Table of contents
- Getting started
- Index sitemaps
- Splitting large sitemap into multiple files
- Configuration Options
- Custom transformation function
- Full configuration example
- Generating dynamic/server-side sitemaps
- Typescript JSDoc
Getting started
Installation
yarn add next-sitemap
Create config file
next-sitemap
requires a basic config file (next-sitemap.config.js
) under your project root
✅
next-sitemap
will load environment variables from.env
files by default.
/** @type {import('next-sitemap').IConfig} */
module.exports = {
siteUrl: process.env.SITE_URL || 'https://example.com',
generateRobotsTxt: true, // (optional)
// ...other options
}
Building sitemaps
Add next-sitemap as your postbuild script
{
"build": "next build",
"postbuild": "next-sitemap"
}
Custom config file
You can also use a custom config file instead of next-sitemap.config.js
. Just pass --config <your-config-file>.js
to build command (Example: custom-config-file)
{
"build": "next build",
"postbuild": "next-sitemap --config awesome.config.js"
}
Building sitemaps with pnpm
When using pnpm you need to create a .npmrc
file in the root of your project if you want to use a postbuild step:
//.npmrc
enable-pre-post-scripts=true
Index sitemaps (Optional)
📣 From next-sitemap
v2.x onwards, sitemap.xml
will be Index Sitemap. It will contain urls of all other generated sitemap endpoints.
Index sitemap generation can be turned off by setting generateIndexSitemap: false
in next-sitemap config file. (This is useful for small/hobby sites which does not require an index sitemap) (Example: no-index-sitemaps)
Splitting large sitemap into multiple files
Define the sitemapSize
property in next-sitemap.config.js
to split large sitemap into multiple files.
/** @type {import('next-sitemap').IConfig} */
module.exports = {
siteUrl: 'https://example.com',
generateRobotsTxt: true,
sitemapSize: 7000,
}
Above is the minimal configuration to split a large sitemap. When the number of URLs in a sitemap is more than 7000, next-sitemap
will create sitemap (e.g. sitemap-0.xml, sitemap-1.xml) and index (e.g. sitemap.xml) files.
Configuration Options
property | description | type |
---|---|---|
siteUrl | Base url of your website | string |
output (optional) | Next.js output modes. Check documentation. |
standalone , export
|
changefreq (optional) | Change frequency. Default daily
|
string |
priority (optional) | Priority. Default 0.7
|
number |
sitemapBaseFileName (optional) | The name of the generated sitemap file before the file extension. Default "sitemap"
|
string |
alternateRefs (optional) | Denote multi-language support by unique URL. Default []
|
AlternateRef[] |
sitemapSize(optional) | Split large sitemap into multiple files by specifying sitemap size. Default 5000
|
number |
autoLastmod (optional) | Add <lastmod/> property. Default true
|
true |
exclude (optional) | Array of relative paths (wildcard pattern supported) to exclude from listing on sitemap.xml or sitemap-*.xml . e.g.: ['/page-0', '/page-*', '/private/*'] . Apart from this option next-sitemap also offers a custom transform option which could be used to exclude urls that match specific patterns |
string[] |
sourceDir (optional) | next.js build directory. Default .next
|
string |
outDir (optional) | All the generated files will be exported to this directory. Default public
|
string |
transform (optional) | A transformation function, which runs for each relative-path in the sitemap. Returning null value from the transformation function will result in the exclusion of that specific path from the generated sitemap list. |
async function |
additionalPaths (optional) | Async function that returns a list of additional paths to be added to the generated sitemap list. | async function |
generateIndexSitemap | Generate index sitemaps. Default true
|
boolean |
generateRobotsTxt (optional) | Generate a robots.txt file and list the generated sitemaps. Default false
|
boolean |
robotsTxtOptions.transformRobotsTxt (optional) | Custom robots.txt transformer function. (Example: custom-robots-txt-transformer) Default: async(config, robotsTxt)=> robotsTxt
|
async function |
robotsTxtOptions.policies (optional) | Policies for generating robots.txt .Default: [{ userAgent: '*', allow: '/' }]
|
IRobotPolicy[] |
robotsTxtOptions.additionalSitemaps (optional) | Options to add additional sitemaps to robots.txt host entry |
string[] |
robotsTxtOptions.includeNonIndexSitemaps (optional) | From v2.4x onwards, generated robots.txt will only contain url of index sitemap and custom provided endpoints from robotsTxtOptions.additionalSitemaps . This is to prevent duplicate url submission (once through index-sitemap -> sitemap-url and once through robots.txt -> HOST) Set this option true to add all generated sitemap endpoints to robots.txt Default false (Recommended) |
boolean |
Custom transformation function
Custom transformation provides an extension method to add, remove or exclude path
or properties
from a url-set. Transform function runs for each relative path
in the sitemap. And use the key
: value
object to add properties in the XML.
Returning null
value from the transformation function will result in the exclusion of that specific relative-path
from the generated sitemap list.
/** @type {import('next-sitemap').IConfig} */
module.exports = {
transform: async (config, path) => {
// custom function to ignore the path
if (customIgnoreFunction(path)) {
return null
}
// only create changefreq along with path
// returning partial properties will result in generation of XML field with only returned values.
if (customLimitedField(path)) {
// This returns `path` & `changefreq`. Hence it will result in the generation of XML field with `path` and `changefreq` properties only.
return {
loc: path, // => this will be exported as http(s)://<config.siteUrl>/<path>
changefreq: 'weekly',
}
}
// Use default transformation for all other cases
return {
loc: path, // => this will be exported as http(s)://<config.siteUrl>/<path>
changefreq: config.changefreq,
priority: config.priority,
lastmod: config.autoLastmod ? new Date().toISOString() : undefined,
alternateRefs: config.alternateRefs ?? [],
}
},
}
Additional paths function
additionalPaths
this function can be useful if you have a large list of pages, but you don't want to render them all and use fallback: true. Result of executing this function will be added to the general list of paths and processed with sitemapSize
. You are free to add dynamic paths, but unlike additionalSitemap
, you do not need to split the list of paths into different files in case there are a lot of paths for one file.
If your function returns a path that already exists, then it will simply be updated, duplication will not happen.
/** @type {import('next-sitemap').IConfig} */
module.exports = {
additionalPaths: async (config) => {
const result = []
// required value only
result.push({ loc: '/additional-page-1' })
// all possible values
result.push({
loc: '/additional-page-2',
changefreq: 'yearly',
priority: 0.7,
lastmod: new Date().toISOString(),
// acts only on '/additional-page-2'
alternateRefs: [
{
href: 'https://es.example.com',
hreflang: 'es',
},
{
href: 'https://fr.example.com',
hreflang: 'fr',
},
],
})
// using transformation from the current configuration
result.push(await config.transform(config, '/additional-page-3'))
return result
},
}
Google News, image and video sitemap
Url set can contain additional sitemaps defined by google. These are
Google News sitemap,
image sitemap or
video sitemap.
You can add the values for these sitemaps by updating entry in transform
function or adding it with
additionalPaths
. You have to return a sitemap entry in both cases, so it's the best place for updating
the output. This example will add an image and news tag to each entry but IRL you would of course use it with
some condition or within additionalPaths
result.
/** @type {import('next-sitemap').IConfig} */
const config = {
transform: async (config, path) => {
return {
loc: path, // => this will be exported as http(s)://<config.siteUrl>/<path>
changefreq: config.changefreq,
priority: config.priority,
lastmod: config.autoLastmod ? new Date().toISOString() : undefined,
images: [{ loc: 'https://example.com/image.jpg' }],
news: {
title: 'Article 1',
publicationName: 'Google Scholar',
publicationLanguage: 'en',
date: new Date(),
},
}
},
}
export default config
Full configuration example
Here's an example next-sitemap.config.js
configuration with all options
/** @type {import('next-sitemap').IConfig} */
module.exports = {
siteUrl: 'https://example.com',
changefreq: 'daily',
priority: 0.7,
sitemapSize: 5000,
generateRobotsTxt: true,
exclude: ['/protected-page', '/awesome/secret-page'],
alternateRefs: [
{
href: 'https://es.example.com',
hreflang: 'es',
},
{
href: 'https://fr.example.com',
hreflang: 'fr',
},
],
// Default transformation function
transform: async (config, path) => {
return {
loc: path, // => this will be exported as http(s)://<config.siteUrl>/<path>
changefreq: config.changefreq,
priority: config.priority,
lastmod: config.autoLastmod ? new Date().toISOString() : undefined,
alternateRefs: config.alternateRefs ?? [],
}
},
additionalPaths: async (config) => [
await config.transform(config, '/additional-page'),
],
robotsTxtOptions: {
policies: [
{
userAgent: '*',
allow: '/',
},
{
userAgent: 'test-bot',
allow: ['/path', '/path-2'],
},
{
userAgent: 'black-listed-bot',
disallow: ['/sub-path-1', '/path-2'],
},
],
additionalSitemaps: [
'https://example.com/my-custom-sitemap-1.xml',
'https://example.com/my-custom-sitemap-2.xml',
'https://example.com/my-custom-sitemap-3.xml',
],
},
}
Above configuration will generate sitemaps based on your project and a robots.txt
like this.
# *
User-agent: *
Allow: /
# test-bot
User-agent: test-bot
Allow: /path
Allow: /path-2
# black-listed-bot
User-agent: black-listed-bot
Disallow: /sub-path-1
Disallow: /path-2
# Host
Host: https://example.com
# Sitemaps
Sitemap: https://example.com/sitemap.xml # Index sitemap
Sitemap: https://example.com/my-custom-sitemap-1.xml
Sitemap: https://example.com/my-custom-sitemap-2.xml
Sitemap: https://example.com/my-custom-sitemap-3.xml
Generating dynamic/server-side sitemaps
next-sitemap
now provides two APIs to generate server side sitemaps. This will help to dynamically generate index-sitemap
(s) and sitemap
(s) by sourcing data from CMS or custom source.
-
getServerSideSitemapIndex
: Generates index sitemaps based on urls provided and returnsapplication/xml
response. Supports next13+ route.{ts,js} file.- To continue using inside pages directory, import
getServerSideSitemapIndexLegacy
instead.
- To continue using inside pages directory, import
-
getServerSideSitemap
: Generates sitemap based on field entires and returnsapplication/xml
response. Supports next13+ route.{ts,js} file.- To continue using inside pages directory, import
getServerSideSitemapLegacy
instead.
- To continue using inside pages directory, import
Server side index-sitemaps (getServerSideSitemapIndex)
Here's a sample script to generate index-sitemap on server side.
1. Index sitemap (app directory)
Create app/server-sitemap-index.xml/route.ts
file.
// app/server-sitemap-index.xml/route.ts
import { getServerSideSitemapIndex } from 'next-sitemap'
export async function GET(request: Request) {
// Method to source urls from cms
// const urls = await fetch('https//example.com/api')
return getServerSideSitemapIndex([
'https://example.com/path-1.xml',
'https://example.com/path-2.xml',
])
}
2. Index sitemap (pages directory) (legacy)
Create pages/server-sitemap-index.xml/index.tsx
file.
// pages/server-sitemap-index.xml/index.tsx
import { getServerSideSitemapIndexLegacy } from 'next-sitemap'
import { GetServerSideProps } from 'next'
export const getServerSideProps: GetServerSideProps = async (ctx) => {
// Method to source urls from cms
// const urls = await fetch('https//example.com/api')
return getServerSideSitemapIndexLegacy(ctx, [
'https://example.com/path-1.xml',
'https://example.com/path-2.xml',
])
}
// Default export to prevent next.js errors
export default function SitemapIndex() {}
Exclude server index sitemap from robots.txt
Now, next.js
is serving the dynamic index-sitemap from http://localhost:3000/server-sitemap-index.xml
.
List the dynamic sitemap page in robotsTxtOptions.additionalSitemaps
and exclude this path from static sitemap list.
// next-sitemap.config.js
/** @type {import('next-sitemap').IConfig} */
module.exports = {
siteUrl: 'https://example.com',
generateRobotsTxt: true,
exclude: ['/server-sitemap-index.xml'], // <= exclude here
robotsTxtOptions: {
additionalSitemaps: [
'https://example.com/server-sitemap-index.xml', // <==== Add here
],
},
}
In this way, next-sitemap
will manage the sitemaps for all your static pages and your dynamic index-sitemap
will be listed on robots.txt.
server side sitemap (getServerSideSitemap)
Here's a sample script to generate sitemaps on server side.
1. Sitemaps (app directory)
Create app/server-sitemap.xml/route.ts
file.
// app/server-sitemap.xml/route.ts
import { getServerSideSitemap } from 'next-sitemap'
export async function GET(request: Request) {
// Method to source urls from cms
// const urls = await fetch('https//example.com/api')
return getServerSideSitemap([
{
loc: 'https://example.com',
lastmod: new Date().toISOString(),
// changefreq
// priority
},
{
loc: 'https://example.com/dynamic-path-2',
lastmod: new Date().toISOString(),
// changefreq
// priority
},
])
}
2. Sitemaps (pages directory) (legacy)
Create pages/server-sitemap.xml/index.tsx
file.
// pages/server-sitemap.xml/index.tsx
import { getServerSideSitemapLegacy } from 'next-sitemap'
import { GetServerSideProps } from 'next'
export const getServerSideProps: GetServerSideProps = async (ctx) => {
// Method to source urls from cms
// const urls = await fetch('https//example.com/api')
const fields = [
{
loc: 'https://example.com', // Absolute url
lastmod: new Date().toISOString(),
// changefreq
// priority
},
{
loc: 'https://example.com/dynamic-path-2', // Absolute url
lastmod: new Date().toISOString(),
// changefreq
// priority
},
]
return getServerSideSitemapLegacy(ctx, fields)
}
// Default export to prevent next.js errors
export default function Sitemap() {}
Now, next.js
is serving the dynamic sitemap from http://localhost:3000/server-sitemap.xml
.
List the dynamic sitemap page in robotsTxtOptions.additionalSitemaps
and exclude this path from static sitemap list.
// next-sitemap.config.js
/** @type {import('next-sitemap').IConfig} */
module.exports = {
siteUrl: 'https://example.com',
generateRobotsTxt: true,
exclude: ['/server-sitemap.xml'], // <= exclude here
robotsTxtOptions: {
additionalSitemaps: [
'https://example.com/server-sitemap.xml', // <==== Add here
],
},
}
In this way, next-sitemap
will manage the sitemaps for all your static pages and your dynamic sitemap will be listed on robots.txt.
Typescript JSDoc
Add the following line of code in your next-sitemap.config.js
for nice typescript autocomplete! 💖
/** @type {import('next-sitemap').IConfig} */
module.exports = {
// YOUR CONFIG
}
Contribution
All PRs are welcome :)