Title: WPSSO Core – Complete Schema Markup and Meta Tags Author: JS Morisset Published: December 29, 2013 Last modified: April 11, 2026 --- Search plugins ![](https://ps.w.org/wpsso/assets/banner-772x250.jpg?rev=3312273) ![](https://ps.w.org/wpsso/assets/icon-256x256.png?rev=3167695) # WPSSO Core – Complete Schema Markup and Meta Tags By [JS Morisset](https://profiles.wordpress.org/jsmoriss/) [Download](https://downloads.wordpress.org/plugin/wpsso.21.13.0.zip) * [Details](https://scn.wordpress.org/plugins/wpsso/#description) * [Reviews](https://scn.wordpress.org/plugins/wpsso/#reviews) * [Installation](https://scn.wordpress.org/plugins/wpsso/#installation) * [Development](https://scn.wordpress.org/plugins/wpsso/#developers) [Support](https://wordpress.org/support/plugin/wpsso/) ## Description ### Complete Schema Markup and Meta Tags for WordPress Present your content at its best for social sites and search results, no matter how URLs are shared, reshared, messaged, posted, embedded, or crawled. **The most comprehensive and accurate Schema markup plugin for WooCommerce products.** Supports over 500 different Schema types and sub-types (including Schema Event, Product Group, and the Service type for WooCommerce products). **Provides complete Schema markup and meta tags for:** * Facebook / Open Graph * Google Knowledge Graph * Google Merchant Feed XML * Google Rich Results / Rich Snippets * Image and Video SEO * Instagram Catalog Feed XMLs * Meta (Facebook and Instagram) Catalog Feed XMLs * Mobile Web Browsers * oEmbed for LinkedIn, Discord, and Drupal * Pinterest Rich Pins * Schema JSON-LD Markup * Slack * WhatsApp and Messaging Apps * WordPress REST API * WordPress Sitemaps XML * X (Twitter) Cards **Fixes all Google Rich Results and Google Merchant errors, including:** * _A value for the headline field is required_ * _A value for the image field is required_ * _A value for the logo field is required_ * _A value for the publisher field is required_ * _Either “price” or “priceSpecification” should be specified (in “offers”)_ * _Invalid value in field “priceSpecification”_ * _The aggregateRating field is recommended_ * _The brand field is recommended_ * _The headline field is recommended_ * _The image field is recommended_ * _The review field is recommended_ * _Missing field “address”_ * _Missing field “aggregateRating”_ * _Missing field “brand”_ * _Missing field “businessDays”_ * _Missing field “cutoffTime”_ * _Missing field “deliveryTime”_ * _Missing field “hasMerchantReturnPolicy” (in “offers”)_ * _Missing field “image”_ * _Missing field “priceRange”_ * _Missing field “review”_ * _Missing field “shippingDetails” (in “offers”)_ * _Missing field “telephone”_ * _No global identifier provided (e.g. gtin mpn isbn)_ * _Not a known valid target type for the itemReviewed property_ * _Price Mismatched value (page crawl): (price [price])_ **Optimized image sizes for social sites and search engines:** * Commerce Manager Catalog Feed XML (Facebook and Instagram) * Google Merchant Feed XML * Open Graph (Facebook and oEmbed) * Pinterest Pin It * Schema 1:1 (Google Rich Results) * Schema 4:3 (Google Rich Results) * Schema 16:9 (Google Rich Results) * Schema Thumbnail * Video Preview Image * X (Twitter) Summary Card * X (Twitter) Summary Card Large Image **Reads additional information from active plugins, including:** * [Co-Authors Plus](https://wordpress.org/plugins/co-authors-plus/) * [Elementor Website Builder](https://wordpress.org/plugins/elementor/) * Gravity Forms * Gravity View * [Jetpack](https://wordpress.org/plugins/jetpack/) * [Jetpack Boost](https://wordpress.org/plugins/jetpack-boost/) * [Judge.me Product Reviews for WooCommerce](https://wordpress.org/plugins/judgeme-product-reviews-woocommerce/) * [Perfect Images](https://wordpress.org/plugins/wp-retina-2x/) * [Perfect Brands for WooCommerce](https://wordpress.org/plugins/perfect-woocommerce-brands/) * [Polylang](https://wordpress.org/plugins/polylang/) * Product GTIN (EAN, UPC, ISBN) for WooCommerce * [PublishPress Authors](https://wordpress.org/plugins/publishpress-authors) * qTranslate-XT * [Rate my Post](https://wordpress.org/plugins/rate-my-post/) * [Simple Job Board](https://wordpress.org/plugins/simple-job-board/) * [The Events Calendar](https://wordpress.org/plugins/the-events-calendar/) * [Ultimate Member](https://wordpress.org/plugins/ultimate-member/) * [WooCommerce](https://wordpress.org/plugins/woocommerce/) * WooCommerce Brands * WooCommerce Currency Switcher * WooCommerce UPC, EAN, and ISBN * [WP Job Manager](https://wordpress.org/plugins/wp-job-manager/) * [WP-PostRatings](https://wordpress.org/plugins/wp-postratings/) * WP Product Review * [WP Recipe Maker](https://wordpress.org/plugins/wp-recipe-maker/) * WPML * [YITH WooCommerce Brands Add-on](https://wordpress.org/plugins/yith-woocommerce-brands-add-on/) * [Yotpo Social Reviews for WooCommerce](https://wordpress.org/plugins/yotpo-social-reviews-for-woocommerce/) **Supports additional WooCommerce product attributes:** * Product Adult Type * Product Age Group * Product Availability * Product Brand * Product Google Category ID * Product Color * Product Condition * Product Currency * Product Energy Rating * Product Fluid Volume * Product GTIN-14 * Product GTIN-13 (EAN) * Product GTIN-12 (UPC) * Product GTIN-8 * Product GTIN * Product Net Height * Product ISBN * Product Net Len. / Depth * Product Material * Product MPN * Product Min Advert Price * Product Pattern * Product Price * Product Price Type * Product SKU * Product Shipping Height * Product Shipping Length * Product Shipping Weight * Product Shipping Width * Product Size * Product Size Group * Product Size System * Product Target Gender * Product Net Weight * Product Net Width **Optionally improves the structured data markup of other SEO plugins:** WPSSO Core and its add-ons can also run in combination with other SEO plugins to improve their performance and structured data markup. * All in One SEO Pack * Rank Math SEO * SEOPress * The SEO Framework * WP Meta SEO * Yoast SEO **Premium edition can retrieve data from service APIs automatically, including:** * Bitly Short URL * DLMY.App Short URL * Facebook Video Data * Gravatar Image Data * Judge.me Review Data * Ow.ly Short URL * Shopper Approved Review Data * Slideshare Presentation Data * Soundcloud Track Data * Stamped.io Review Data * TinyURL Short URL * Vimeo Video Data * Wistia Video Data * WP Media Library Video Block Data * WP Media Library Video Shortcode Data * Your Own URL Shortener (YOURLS) Short URL * YouTube Video and Playlist Data ## Screenshots * [[ * The Essential, General, and Advanced settings pages provide all the options you may need, from simple blog sites to advanced e-commerce shops and everything in-between. ## Installation ### Install and Uninstall * [Install the WPSSO Core Plugin](https://wpsso.com/docs/plugins/wpsso/installation/install-the-plugin/) * [Uninstall the WPSSO Core Plugin](https://wpsso.com/docs/plugins/wpsso/installation/uninstall-the-plugin/) ### Plugin Setup * [Setup Guide](https://wpsso.com/docs/plugins/wpsso/installation/setup-guide/) * [Developer Special: Buy one, Get one Free](https://wpsso.com/docs/plugins/wpsso/installation/developer-special-buy-one-get-one-free/) * [Better Schema Markup for WooCommerce](https://wpsso.com/docs/plugins/wpsso/installation/better-schema-for-woocommerce/) * [Troubleshooting Guide](https://wpsso.com/docs/plugins/wpsso/installation/troubleshooting-guide/) ## FAQ ### Frequently Asked Questions * [Does LinkedIn read Facebook / Open Graph meta tags?](https://wpsso.com/docs/plugins/wpsso/faqs/does-linkedin-read-the-open-graph-meta-tags/) * [How can I fix a ERR_TOO_MANY_REDIRECTS error?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-fix-a-err_too_many_redirects-error/) * [How can I fix a generic HTTP 500 error?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-fix-a-generic-http-500-error/) * [How can I fix a PHP fatal “out of memory” error?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-fix-a-php-fatal-out-of-memory-error/) * [How can I fix an HTTP error when uploading images?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-fix-an-http-error-when-uploading-images/) * [How can I have smaller dimensions for the default image?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-have-smaller-dimensions-for-the-default-image/) * [How can I see what the Facebook crawler sees?](https://wpsso.com/docs/plugins/wpsso/faqs/how-can-i-see-what-the-facebook-crawler-sees/) * [How do I create a Schema FAQPage?](https://wpsso.com/docs/plugins/wpsso/faqs/how-do-i-create-a-schema-faqpage/) * [How do I enable WordPress WP_DEBUG?](https://wpsso.com/docs/plugins/wpsso/faqs/how-do-i-enable-wordpress-wp_debug/) * [How do I remove duplicate meta tags?](https://wpsso.com/docs/plugins/wpsso/faqs/how-do-i-remove-duplicate-meta-tags/) * [How does WPSSO Core find and select images?](https://wpsso.com/docs/plugins/wpsso/faqs/how-does-wpsso-find-detect-select-images/) * [How does WPSSO Core find and select videos?](https://wpsso.com/docs/plugins/wpsso/faqs/how-does-wpsso-find-detect-select-videos/) * [W3C says “there is no attribute ‘property’”](https://wpsso.com/docs/plugins/wpsso/faqs/w3c-says-there-is-no-attribute-property/) * [Why are some HTML elements missing or misaligned?](https://wpsso.com/docs/plugins/wpsso/faqs/why-are-some-html-elements-missing-misaligned-different/) * [Why does Facebook show the wrong image / text?](https://wpsso.com/docs/plugins/wpsso/faqs/why-does-facebook-show-the-wrong-image-text/) * [Why does the Schema Markup Validator show errors?](https://wpsso.com/docs/plugins/wpsso/faqs/why-does-google-structured-data-testing-tool-show-errors/) * [Why shouldn’t I upload small images to the media library?](https://wpsso.com/docs/plugins/wpsso/faqs/why-shouldnt-i-upload-small-images-to-the-media-library/) ### Notes and Documentation * [Developer Resources](https://wpsso.com/docs/plugins/wpsso/notes/developer/) - [$mod Variable](https://wpsso.com/docs/plugins/wpsso/notes/developer/the-mod-variable/) - [Actions](https://wpsso.com/docs/plugins/wpsso/notes/developer/actions/) - [Constants](https://wpsso.com/docs/plugins/wpsso/notes/developer/constants/) - [Filters](https://wpsso.com/docs/plugins/wpsso/notes/developer/filters/) * [Inline Variables](https://wpsso.com/docs/plugins/wpsso/notes/inline-variables/) * [Multisite / Network Support](https://wpsso.com/docs/plugins/wpsso/notes/multisite-network-support/) ## Reviews ![](https://secure.gravatar.com/avatar/74965e7715e4245da6032e8713c95c3fe58b7870621d97386e74d2a4eee25aa1? s=60&d=retro&r=g) ### 󠀁[Does what it’s supposed to do](https://wordpress.org/support/topic/does-what-its-supposed-to-do-76/)󠁿 [dennywuh](https://profiles.wordpress.org/dennywuh/) March 25, 2026 A simple plugin that serves its purpose satisfactorily. ![](https://secure.gravatar.com/avatar/ec59a2c44f8dd28f9d8dc0d1d5b603bbf4b00dd1ad569ce40032f03a0fbc221a? s=60&d=retro&r=g) ### 󠀁[Страхотен плъгин](https://wordpress.org/support/topic/%d1%81%d1%82%d1%80%d0%b0%d1%85%d0%be%d1%82%d0%b5%d0%bd-%d0%bf%d0%bb%d1%8a%d0%b3%d0%b8%d0%bd-6/)󠁿 [ilinor](https://profiles.wordpress.org/ilinor/) March 7, 2026 Страхотен плъгин ![](https://secure.gravatar.com/avatar/818d1daf8cc0715ad12f5b82c3d350c49863c1e50364ea8ba085b0517d94ccca? s=60&d=retro&r=g) ### 󠀁[Great plugin](https://wordpress.org/support/topic/great-plugin-41227/)󠁿 [dzubovic](https://profiles.wordpress.org/dzubovic/) January 24, 2026 1 reply Great plugin ![](https://secure.gravatar.com/avatar/302adfb99a1f7c02211570d3b74cc5d9ed1cb7e81dfcd2d5c05773cee69c0a91? s=60&d=retro&r=g) ### 󠀁[Fantastic Plugin & Exceptional Support](https://wordpress.org/support/topic/fantastic-plugin-exceptional-support-3/)󠁿 [scottlin74](https://profiles.wordpress.org/scottlin74/) December 25, 2025 This is a really great plugin. Between the plugin and the add-ons this covers an enormous amount of really really important stuff if you want to get noticed in search engines and online shopping platforms. Do you really need to worry about it? YES! It may be a little tricky at times but it is so important to your sites ability to be found. The customer service has been sensational with the developer going over and above to fix any little problems almost instantly. I had an issue related to the plugin playing nicely with Yoast and in the process of fixing it the developer realised Yoast had made a very subtle change that was causing my issue. Nothing major but important to me coz of how i was using the plugin. They immediately coded a fix and released it under 24 hours later. Now that is something you rarely see, speedy WP devs!10/10 A++++ Highly recommend ![](https://secure.gravatar.com/avatar/867b0c269c22df6a87608856c1f421187d6b1bfb6ec81714ffdea1a0690b0ccc? s=60&d=retro&r=g) ### 󠀁[Too Many Notices, Poor Support Attitude](https://wordpress.org/support/topic/too-many-notices-poor-support-attitude/)󠁿 [Tianyistudio](https://profiles.wordpress.org/tianyistudio/) July 24, 2025 12 replies I’ve been using WPSSO and was initially hopeful about its features. However, the plugin constantly throws an overwhelming number of admin notices that cannot be dismissed or hidden. It clutters the WordPress dashboard and negatively affects the user experience. When I searched online for a solution, I found that many users have raised the same issue over the years — and yet, the developer has shown no willingness to improve this aspect. Instead of addressing user feedback, the author seems to dismiss criticism and responds with an attitude of “take it or leave it.” A plugin should help streamline website management, not disrupt it. Unfortunately, WPSSO feels more like a distraction than a solution. I’ve since removed it from my site and cannot recommend it to others. ![](https://secure.gravatar.com/avatar/e0ecdc08400730a3859446d6f385db2d6f2e369575f72925a3308cd3a1655e58? s=60&d=retro&r=g) ### 󠀁[Title: Do NOT Install This Plugin!](https://wordpress.org/support/topic/title-do-not-install-this-plugin/)󠁿 [novator75](https://profiles.wordpress.org/novator75/) May 19, 2025 1 reply I strongly advise against installing this plugin! Even basic settings can cause critical errors on your website. The worst part is that you might not notice the issues right away because they don’t appear on all products—only some. On top of that, the plugin significantly slows down your site. Poor performance, hidden bugs, and potential crashes make it a terrible choice. Look for a better alternative—this one isn’t worth the risk! Conclusion: Avoid at all costs! [ Read all 306 reviews ](https://wordpress.org/support/plugin/wpsso/reviews/) ## Contributors & Developers “WPSSO Core – Complete Schema Markup and Meta Tags” is open source software. The following people have contributed to this plugin. Contributors * [ JS Morisset ](https://profiles.wordpress.org/jsmoriss/) “WPSSO Core – Complete Schema Markup and Meta Tags” has been translated into 3 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/wpsso/contributors) for their contributions. [Translate “WPSSO Core – Complete Schema Markup and Meta Tags” into your language.](https://translate.wordpress.org/projects/wp-plugins/wpsso) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/wpsso/), check out the [SVN repository](https://plugins.svn.wordpress.org/wpsso/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/wpsso/) by [RSS](https://plugins.trac.wordpress.org/log/wpsso/?limit=100&mode=stop_on_copy&format=rss). ## Changelog ### Release Schedule New versions of the plugin are released approximately every week (more or less). New features are added, tested, and released incrementally, instead of grouping them together in a major version release. When minor bugs fixes and/or code improvements are applied, new versions are also released. This release schedule keeps the code stable and reliable, at the cost of more frequent updates. See [release early, release often (RERO) software development philosophy](https://en.wikipedia.org/wiki/Release_early,_release_often) on Wikipedia for more information on the benefits of smaller / more frequent releases. ### Version Numbering Version components: `{major}.{minor}.{bugfix}[-{stage}.{level}]` * {major} = Major structural code changes and/or incompatible API changes (ie. breaking changes).hanges). * {minor} = New functionality was added or improved in a backwards-compatible manner. * {bugfix} = Backwards-compatible bug fixes or small improvements. * {stage}.{level} = Pre-production release: dev < a (alpha) < b (beta) < rc (release candidate). ### Standard Edition Repositories * [GitHub](https://surniaulula.github.io/wpsso/) * [WordPress.org](https://plugins.trac.wordpress.org/browser/wpsso/) ### Development Version Updates **WPSSO Core Premium edition customers have access to development, alpha, beta, and release candidate version updates:** Under the SSO > Update Manager settings page, select the “Development and Up” (for example) version filter for the WPSSO Core plugin and/or its add-ons. When new development versions are available, they will automatically appear under your WordPress Dashboard > Updates page. You can reselect the “Stable / Production” version filter at any time to reinstall the latest stable version. **WPSSO Core Standard edition users (ie. the plugin hosted on WordPress.org) have access to [the latest development version under the Advanced Options section](https://wordpress.org/plugins/wpsso/advanced/).** ### Changelog / Release Notes **Version 21.13.0 (2026/04/11)** * **New Features** - None. * **Improvements** - None. * **Bugfixes** - None. * **Developer Notes** - Added new filters to include or exclude additional Schema image sizes (ie. not 1×1): * ‘wpsso_add_image_sizes_schema_4x3’ * ‘wpsso_add_image_sizes_schema_16x9’ * ‘wpsso_add_image_sizes_schema_thumb’ * **Requires At Least** - PHP v7.4.33. - WordPress v6.0. - WPSSO Update Manager v7.2.0 (for Premium edition). **Version 21.12.0 (2026/03/25)** * **New Features** - None. * **Improvements** - Added an additional check to ignore an invalid YouTube video ID or URL. * **Bugfixes** - None. * **Developer Notes** - None. * **Requires At Least** - PHP v7.4.33. - WordPress v6.0. - WPSSO Update Manager v7.2.0 (for Premium edition). **Version 21.11.2 (2025/12/25)** * **New Features** - None. * **Improvements** - Updated the SSO > Advanced Settings > Attributes and Metadata > Custom Fields > Product GTIN Custom Field default option value to “_global_unique_id” for compatibility with WooCommerce. * **Bugfixes** - None. * **Developer Notes** - None. * **Requires At Least** - PHP v7.4.33. - WordPress v6.0. - WPSSO Update Manager v7.2.0 (for Premium edition). **Version 21.11.1 (2025/12/23)** * **New Features** - None. * **Improvements** - None. * **Bugfixes** - Fixed getting the primary category ID for WooCommerce products from Yoast SEO. * **Developer Notes** - Added new ‘post_primary_tax_slug’ and ‘post_taxonomies’ elements to the `$ mod` array. - Added the ‘wpsso_primary_term_id’ filter to the `WpssoPost->get_default_term_id()` method. - Added support for inline variables to `WpssoIntegDataAbstractSeoMeta->filter_get_post_options()`. - Refactored the `WpssoIntegSeoWpseo->filter_primary_term_id()` method to use the `$tax_slug` value as part of the meta key. - Added a new ‘wpsso_primary_term_id_is_custom’ filter to the `WpssoPost->get_primary_term_id()` method. - Removed the ‘wpsso_default_term_id’ filter. * **Requires At Least** - PHP v7.4.33. - WordPress v5.9. - WPSSO Update Manager v7.2.0 (for Premium edition). **Version 21.11.0 (2025/12/20)** * **New Features** - None. * **Improvements** - Added the Schema StrikethroughPrice price type in price specification markup. - Removed the Schema SalePrice and ListPrice price types in price specification markup (no longer supported by Google). - Removed the “Default Product Price Type” option from the SSO > Advanced Settings page. - Updated the add-ons for filter name changes: * WPSSO Schema Breadcrumbs Markup * WPSSO Ratings and Reviews * **Bugfixes** - None. * **Developer Notes** - Added a new ‘wpsso_add_schema_unit_price_specification’ filter. - Renamed the ‘wpsso_add_custom_post_type_options’ filter to ‘wpsso_custom_post_type_options’. - Renamed the ‘wpsso_add_custom_post_type_archive_options’ filter to ‘wpsso_custom_post_type_archive_options’. - Renamed the ‘wpsso_add_custom_taxonomy_options’ filter to ‘wpsso_custom_taxonomy_options’. * **Requires At Least** - PHP v7.4.33. - WordPress v5.9. - WPSSO Update Manager v7.2.0 (for Premium edition). ## Meta * Version **21.13.0** * Last updated **4 hours ago** * Active installations **5,000+** * WordPress version ** 6.0 or higher ** * Tested up to **6.9.4** * PHP version ** 7.4.33 or higher ** * Languages * [English (US)](https://wordpress.org/plugins/wpsso/), [French (Belgium)](https://fr-be.wordpress.org/plugins/wpsso/), [French (Canada)](https://fr-ca.wordpress.org/plugins/wpsso/), and [French (France)](https://fr.wordpress.org/plugins/wpsso/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/wpsso) * Tags * [meta tags](https://scn.wordpress.org/plugins/tags/meta-tags/)[Optimize](https://scn.wordpress.org/plugins/tags/optimize/) [schema](https://scn.wordpress.org/plugins/tags/schema/)[search results](https://scn.wordpress.org/plugins/tags/search-results/) [woocommerce](https://scn.wordpress.org/plugins/tags/woocommerce/) * [Advanced View](https://scn.wordpress.org/plugins/wpsso/advanced/) ## Ratings 4.6 out of 5 stars. * [ 263 5-star reviews ](https://wordpress.org/support/plugin/wpsso/reviews/?filter=5) * [ 13 4-star reviews ](https://wordpress.org/support/plugin/wpsso/reviews/?filter=4) * [ 5 3-star reviews ](https://wordpress.org/support/plugin/wpsso/reviews/?filter=3) * [ 6 2-star reviews ](https://wordpress.org/support/plugin/wpsso/reviews/?filter=2) * [ 19 1-star reviews ](https://wordpress.org/support/plugin/wpsso/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/wpsso/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/wpsso/reviews/) ## Contributors * [ JS Morisset ](https://profiles.wordpress.org/jsmoriss/) ## Support Issues resolved in last two months: 1 out of 1 [View support forum](https://wordpress.org/support/plugin/wpsso/)