3 conversions from this), however, I would say that for the little work it took to do, 1 conversion would have made it worthwhile.