Paste your URLs and this generator returns a valid XML sitemap using the sitemaps.org 0.9 protocol that Google, Bing and every other major engine reads. Each entry can carry a lastmod date, a changefreq hint and a priority value, though it is worth knowing that Google ignores changefreq and priority entirely and uses lastmod only when it looks trustworthy — stamping every URL with today's date is a well-known way to have the field discounted. A single sitemap file may hold up to 50,000 URLs or 50 MB uncompressed; beyond that you need a sitemap index pointing to several files. Include only canonical, indexable URLs: redirects, noindex pages and duplicates in a sitemap dilute the signal.
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