Google sitemaps are a vital part of any Search-engine Optimisation scheme, but exactlty what can you do if you got a big site that you happen to be trying to work on? Online sitemap generators seem to be limited to around 500 pages and don’t have the robust features that offline xml sitemap generators can provide. It’s essential that you include all the pages you would like to have google index in your google sitemap file. Get an offline sitemap creator that is designed for more than 500 urls (some are even limitless).
The majority of downloadable tools don’t have site size limits, you won’t have any difficulties right? But if your xml sitemap is bigger than 50,000 pages you’ll have to divide it into several sitemap files. Why? Because Google restricts each individual google sitemap file to at the most 50,000 URLs (or 10MB, whichever comes first). Splitting your sitemap is pretty easy, ensure that each google sitemap file has at most 50,000 pages (and that you don’t have duplicate URLs the sitemaps between the files). Name your separate xml sitemap files along these lines: sitemap1.xml, sitemap2.xml, etc.
Composing the xml sitemap index file is pretty easy too. It is merely another XML file (a bit different from a sitemap) that contains references to the individual xml sitemap files. Additional details are available here:
http://www.sitemaps.org/protocol.html#index
If all this is over your head, do yourself a favor and download an offline sitemap generator that includes the xml sitemap index feature. I like the Inspyder tool because it will automatically split the google sitemap if it goes over 50,000 pages and create the sitemap index file for you. It has no page limits, so it is compatible with huge sites like my own. It handles the FTP upload and pinging so once it’s configured, it’s on auto-pilot.
Sitemaps are an critical component of your SEO base. If you are still using free online tools, consider taking your google sitemap to the next level with an offline xml sitemap generator. I think you’ll find that the investment pays for itself in no time. I know it did for me.
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Unlimited Google Sitemap Creator Software 