Limitation on Google sitemap XML file size, while the 50,000 URLs in single sitemap were not changed the Google and Bing increased the file size limit for XML sitemap from 10MB to 50MB. This is because within XML sitemap instance is sometimes the URL are longer for example image URLs, PDF URLs, alternate language URL and More.
From webmaster tools forums : Google has increased the file size limit from 50,000 URLs with a maximum size of 10MB to 50,000 URLs and a maximum size of 50MB. The new change took effect on June 11th for all languages.
## Update 2012/07/23: Bing changed their sitemap guidelines in June 2012, since then we added Bing to our list of crawlers. We have also added some more changes in the script that supports non-english characters within URL structure and alphabetic characters within title tag as well.
## Update 2012/01/11: Three years later Google increased the XML sitemap limit from a maximum of 50,000 URLs to 100,000 (thanks to Zach Thacker for pointing it out). The reason they gave was that “having one sitemap with 50–100k URLs has always been the recommended best practice.”
Google increased the XML Sitemap file size limit from 10MB to 50MB. This is because within XML sitemap instance is sometimes the URL are longer for example image URLs, PDF URLs, alternate language URL and More.
## Update 2007/09/24: Bing increased the XML sitemap limit from 50000 to 250000 URLs (Thanks to Tom at Bing for sharing the information).
## Update 2007/09/17: Google has increased the XML sitemap limit from 50000 to 100000 URLs and they are telling us that this is the maximum number of URLs per xml file.
