ekalininsitemap 
sitemap is a high-level streaming sitemap-generating library/CLI that makes creating sitemap XML files easy. What is a sitemap?
Table of Contents
- Installation
- Generate a one time sitemap from a list of urls
- Example of using sitemap.js with express
- Generating more than one sitemap
- Options you can pass
- Examples
- API
- Maintainers
- License
Installation
npm install --save sitemap
Generate a one time sitemap from a list of urls
If you are just looking to take a giant list of URLs and turn it into some sitemaps, try out our CLI. The cli can also parse, update and validate existing sitemaps.
npx sitemap < listofurls.txt # `npx sitemap -h` for more examples and a list of options.
For programmatic one time generation of a sitemap try:
const { SitemapStream, streamToPromise } = require( 'sitemap' )
const { Readable } = require( 'stream' )
// An array with your links
const links = [{ url: '/page-1/', changefreq: 'daily', priority: 0.3 }]
// Create a stream to write to
const stream = new SitemapStream( { hostname: 'https://...' } )
// Return a promise that resolves with your XML string
return streamToPromise(Readable.from(links).pipe(stream)).then((data) =>
data.toString()
)
Serve a sitemap from a server and periodically update it
Use this if you have less than 50 thousand urls. See SitemapAndIndexStream for if you have more.
const express = require('express')
const { SitemapStream, streamToPromise } = require('sitemap')
const { createGzip } = require('zlib')
const { Readable } = require('stream')
const app = express()
let sitemap
app.get('/sitemap.xml', function(req, res) {
res.header('Content-Type', 'application/xml');
res.header('Content-Encoding', 'gzip');
// if we have a cached entry send it
if (sitemap) {
res.send(sitemap)
return
}
try {
const smStream = new SitemapStream({ hostname: 'https://example.com/' })
const pipeline = smStream.pipe(createGzip())
// pipe your entries or directly write them.
smStream.write({ url: '/page-1/', changefreq: 'daily', priority: 0.3 })
smStream.write({ url: '/page-2/', changefreq: 'monthly', priority: 0.7 })
smStream.write({ url: '/page-3/'}) // changefreq: 'weekly', priority: 0.5
smStream.write({ url: '/page-4/', img: "http://urlTest.com" })
/* or use
Readable.from([{url: '/page-1'}...]).pipe(smStream)
if you are looking to avoid writing your own loop.
*/
// cache the response
streamToPromise(pipeline).then(sm => sitemap = sm)
// make sure to attach a write stream such as streamToPromise before ending
smStream.end()
// stream write the response
pipeline.pipe(res).on('error', (e) => {throw e})
} catch (e) {
console.error(e)
res.status(500).end()
}
})
app.listen(3000, () => {
console.log('listening')
});
Create sitemap and index files from one large list
If you know you are definitely going to have more than 50,000 urls in your sitemap, you can use this slightly more complex interface to create a new sitemap every 45,000 entries and add that file to a sitemap index.
const { createReadStream, createWriteStream } = require('fs');
const { resolve } = require('path');
const { createGzip } = require('zlib')
const {
simpleSitemapAndIndex,
lineSeparatedURLsToSitemapOptions
} = require('sitemap')
// writes sitemaps and index out to the destination you provide.
simpleSitemapAndIndex({
hostname: 'https://example.com',
destinationDir: './',
sourceData: lineSeparatedURLsToSitemapOptions(
createReadStream('./your-data.json.txt')
),
// or (only works with node 10.17 and up)
sourceData: [{ url: '/page-1/', changefreq: 'daily'}, ...],
// or
sourceData: './your-data.json.txt',
}).then(() => {
// Do follow up actions
})
Want to customize that?
const { createReadStream, createWriteStream } = require('fs');
const { resolve } = require('path');
const { createGzip } = require('zlib')
const { Readable } = require('stream')
const {
SitemapAndIndexStream,
SitemapStream,
lineSeparatedURLsToSitemapOptions
} = require('sitemap')
const sms = new SitemapAndIndexStream({
limit: 50000, // defaults to 45k
lastmodDateOnly: false, // print date not time
// SitemapAndIndexStream will call this user provided function every time
// it needs to create a new sitemap file. You merely need to return a stream
// for it to write the sitemap urls to and the expected url where that sitemap will be hosted
getSitemapStream: (i) => {
const sitemapStream = new SitemapStream({ hostname: 'https://example.com' });
// if your server automatically serves sitemap.xml.gz when requesting sitemap.xml leave this line be
// otherwise you will need to add .gz here and remove it a couple lines below so that both the index
// and the actual file have a .gz extension
const path = `./sitemap-${i}.xml`;
const ws = sitemapStream
.pipe(createGzip()) // compress the output of the sitemap
.pipe(createWriteStream(resolve(path + '.gz'))); // write it to sitemap-NUMBER.xml
return [new URL(path, 'https://example.com/subdir/').toString(), sitemapStream, ws];
},
});
// when reading from a file
lineSeparatedURLsToSitemapOptions(
createReadStream('./your-data.json.txt')
)
.pipe(sms)
.pipe(createGzip())
.pipe(createWriteStream(resolve('./sitemap-index.xml.gz')));
// or reading straight from an in-memory array
sms
.pipe(createGzip())
.pipe(createWriteStream(resolve('./sitemap-index.xml.gz')));
const arrayOfSitemapItems = [{ url: '/page-1/', changefreq: 'daily'}, ...]
Readable.from(arrayOfSitemapItems).pipe(sms) // available as of node 10.17.0
// or
arrayOfSitemapItems.forEach(item => sms.write(item))
sms.end() // necessary to let it know you've got nothing else to write
Options you can pass
const { SitemapStream, streamToPromise } = require('sitemap');
const smStream = new SitemapStream({
hostname: 'http://www.mywebsite.com',
xslUrl: "https://example.com/style.xsl",
lastmodDateOnly: false, // print date not time
xmlns: { // trim the xml namespace
news: true, // flip to false to omit the xml namespace for news
xhtml: true,
image: true,
video: true,
custom: [
'xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"',
'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"',
],
}
})
// coalesce stream to value
// alternatively you can pipe to another stream
streamToPromise(smStream).then(console.log)
smStream.write({
url: '/page1',
changefreq: 'weekly',
priority: 0.8, // A hint to the crawler that it should prioritize this over items less than 0.8
})
// each sitemap entry supports many options
// See [Sitemap Item Options](./api.md#sitemap-item-options) below for details
smStream.write({
url: 'http://test.com/page-1/',
img: [
{
url: 'http://test.com/img1.jpg',
caption: 'An image',
title: 'The Title of Image One',
geoLocation: 'London, United Kingdom',
license: 'https://creativecommons.org/licenses/by/4.0/'
},
{
url: 'http://test.com/img2.jpg',
caption: 'Another image',
title: 'The Title of Image Two',
geoLocation: 'London, United Kingdom',
license: 'https://creativecommons.org/licenses/by/4.0/'
}
],
video: [
{
thumbnail_loc: 'http://test.com/tmbn1.jpg',
title: 'A video title',
description: 'This is a video'
},
{
thumbnail_loc: 'http://test.com/tmbn2.jpg',
title: 'A video with an attribute',
description: 'This is another video',
'player_loc': 'http://www.example.com/videoplayer.mp4?video=123',
'player_loc:autoplay': 'ap=1',
'player_loc:allow_embed': 'yes'
}
],
links: [
{ lang: 'en', url: 'http://test.com/page-1/' },
{ lang: 'ja', url: 'http://test.com/page-1/ja/' }
],
androidLink: 'android-app://com.company.test/page-1/',
news: {
publication: {
name: 'The Example Times',
language: 'en'
},
genres: 'PressRelease, Blog',
publication_date: '2008-12-23',
title: 'Companies A, B in Merger Talks',
keywords: 'business, merger, acquisition, A, B',
stock_tickers: 'NASDAQ:A, NASDAQ:B'
}
})
// indicate there is nothing left to write
smStream.end()
Examples
For more examples see the examples directory
API
Full API docs can be found here
Maintainers
License
See LICENSE file.