can any one please let me know the memory limitation(MB) of google sitemap.xml file size开发者_运维问答.

According to the Latest Update: 01 Jan 2017

Any Sitemap file is limited to 50MB (uncompressed) with a maximum of 50,000 URLs.

And a Sitemap index file (not to be confused with a Sitemap file) can include up to 50,000 Sitemaps.

So, for a single Sitemap index file, the maximum capacity of URLs and storage could be calculated as described below:

in terms of URLs:

50,000 sitemaps = ( 50,000 * 50,000 ) URLs = 2,500,000,000 URLs

Note: Google supports several sitemap formats but still, all formats limit a single sitemap to 10MB (uncompressed) and 50,000 URLs. Please also refer to the sitemap index file's schema as being defined here.

in terms of size:

50MB + (50,000 sitemaps * 50MB) = 2,500,050 MB = > 2.3 TB

So altogether, we can have maximum 2,500 millions URLs by submitting a single site map index file and we can have around 2TB of storage for all sitemap files which are included in the site map index file.

Since we can submit up to 500 sitemap index files to Google see here, the conclusion is:

(500 * 2,500) millions URLs limit with the size of (500 * 2) TB

Reference:

Schema for Sitemap index files

Sitemap formats : Google Webmaster Console

Google supports several sitemap formats such as XML, RSS, mRSS, Atom 1.0 and Text.

All formats limit a single sitemap to 10MB (uncompressed) and 50,000 URLs. If you have a larger file or more URLs, you will have to break your list into multiple sitemaps. You can optionally create a sitemap index file (a file that points to a list of sitemaps) and submit that single index file to Google. You can submit multiple sitemaps and/or sitemap index files to Google.

How big can my Sitemap be? : Sitemaps.org

Sitemaps should be no larger than 50MB (52,428,800 bytes) and can contain a maximum of 50,000 URLs. These limits help to ensure that your web server does not get bogged down serving very large files. This means that if your site contains more than 50,000 URLs or your Sitemap is bigger than 50MB, you must create multiple Sitemap files and use a Sitemap index file. You should use a Sitemap index file even if you have a small site but plan on growing beyond 50,000 URLs or a file size of 50MB. A Sitemap index file can include up to 50,000 Sitemaps and must not exceed 50MB (52,428,800 bytes). You can also use gzip to compress your Sitemaps.

NOTE : Updated Limits ( as of Sep 10 2016 )

updated limits are

Number of URLs = 50,000
File size ( uncompressed ) = 10MB

Source : Official Google Guidelines

According to source :

A sitemap file can't contain more than 50,000 URLs and must be no larger than 10 MB uncompressed. If your Sitemap is larger than this, break it into several smaller Sitemaps. These limits help ensure that your web server is not overloaded by serving large files to Google.

For other users, Please ignore the forum links given on other answers,
because those links point to static pages which are not updated.

UPDATED limits from Nov 30 2016

File size limit has been increased to 50MB per uncompressed file & URL limits remain 50,000 URLs per sitemap / sitemap index

You can provide multiple Sitemap files, but each Sitemap file that you provide must have no more than 50,000 URLs and must be no larger than 50MB (52,428,800 bytes). If you would like, you may compress your Sitemap files using gzip to reduce your bandwidth requirement; however the sitemap file once uncompressed must be no larger than 50MB. If you want to list more than 50,000 URLs, you must create multiple Sitemap files.

If you do provide multiple Sitemaps, you should then list each Sitemap file in a Sitemap index file. Sitemap index files may not list more than 50,000 Sitemaps and must be no larger than 50MB (52,428,800 bytes) and can be compressed. You can have more than one Sitemap index file. The XML format of a Sitemap index file is very similar to the XML format of a Sitemap file.

Source https://www.sitemaps.org/protocol.html#otherformats

For those who are still confused about the 10MB limit mentioned on the google suppport page, that page is not updated as they announced the changes on Nov 30, 2016.

Announcement by google : https://twitter.com/googlewmc/status/803884180266479616 Announcement by bing : https://blogs.bing.com/webmaster/November-2016/Increasing-the-size-limit-of-Sitemaps-file-to-addr

TL;DR

Limit for Sitemap Files : 50,000 URLs & 50MB uncompressed file size

Limit for Sitemap Index Files : 50,000 Sitemaps & 50MB uncompressed file size

I have reached this question while developing for 100K products sitemap.

And limits are

1. 50K URL

2. 50 MB file size limit

To stay safe I think multiple sitemaps will help.

<?xml version="1.0" encoding="UTF-8"?>
   <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
   <sitemap>
      <loc>http://www.example.com/sitemap_1.xml</loc>
      <lastmod>2018-01-02T15:11:46+06:00</lastmod>
   </sitemap>
   <sitemap>
      <loc>http://www.example.com/sitemap_2.xml.gz</loc>
      <lastmod>2018-01-01T15:11:46+06:00</lastmod>
   </sitemap>
   </sitemapindex>

According to a claim in the Wikipedia article, the limit is 50,000 URLs and 10 MB (uncompressed) per sitemap. I think this number is from the Google Webmaster FAQ (can't find the official entry but this Google groups entry says the same.)

Not sure whether this limit applies to the other search engine providers as well.

The information you're looking for is located at the link below under "Guidelines for Sitemaps". This comes straight from the horse's mouth as they say.

http://www.google.com/support/webmasters/bin/answer.py?answer=183668

The answer is clear on the official sitemaps.org:

You can provide multiple Sitemap files, but each Sitemap file that you provide must have no more than 50,000 URLs and must be no larger than 10MB (10,485,760 bytes). If you would like, you may compress your Sitemap files using gzip to reduce your bandwidth requirement; however the sitemap file once uncompressed must be no larger than 10MB. If you want to list more than 50,000 URLs, you must create multiple Sitemap files.

tl;dr sitemaps.xml must be < 10mb when uncompressed, regardless if you're gzipping it or not