Svelte Meta Tags provides components designed to help you manage SEO for Svelte projects.
This library is inspired by next-seo
Table of Contents
📦 Installing
npm install -D svelte-meta-tagsor
yarn add -D svelte-meta-tagsor
pnpm add -D svelte-meta-tags🚀 Usage
Example with just title and description:
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags title="Example Title" description="Example Description." />Typical page example:
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
title="Using More of Config"
titleTemplate="%s | Svelte Meta Tags"
description="This example uses more of the available config options."
canonical="https://www.canonical.ie/"
openGraph={{
url: 'https://www.url.ie/a',
title: 'Open Graph Title',
description: 'Open Graph Description',
images: [
{
url: 'https://www.example.ie/og-image-01.jpg',
width: 800,
height: 600,
alt: 'Og Image Alt'
},
{
url: 'https://www.example.ie/og-image-02.jpg',
width: 900,
height: 800,
alt: 'Og Image Alt Second'
},
{ url: 'https://www.example.ie/og-image-03.jpg' },
{ url: 'https://www.example.ie/og-image-04.jpg' }
],
site_name: 'SiteName'
}}
twitter={{
handle: '@handle',
site: '@site',
cardType: 'summary_large_image',
title: 'Using More of Config',
description: 'This example uses more of the available config options.',
image: 'https://www.example.ie/twitter-image.jpg',
imageAlt: 'Twitter image alt'
}}
facebook={{
appId: '1234567890'
}}
/>MetaTags Properties
| Property | Type | Description |
|---|---|---|
title |
string | Sets the meta title of the page |
titleTemplate |
string | Allows you to set the default title template that will be added to your title More Info |
noindex |
boolean (default false) | Specifies whether the page should be indexed or not |
nofollow |
boolean (default false) | Specifies whether or not to follow the page |
additionRobotsProps |
Object | Set the additional meta information for the X-Robots-Tag More Info |
description |
string | Sets the meta description of the page |
canonical |
string | Make the page canonical URL |
mobileAlternate.media |
string | Set the screen size from which the mobile site will be served |
mobileAlternate.href |
string | Set the alternate URL for the mobile page |
languageAlternates |
array | Set the language of the alternate urls. Expects array of objects with the shape: { hrefLang: string, href: string } |
additionalMetaTags |
array | Allows you to add a meta tag that is not documented here More Info |
additionalLinkTags |
array | Allows you to add a link tag that is not documented here More Info |
twitter.cardType |
string | The card type, which will be one of summary, summary_large_image, app, or player |
twitter.site |
string | @username for the website used in the card footer |
twitter.handle |
string | @username for the creator of the content (output as twitter:creator) |
twitter.title |
string | The concise title for the related content |
twitter.description |
string | The description that concisely summarizes the content in a manner suitable for presentation within a Tweet. You should not reuse the title as the description or use this field to describe the general services provided by the website |
twitter.image |
string | The URL to a unique image that represents the content of the page. You should not use a generic image such as your site logo, author photo, or other image that spans multiple pages. Images for this card support a 1:1 aspect ratio with a minimum size of 144x144 pixels or a maximum size of 4096x4096 pixels. Images must be less than 5MB in size. The image will be cropped to a square on all platforms. JPG, PNG, WEBP, and GIF formats are supported. Only the first frame of an animated GIF is used. SVG is not supported |
twitter.imageAlt |
string | The textual description of the image that conveys the essence of the image to visually impaired users. Maximum 420 characters |
facebook.appId |
string | For Facebook Insights, you will need to add a Facebook app ID to your page in order to use it |
openGraph.url |
string | The canonical URL of your object, which will be used as its permanent ID in the graph |
openGraph.type |
string | The type of your object. Depending on the type you specify, other properties may also be required More Info |
openGraph.title |
string | The open graph title, this can be different from your meta title |
openGraph.description |
string | The open graph description, which may be different from your meta description |
openGraph.images |
array | An array of images to use as previews. If multiple are provided, you can choose one when sharing See Examples |
openGraph.videos |
array | An array of videos (object) |
openGraph.locale |
string | The locale in which the open graph tags are highlighted |
openGraph.site_name |
string | If your item is part of a larger website, the name that should be displayed for the entire site |
openGraph.profile.firstName |
string | Person's first name |
openGraph.profile.lastName |
string | Person's last name |
openGraph.profile.username |
string | Person's username |
openGraph.profile.gender |
string | Person's gender |
openGraph.book.authors |
string[] | Author of the article See Examples |
openGraph.book.isbn |
string | The ISBN |
openGraph.book.releaseDate |
datetime | The date the book was released |
openGraph.book.tags |
string[] | Tag words related to this book |
openGraph.article.publishedTime |
datetime | When the article was first published See Examples |
openGraph.article.modifiedTime |
datetime | When the item was last modified |
openGraph.article.expirationTime |
datetime | When the article is out of date after |
openGraph.article.authors |
string[] | Author of the article |
openGraph.article.section |
string | A high-level section name. E.g. Technology |
openGraph.article.tags |
string[] | Tag words associated with this article |
Title Template
Replace %s with your title string.
title = 'This is my title'
titleTemplate = 'Svelte Meta Tags | %s'
// outputs: Svelte Meta Tags | This is my title
title = 'This is my title'
titleTemplate = '%s | Svelte Meta Tags'
// outputs: This is my title | Svelte Meta Tags
twitter={{
handle: '@handle',
site: '@site',
cardType: 'summary_large_image',
title: 'Twitter',
description: 'Twitter',
image: 'https://www.example.ie/twitter-image.jpg',
imageAlt: 'Twitter image alt'
}}See out the Twitter documentation for more information.
facebook={{
appId: '1234567890',
}}Add this to your SEO config to include the fb:app_id meta if you need to enable Facebook Insights for your site. Information on this can be found in Facebook's documentation.
robotsProps
In addition to index, follow', the robots' meta tag accepts more properties to archive more accurate crawling and serve better snippets to SEO bots crawling your page.
Example:
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
robotsProps={{
noarchive: true,
nosnippet: true,
maxSnippet: -1,
maxImagePreview: 'none',
maxVideoPreview: -1,
notranslate: true,
noimageindex: true,
unavailableAfter: '25 Jun 2010 15:00:00 PST'
}}
/>Available properties
| Property | Type | Description |
|---|---|---|
noarchive |
boolean | Do not display a cached link in search results |
nosnippet |
boolean | Do not show a text snippet or video preview in the search results for this page |
maxSnippet |
number | Use a maximum of [number] characters as the text snippet for this search result Read more |
maxImagePreview |
'none','standard','large' | Set the maximum size of an image preview for this page in a search result |
maxVideoPreview |
number | Use a maximum of [number] seconds as a video snippet for videos on this page in search results Read more |
notranslate |
boolean | Do not offer translation of this page in search results |
noimageindex |
boolean | Do not index images on this page |
unavailableAfter |
string | Do not show this page in search results after the specified date/time. The date/time must be in a widely accepted format, including but not limited to RFC 822, RFC 850, and ISO 8601 |
For more information on the X-Robots-Tag visit Google Search Central - Control Crawling and Indexing
Alternate
This link relationship is used to indicate a relationship between a desktop and mobile website to search engines.
Example:
mobileAlternate={{
media: 'only screen and (max-width: 640px)',
href: 'https://m.canonical.ie'
}}languageAlternates={[
{
hrefLang: 'de-AT',
href: 'https://www.canonical.ie/de'
}
]}Additional Meta Tags
This allows you to add any other meta tags that are not required by the config.
content is required. Then either name, property or httpEquiv. (only one of each)
Example:
additionalMetaTags={[
{
property: 'dc:creator',
content: 'Jane Doe'
},
{
name: 'application-name',
content: 'Svelte-Meta-Tags'
},
{
httpEquiv: 'x-ua-compatible',
content: 'IE=edge; chrome=1'
}
]}Invalid Examples:
These are invalid because they contain more than one of name, property, and httpEquiv in the same entry.
additionalMetaTags={[
{
property: 'dc:creator',
name: 'dc:creator',
content: 'Jane Doe'
},
{
property: 'application-name',
httpEquiv: 'application-name',
content: 'Svelte-Meta-Tags'
}
]}One thing to note on this is that it currently only supports unique tags.
This means it will only render one tag per unique name / property / httpEquiv. The last one defined will be rendered.
Example:
If you pass:
additionalMetaTags={[
{
property: 'dc:creator',
content: 'John Doe'
},
{
property: 'dc:creator',
content: 'Jane Doe'
}
]}it will result in this being rendered:
<meta property="dc:creator" content="Jane Doe" />,Additional Link Tags
This allows you to add any other link tags that are not covered in the config.
rel and href is required.
Example:
additionalLinkTags={[
{
rel: 'icon',
href: 'https://www.test.ie/favicon.ico'
},
{
rel: 'apple-touch-icon',
href: 'https://www.test.ie/touch-icon-ipad.jpg',
sizes: '76x76'
},
{
rel: 'manifest',
href: 'https://www.test.ie/manifest.json'
}
]}it will result in this being rendered:
<link rel="icon" href="https://www.test.ie/favicon.ico" />
<link rel="apple-touch-icon" href="https://www.test.ie/touch-icon-ipad.jpg" sizes="76x76" />
<link rel="manifest" href="https://www.test.ie/manifest.json" />Open Graph
The full specification can be found at http://ogp.me/.
Svelte Meta Tags currently supports:
Open Graph Examples
Basic
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
openGraph={{
type: 'website',
url: 'https://www.example.com/page',
title: 'Open Graph Title',
description: 'Open Graph Description',
images: [
{
url: 'https://www.example.ie/og-image.jpg',
width: 800,
height: 600,
alt: 'Og Image Alt'
},
{
url: 'https://www.example.ie/og-image-2.jpg',
width: 800,
height: 600,
alt: 'Og Image Alt 2'
}
]
}}
/>Video
Full info on http://ogp.me/
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
title="Video Page Title"
description="Description of video page"
openGraph={{
title: 'Open Graph Video Title',
description: 'Description of open graph video',
url: 'https://www.example.com/videos/video-title',
type: 'video.movie',
video: {
actors: [
{
profile: 'https://www.example.com/actors/@firstnameA-lastnameA',
role: 'Protagonist'
},
{
profile: 'https://www.example.com/actors/@firstnameB-lastnameB',
role: 'Antagonist'
}
],
directors: [
'https://www.example.com/directors/@firstnameA-lastnameA',
'https://www.example.com/directors/@firstnameB-lastnameB'
],
writers: [
'https://www.example.com/writers/@firstnameA-lastnameA',
'https://www.example.com/writers/@firstnameB-lastnameB'
],
duration: 680000,
releaseDate: '2022-12-21T22:04:11Z',
tags: ['Tag A', 'Tag B', 'Tag C']
},
site_name: 'SiteName'
}}
/>Article
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
openGraph={{
title: 'Open Graph Article Title',
description: 'Description of open graph article',
url: 'https://www.example.com/articles/article-title',
type: 'article',
article: {
publishedTime: '2017-06-21T23:04:13Z',
modifiedTime: '2018-01-21T18:04:43Z',
expirationTime: '2022-12-21T22:04:11Z',
section: 'Section II',
authors: [
'https://www.example.com/authors/@firstnameA-lastnameA',
'https://www.example.com/authors/@firstnameB-lastnameB'
],
tags: ['Tag A', 'Tag B', 'Tag C']
},
images: [
{
url: 'https://www.test.ie/images/cover.jpg',
width: 850,
height: 650,
alt: 'Photo of text'
}
]
}}
/>Book
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
openGraph={{
title: 'Open Graph Book Title',
description: 'Description of open graph book',
url: 'https://www.example.com/books/book-title',
type: 'book',
book: {
releaseDate: '2018-09-17T11:08:13Z',
isbn: '978-3-16-148410-0',
authors: [
'https://www.example.com/authors/@firstnameA-lastnameA',
'https://www.example.com/authors/@firstnameB-lastnameB'
],
tags: ['Tag A', 'Tag B', 'Tag C']
},
images: [
{
url: 'https://www.test.ie/images/book.jpg',
width: 850,
height: 650,
alt: 'Cover of the book'
}
]
}}
/>Profile
<script>
import { MetaTags } from 'svelte-meta-tags';
</script>
<MetaTags
openGraph={{
title: 'Open Graph Profile Title',
description: 'Description of open graph profile',
url: 'https://www.example.com/@firstlast123',
type: 'profile',
profile: {
firstName: 'First',
lastName: 'Last',
username: 'firstlast123',
gender: 'female'
},
images: [
{
url: 'https://www.test.ie/images/profile.jpg',
width: 850,
height: 650,
alt: 'Profile Photo'
}
]
}}
/>JSON-LD
JSON-LD allows for more customized and richer display, such as in search results.
To discover all the different content types that JSON-LD offers, go to: https://developers.google.com/search/docs/guides/search-gallery
Tips: If you want to handle multiple JSON-LDs on one page, pass an array to the schema.
Using schema-dts
This plugin uses schema-dts, so it provides other types than the examples below.
JSON-LD Properties
| Property | Type | Description |
|---|---|---|
output |
string (default head) | Specifies whether to output json-ld in <head> or <body>. Possible values are either head or body |
schema |
Object | Data in ld+json format See Examples |
JSON-LD Examples
Article
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'Article',
mainEntityOfPage: {
'@type': 'WebPage',
'@id': 'https://example.com/article'
},
headline: 'Article headline',
image: [
'https://example.com/photos/1x1/photo.jpg',
'https://example.com/photos/4x3/photo.jpg',
'https://example.com/photos/16x9/photo.jpg'
],
datePublished: '2015-02-05T08:00:00+08:00',
dateModified: '2015-02-05T09:20:00+08:00',
author: {
'@type': 'Person',
name: 'John Doe'
},
publisher: {
'@type': 'Organization',
name: 'Google',
logo: {
'@type': 'ImageObject',
url: 'https://example.com/logo.jpg'
}
}
}}
/>Breadcrumb
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'BreadcrumbList',
itemListElement: [
{
'@type': 'ListItem',
position: 1,
name: 'Books',
item: 'https://example.com/books'
},
{
'@type': 'ListItem',
position: 2,
name: 'Science Fiction',
item: 'https://example.com/books/sciencefiction'
},
{
'@type': 'ListItem',
position: 3,
name: 'Award Winners'
}
]
}}
/>Product
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'Product',
name: 'Executive Anvil',
image: [
'https://example.com/photos/1x1/photo.jpg',
'https://example.com/photos/4x3/photo.jpg',
'https://example.com/photos/16x9/photo.jpg'
],
description:
"Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height.",
sku: '0446310786',
mpn: '925872',
brand: {
'@type': 'Brand',
name: 'ACME'
},
review: {
'@type': 'Review',
reviewRating: {
'@type': 'Rating',
ratingValue: '4',
bestRating: '5'
},
author: {
'@type': 'Person',
name: 'Fred Benson'
}
},
aggregateRating: {
'@type': 'AggregateRating',
ratingValue: '4.4',
reviewCount: '89'
},
offers: {
'@type': 'Offer',
url: 'https://example.com/anvil',
priceCurrency: 'USD',
price: '119.99',
priceValidUntil: '2020-11-20',
itemCondition: 'https://schema.org/UsedCondition',
availability: 'https://schema.org/InStock'
}
}}
/>Course
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'Course',
name: 'Introduction to Computer Science and Programming',
description: 'Introductory CS course laying out the basics.',
provider: {
'@type': 'Organization',
name: 'University of Technology - Eureka',
sameAs: 'http://www.ut-eureka.edu'
}
}}
/>DataSet
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'Dataset',
name: 'name of the dataset',
description: 'The description needs to be at least 50 characters long',
license: 'https//www.example.com'
}}
/>FAQ
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={{
'@type': 'FAQPage',
mainEntity: [
{
'@type': 'Question',
name: 'How long is the delivery time?',
acceptedAnswer: {
'@type': 'Answer',
text: '3-5 business days.'
}
},
{
'@type': 'Question',
name: 'Where can I find information about product recalls?',
acceptedAnswer: {
'@type': 'Answer',
text: 'Read more on under information.'
}
}
]
}}
/>JSON-LD Multiple Examples
<script>
import { JsonLd } from 'svelte-meta-tags';
</script>
<JsonLd
schema={[
{
'@type': 'BreadcrumbList',
itemListElement: [
{
'@type': 'ListItem',
position: 1,
name: 'Books',
item: 'https://example.com/books'
},
{
'@type': 'ListItem',
position: 2,
name: 'Science Fiction',
item: 'https://example.com/books/sciencefiction'
},
{
'@type': 'ListItem',
position: 3,
name: 'Award Winners'
}
]
},
{
'@type': 'NewsArticle',
mainEntityOfPage: {
'@type': 'WebPage',
'@id': 'https://google.com/article'
},
headline: 'Article headline',
image: [
'https://example.com/photos/1x1/photo.jpg',
'https://example.com/photos/4x3/photo.jpg',
'https://example.com/photos/16x9/photo.jpg'
],
datePublished: '2015-02-05T08:00:00+08:00',
dateModified: '2015-02-05T09:20:00+08:00',
author: {
'@type': 'Person',
name: 'John Doe'
},
publisher: {
'@type': 'Organization',
name: 'Google',
logo: {
'@type': 'ImageObject',
url: 'https://google.com/logo.jpg'
}
}
}
]}
/>Types
The following types can be imported from svelte-meta-tags
MetaTagsProps
interface MetaTagsProps {
title?: string;
titleTemplate?: string;
noindex?: boolean;
nofollow?: boolean;
robotsProps?: AdditionalRobotsProps;
description?: string;
canonical?: string;
mobileAlternate?: MobileAlternate;
languageAlternates?: ReadonlyArray<LanguageAlternate>;
twitter?: Twitter;
facebook?: Facebook;
openGraph?: OpenGraph;
additionalMetaTags?: ReadonlyArray<MetaTag>;
additionalLinkTags?: ReadonlyArray<LinkTag>;
}JsonLdProps
interface JsonLdProps {
output?: 'head' | 'body';
schema?: Thing | WithContext<Thing> | Thing[] | WithContext<Thing>[];
}AdditionalRobotsProps
interface AdditionalRobotsProps {
nosnippet?: boolean;
maxSnippet?: number;
maxImagePreview?: 'none' | 'standard' | 'large';
maxVideoPreview?: number;
noarchive?: boolean;
unavailableAfter?: string;
noimageindex?: boolean;
notranslate?: boolean;
}MobileAlternate
interface MobileAlternate {
media: string;
href: string;
}LanguageAlternate
interface LanguageAlternate {
hrefLang: string;
href: string;
}interface Twitter {
cardType?: 'summary' | 'summary_large_image' | 'app' | 'player';
site?: string;
handle?: string;
title?: string;
description?: string;
image?: string;
imageAlt?: string;
}interface Facebook {
appId?: string;
}OpenGraph
interface OpenGraph {
url?: string;
type?: string;
title?: string;
description?: string;
images?: ReadonlyArray<OpenGraphImages>;
videos?: ReadonlyArray<OpenGraphVideos>;
locale?: string;
site_name?: string;
profile?: OpenGraphProfile;
book?: OpenGraphBook;
article?: OpenGraphArticle;
video?: OpenGraphVideo;
}MetaTag
type MetaTag = HTML5MetaTag | RDFaMetaTag | HTTPEquivMetaTag;LinkTag
interface LinkTag {
rel: string;
href: string;
sizes?: string;
type?: string;
color?: string;
}Additional types
The following are referenced by the public types documented above, but cannot be imported directly
OpenGraphImages
interface OpenGraphImages {
url: string;
alt?: string;
width?: number;
height?: number;
}OpenGraphVideos
interface OpenGraphVideos {
url: string;
alt?: string;
width?: number;
height?: number;
secureUrl?: string;
type?: string;
}OpenGraphProfile
interface OpenGraphProfile {
firstName?: string;
lastName?: string;
username?: string;
gender?: string;
}OpenGraphBook
interface OpenGraphBook {
authors?: ReadonlyArray<string>;
isbn?: string;
releaseDate?: string;
tags?: ReadonlyArray<string>;
}OpenGraphArticle
interface OpenGraphArticle {
publishedTime?: string;
modifiedTime?: string;
expirationTime?: string;
authors?: ReadonlyArray<string>;
section?: string;
tags?: ReadonlyArray<string>;
}OpenGraphVideo
interface OpenGraphVideo {
actors?: ReadonlyArray<OpenGraphVideoActors>;
directors?: ReadonlyArray<string>;
writers?: ReadonlyArray<string>;
duration?: number;
releaseDate?: string;
tags?: ReadonlyArray<string>;
series?: string;
}OpenGraphVideoActors
interface OpenGraphVideoActors {
profile: string;
role?: string;
}BaseMetaTag
interface BaseMetaTag {
content: string;
}HTML5MetaTag
interface HTML5MetaTag extends BaseMetaTag {
name: string;
property?: undefined;
httpEquiv?: undefined;
}RDFaMetaTag
interface RDFaMetaTag extends BaseMetaTag {
property: string;
name?: undefined;
httpEquiv?: undefined;
}HTTPEquivMetaTag
interface HTTPEquivMetaTag extends BaseMetaTag {
httpEquiv: 'content-security-policy' | 'content-type' | 'default-style' | 'x-ua-compatible' | 'refresh';
name?: undefined;
property?: undefined;
}License
MIT