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I would like to add an ASCII Art signature (about 4000 characters) in a comment at the top of my webpage with my website link and a small strapline in it. This would give people looking at the source a little treat and let them know who built it.

Would there be any impact for SEO in doing this (plus evidence)?

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up vote 3 down vote accepted

Comments are ignored by the search engines so this will have no impact on your SEO.

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Thanks for the answer, I heard Google only parses a certain amount of characters - does that include the comments or not? – Chimoo Mar 24 '12 at 17:47
@Chimoo: Where did you hear that? – Ilmari Karonen Mar 25 '12 at 2:08
Google will read up to 100k of a file before they stop parsing it and that includes comments. But unless your pages are huge this shouldn't be a problem. If it is, you need to re-evaluate how your content is being presented. – John Conde Mar 25 '12 at 2:44
Thanks John, it shouldn't be a problem in my case – Chimoo Mar 25 '12 at 10:26
Please note that the 100kb crawl/download limit only applies to the "Fetch as Googlebot" tool, and robots.txt instructions. Google has stated that the Googlebot fetches much more on several occasions. – Mike Hudson Mar 25 '12 at 22:17

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