How many URLs can one sitemap hold?

50,000 URLs and 50 MB uncompressed, per the sitemaps.org protocol, with each URL shorter than 2,048 characters. Over either limit the generator stops and asks you to split the list into several sitemaps listed in a sitemap index; it does not write the index.

What date format does lastmod need?

YYYY-MM-DD, such as 2026-05-01, or a date and time with seconds and a zone, such as 2026-05-01T09:30:00Z or 2026-05-01T09:30:00+01:00. A year alone, a year and month, a time without seconds and a date that does not exist, such as 2026-02-30, are refused.

Should I add changefreq and priority?

Google says it ignores both, so they are off. Tick them and every URL gets the same value, by default weekly and 0.5 .

Does Google use lastmod?

Only when it is consistently and verifiably accurate, Google says, and sitemaps.org says it should give the date the page last changed, not the date the sitemap was made. Add a date only on lines where you know it; lines without one get no lastmod tag.

Can one sitemap list both www and non-www addresses?

sitemaps.org says all URLs in a sitemap share one host and protocol. The generator still writes them, with the warning "The URLs use more than one host or protocol."

Sitemap Generator

Paste one URL per line to get a sitemap.xml: addresses percent-encoded and XML-escaped, duplicates removed, and a lastmod date where you add one after a |. How it works

URLs (one per line)

Add a last-modified date after a | only where you know it, for example https://example.com/about | 2026-05-01. Lines without a date get no lastmod tag.

Add a changefreq tag to every URL

Change frequency

Add a priority tag to every URL

Priority

Google ignores changefreq and priority, so they are left out unless you tick them.

Generated XML

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://example.com/</loc>
  </url>
  <url>
    <loc>https://example.com/about</loc>
  </url>
  <url>
    <loc>https://example.com/contact</loc>
  </url>
</urlset>

3 URLs (limit 50,000 per sitemap).

Spaces and non-ASCII characters in a URL are percent-encoded, and & < > " ' are escaped for XML. A sitemap is a hint for crawlers: it does not guarantee that a page is crawled or indexed.

About the Sitemap Generator

Paste one URL per line and the sitemap generator writes a sitemap.xml with a <url><loc> block for each address, so the three example lines give 3 URLs. Spaces and accented letters are percent-encoded, & becomes &, duplicates and #fragments are removed, and a date after " | " becomes <lastmod>. sitemaps.org allows 50,000 URLs and 50 MB per sitemap.

What a line becomes

Line	<loc>	<lastmod>
https://example.com/about \| 2026-05-01	https://example.com/about	2026-05-01
https://example.com/about \| 2026-05-01T09:30:00+01:00	https://example.com/about	2026-05-01T09:30:00+01:00
https://example.com/a b	https://example.com/a%20b	(none)
https://example.com/café?q=a&b=1	https://example.com/caf%C3%A9?q=a&b=1	(none)
https://example.com/a#top	https://example.com/a	(none)
https://example.com/?a=1\|2	https://example.com/?a=1%7C2	(none)

A removed #fragment gets a note. A | inside an address is part of it; only a | with a space on each side starts the date.

Lines the generator refuses

Line	Message
example.com/a	"example.com/a" is not an absolute http or https address.
https://example.com/about \| 2026-05	"2026-05" after the \| is not a valid date.
https://example.com/about \| 2026-05-01T09:30+01:00	"2026-05-01T09:30+01:00" after the \| is not a valid date.
https://example.com/about \| 2026-02-30	"2026-02-30" after the \| is not a valid date.
https://user:[email protected]/a	The address contains a user name or password ("user:password@").

The start of each message. The date messages go on to list the formats that are accepted.

Frequently asked questions

How many URLs can one sitemap hold?: 50,000 URLs and 50 MB uncompressed, per the sitemaps.org protocol, with each URL shorter than 2,048 characters. Over either limit the generator stops and asks you to split the list into several sitemaps listed in a sitemap index; it does not write the index.
What date format does lastmod need?: YYYY-MM-DD, such as 2026-05-01, or a date and time with seconds and a zone, such as 2026-05-01T09:30:00Z or 2026-05-01T09:30:00+01:00. A year alone, a year and month, a time without seconds and a date that does not exist, such as 2026-02-30, are refused.
Should I add changefreq and priority?: Google says it ignores both, so they are off. Tick them and every URL gets the same value, by default <changefreq>weekly</changefreq> and <priority>0.5</priority>.
Does Google use lastmod?: Only when it is consistently and verifiably accurate, Google says, and sitemaps.org says it should give the date the page last changed, not the date the sitemap was made. Add a date only on lines where you know it; lines without one get no lastmod tag.
Can one sitemap list both www and non-www addresses?: sitemaps.org says all URLs in a sitemap share one host and protocol. The generator still writes them, with the warning "The URLs use more than one host or protocol."

After you download sitemap.xml

Upload the file to the root of the site, such as https://example.com/sitemap.xml. sitemaps.org says the location of a sitemap decides which URLs it may list, so a file inside /blog/ can only cover addresses under /blog/. Then add the line Sitemap: https://example.com/sitemap.xml to robots.txt (the Robots.txt Generator writes it) or submit the address in Google Search Console.

A list copied from a spreadsheet or a CMS export can go in as it is: duplicates and #fragments are removed, and lines that are not full http or https addresses are flagged.

From a line to a url entry

Each line is URL or URL | date. The address must start with http:// or https://. It is normalised the way a browser reads it (a space becomes %20, é becomes %C3%A9), a #fragment is removed, and & < > " ' are escaped for XML. A date must be YYYY-MM-DD or a full date and time with seconds and a zone.

Example: https://example.com/café?q=a&b=1 becomes <loc>https://example.com/caf%C3%A9?q=a&b=1</loc>, and https://example.com/about | 2026-05-01 also gets <lastmod>2026-05-01</lastmod>.

Limits from sitemaps.org: 50,000 URLs and 50 MB per sitemap, each URL shorter than 2,048 characters. Google ignores changefreq and priority, so both are off unless you tick them.

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