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It seems like you are actually asking 2 questions in one. Let's approach them both separately. Should you include index.html or not in your structure? Personally, I think the cleanest URL structure works the best. Get rid of any URL parameters that do not offer any benefit. Cleaner URLs not only look better, but are easier to read and share. Who really wants to share DOMAIN.com/fishing.index.html vs DOMAIN.com/fishing. It may seem petty, but in the grander scheme of things it will just work better. If you do this in one area of your site, keep it consistant through the whole site As to making sure that Google only indexes one version, this can be done through the URL parameter redirects on your server. You can create rules where the URL automatically strips out any additional URL items, and redirects to the proper version. Once you create your sitemap, make sure to only include the versions of your URL you want indexed. One thing I have found in my entire SEO career is this: The easier and clearer you paint a picture for Google about your site, the better your results will be.