Image Resolution - Important for SEO on Google?

Question

I typically set my image resolution for the web at 72 pixels/inch. Does Google look at image resolution as a ranking signal? Should I save my images at higher resolutions or does it not matter? The higher resolution images mean larger k sizes but I was not sure about what is acceptable.

Additional links I found helpful:

http://youtu.be/h2Zaj0CAUoU (the most helpful)

http://youtu.be/Sj5Ny21q3oY

http://youtu.be/3NbuDpB_BTc

Answer 1

Different Search Engines have different criteria/Algo. For Image search but as far as Google image search is concerned

• I haven’t seen any such evidence that the resolution matters for a general image search, rather markup techniques (proper naming, right alt attribute ) plays a vital role.

• But the resolution/size of your image will matter when the user filters the image results through sizes Large, Medium Icon etc.

There is a lot of info about optimizing images for Google search, Just use Google itself to find a more detailed answer, I found few links below pretty helpful though not specific to Google but can give you fair idea about the whole process, you might want to have a look at these:

Top 7 image optimization tips for SEO and site speed

How To Optimize Images For Search Engines…

Answer 2

72 dpi is standard web resolution. As far as affecting the SEO of any site these images are on, image size affects how fast a page will load, and that DOES impact your SEO.