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  • Apps
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    • Theme revenue share
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  • Themes
    • Overview
    • Create a theme
    • Customize a theme
    • Overview
      • Overview
        • Overview
        • Customize checkout.liquid
        • Checkout CSS
      • Overview
      • JSON templates
      • article
      • blog
      • cart
      • collection
      • customers/account
      • customers/activate_account
      • customers/addresses
      • customers/login
      • customers/order
      • customers/register
      • customers/reset_password
      • gift_card.liquid
      • index
      • list-collections
      • page
      • password
      • product
      • robots.txt.liquid
      • search
      • 404
      • Overview
      • Section schema
      • App blocks
      • Section assets
      • Integrate with the theme editor
      • Overview
      • Migrate
      • Overview
      • settings_schema.json
      • settings_data.json
      • Overview
      • Schema locale files
      • Storefront locale files
      • Overview
      • Input settings
      • Sidebar settings
      • Fonts
      • Deprecated settings
    • Overview
      • Overview
      • Install
      • CI/CD
      • Commands
      • Migrate
        • Overview
        • Commands
        • Install, upgrade, or uninstall
      • Overview
      • Shopify Liquid VS Code extension
      • Configuration
      • Commands
        • Overview
        • AppBlockValidTags
        • AssetPreload
        • AssetSizeAppBlockCSS
        • AssetSizeAppBlockJavascript
        • AssetSizeCSS
        • AssetSizeCSSStylesheetTag
        • AssetSizeJavascript
        • AssetUrlFilters
        • ContentForHeaderModification
        • ConvertIncludeToRender
        • DefaultLocale
        • DeprecateBgsizes
        • DeprecateLazysizes
        • DeprecatedFilter
        • DeprecatedGlobalAppBlockType
        • HtmlParsingError
        • ImgLazyLoading
        • ImgWidthAndHeight
        • LiquidTag
        • MatchingSchemaTranslations
        • MatchingTranslations
        • MissingEnableComment
        • MissingRequiredTemplateFiles
        • MissingTemplate
        • NestedSnippet
        • PaginationSize
        • ParserBlockingJavaScript
        • ParserBlockingScriptTag
        • RemoteAsset
        • RequiredDirectories
        • RequiredLayoutThemeObject
        • SchemaJsonFormat
        • SpaceInsideBraces
        • SyntaxError
        • TemplateLength
        • TranslationKeyExists
        • UndefinedObject
        • UnknownFilter
        • UnusedAssign
        • UnusedSnippet
        • ValidHTMLTranslation
        • ValidJson
        • ValidSchema
      • Overview
      • Getting started
      • Overview
      • Optimizing themes using Theme Inspector
    • Liquid Prettier Plugin
    • Lighthouse CI
    • Theme editor
    • Code editor
    • Theme Access app
      • Overview
      • Getting started
      • Command reference
      • Configuration reference
      • Troubleshooting
      • Overview
      • Test data
      • Transfer a development store
    • Collaborator accounts
    • Dawn
    • Overview
    • Sections and blocks
      • Overview
      • Platform
    • Accessibility
    • Theme editor preview inspector
      • Overview
      • Color system
    • Merchant stores
    • Version control
    • File transformation
    • Deceptive code
  • Integrating apps
    • Overview
    • Product variants
      • Overview
      • Show product recommendations
      • Overview
      • Support product media
      • Product media UX guidelines
    • Overview
    • Discounts
      • Overview
      • Support purchase options
      • Subscription UX guidelines
      • Deferred purchase option UX guidelines
    • Shop Pay Installments
    • Accelerated checkout
    • B2B
    • Unit pricing
    • Explicit currency formatting
    • Overview
    • Pickup availability
    • Overview
    • Email consent
    • Additional customer information
    • Add contact form
    • Overview
    • Support multiple currencies and languages
    • Detect and set a visitor’s optimal localization
    • Country and language selector UX guidelines
    • Overview
    • Navigation
      • Overview
      • Predictive search
      • Predictive search UX guidelines
      • Overview
        • Overview
        • Support storefront filtering
        • Storefront filtering UX guidelines
      • Tag filtering
    • Overview
    • Metadata
    • hreflang tags
    • robots.txt
    • Overview
    • Security badges
    • Captcha
    • Cookie compliance
    • Overview
    • Assessment
    • Migration guide
  • Troubleshooting
    • Overview
    • Requirements
      • Overview
      • Testing assets
      • Testing checklist
      • Submitting a theme
      • Theme Store listings
      • Common theme rejections
      • Overview
      • Prohibited actions
      • Managing theme reviews
      • Brand asset guidance
      • Updating your theme
      • Removing a theme
    • Theme revenue share
  • Examples
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UnknownFilter

Identifies references to unknown Liquid filters.

Examples

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The following examples contain code snippets that either fail or pass this check.

✗ Fail

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✓ Pass

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