Image upload SEO tips?
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Is there anything I can do to my images other than naming them correctly to have with SEO?
Size? File type?
Maybe adding text on top of them to pick up OCR?
Thank you,
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This White Board Friday Rand released is quite helpful:
https://moz.com/blog/seo-photos-visuals-graphics-whiteboard-friday
Careful on the social engagement thing, I was running experiments and apparently 200 retweets was a little to much in a 24 hour period from an arbitrary tweet containing an image lol! Got ghosted for like 2 weeks.
If you want a helpful infographic additionally

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Hello James,
I believe Sean's have answered your questions. Just wanted to tell you not to overoptimize your image for SEO, you do not want all of your image file name, alt text, title text to be your keywords, that certainly doesn't help.
For file type, I usually stick with JPG and compressed them using Tinyjpg.com before I upload it to my site, PNG typically has much larger file size.
Cheers,
Joseph Yap