can I use an invisible "skip to main content" link without impacting the seo of my webpage?

[PETER T]

wish to add an invisible "skip to main content" link to my webpage for the benefit of screen readers...will this impact organic seo of the web page if a tiny image or font size is used for the link?

[Martin]

You're thinking right in direction of the image to be used instead of a text link for screen readers. Even if you provide alt text for that image, it doesn't really count towards SEO (at least not at Google's), so I would suggest getting on with it.

The only way it can impact SEO is in this image position on your page.
If it's at the very top (i.e. first link or one of the first links), Google will weight it more than the ones below it. So I wouldn't put it on the website as the first link.

Hope this helps.