[Enhanced] Review Bar Plugin with Schema Review Output

Hello,

you may have come here from our other post, which now redirects to this one. With this plugin, we had the goal, to create a simple, yet powerful plugin to showcase Reviews. Free, reliable, and safely.

We were deeply annoyed by all the Freemium-Versions of Review Plugins for WordPress, and especially their old coding, when we basically just needed a small, simple Plugin structure. So we made it ourself with the Help of Perplexity Pro and Anthropic’s Claude Sonnet 4.0.

You can download Version 2.8 Enhanced (June 10th 2025) here for free.

Bugfix 2.4 > 2.5

• Fixed an Error where Google would show “incorrect value in value.aggregateRating”.

Bugfixes 2.6, 2.7 > 2.8

• Fixed multiple math translation issues. Sets value in % now also as Value in Schema Output (instead of translating to x/5 since this can cause these issues again.)

To use this plugin, just download and install on your WordPress Installation. What this Plugin does:

1. Adds four meta boxes in the Post Editing Screen
2. Fills the data into a shortcode, that appends the review to the end of the post
3. Uses an intelligent filter to detect the SKUs structur (ISBN, ISBN-13, etc.)
4. The Review Bar is colored, based on your rating. From 0 to 30 red, 31 to 50 orange, 51 to 75 yellow, 76 to 100 green.
5. Create a Rich Snippet Schema
6. Uses the featured image as the display image
7. Uses the post excerpt as the description
8. Adds additional user information for Google

This is new:

• Settings Page in Settings > Review Bar
• Set Color for the Line
• Adds better Schema Output
• Allows overwriting existing entries

To use on posts:

Fill the following fields on your Post Edit Screen:

Value: Rating in % (0-100)
Price: in Euro, accepts , and .
Brand: Add the Name of the Brand
SKU/EAN/IBAN: Enter the barcode

You will need to change the code according to your needs, f.ex. the Link, the Link Text below the review bar, the colors, the Author etc. Also, to your currency, as it currently uses Euro exclusively.

Filling out these fields, automatically appends the following Schema Output (see example post). See in the Google Validator. NOTE: This contains additionally content added by RankMath.

<script type="application/ld+json" class="rank-math-schema-pro">{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://www.gooloo.de/#organization","name":"gooloo.de Redaktion","sameAs":["https://www.facebook.com/gooloode","https://www.pinterest.com/gooloo","https://www.t.me/goolooDE","https://www.paypal.me/goolooDE","https://www.buymeacoffee.com/goolooDE","https://www.amazon.de/shop/goolooDE","https://www.instagram.com/gooloode","https://news.google.com/publications/CAAqBwgKMPPCqwsw8M3DAw"],"logo":{"@type":"ImageObject","@id":"https://www.gooloo.de/#logo","url":"https://www.gooloo.de/wp-content/uploads/2023/02/head_new_gooloo.webp","contentUrl":"https://www.gooloo.de/wp-content/uploads/2023/02/head_new_gooloo.webp","caption":"gooloo.de \u2022 your beauty ambassador","inLanguage":"de-DE","width":"1200","height":"630"}},{"@type":"WebSite","@id":"https://www.gooloo.de/#website","url":"https://www.gooloo.de","name":"gooloo.de \u2022 your beauty ambassador","alternateName":"gooloo.de","publisher":{"@id":"https://www.gooloo.de/#organization"},"inLanguage":"de-DE"},{"@type":"ImageObject","@id":"https://www.gooloo.de/wp-content/uploads/2024/05/actionhairboosters.webp","url":"https://www.gooloo.de/wp-content/uploads/2024/05/actionhairboosters.webp","width":"1200","height":"630","inLanguage":"de-DE"},{"@type":"BreadcrumbList","@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https://www.gooloo.de","name":"gooloo.de"}},{"@type":"ListItem","position":"2","item":{"@id":"https://www.gooloo.de/category/blondes-haar","name":"Blondes Haar"}},{"@type":"ListItem","position":"3","item":{"@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html","name":"ACTION Hair Boosters Banana, Pomegranate, Mango"}}]},{"@type":"WebPage","@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#webpage","url":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html","name":"ACTION Hair Boosters Banana, Pomegranate, Mango &bull; gooloo.de","datePublished":"2024-09-20T12:00:21+02:00","dateModified":"2024-09-20T12:00:21+02:00","isPartOf":{"@id":"https://www.gooloo.de/#website"},"primaryImageOfPage":{"@id":"https://www.gooloo.de/wp-content/uploads/2024/05/actionhairboosters.webp"},"inLanguage":"de-DE","breadcrumb":{"@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#breadcrumb"}},{"@type":"Person","@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#author","name":"Eileen Pahl","description":"1","image":{"@type":"ImageObject","@id":"https://secure.gravatar.com/avatar/72b7f587d33135a98be2f2524e63ee4a?s=96&amp;d=mm&amp;r=g","url":"https://secure.gravatar.com/avatar/72b7f587d33135a98be2f2524e63ee4a?s=96&amp;d=mm&amp;r=g","caption":"Eileen Pahl","inLanguage":"de-DE"},"sameAs":["https://www.gooloo.de","https://www.facebook.com/gooloode","https://twitter.com/gooloode"],"worksFor":{"@id":"https://www.gooloo.de/#organization"}},{"@type":"NewsArticle","headline":"ACTION Hair Boosters Banana, Pomegranate, Mango &bull; gooloo.de &bull; gooloo.de","keywords":"action,hair boosters","datePublished":"2024-09-20T12:00:21+02:00","dateModified":"2024-09-20T12:00:21+02:00","articleSection":"ACTION, Blondes Haar, Gef\u00e4rbtes Haar, Gesch\u00e4digtes Haar, Glanzloses Haar, Haarkur, Haar\u00f6l, Haarpflege, Trockenes Haar","author":{"@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#author","name":"Eileen Pahl"},"publisher":{"@id":"https://www.gooloo.de/#organization"},"description":"Feuchtigkeitsspendende, silikonbasierte Haarpflege-Seren zum Verbleib im Haar in den Varianten Banane, Granatapfel und Mango.","copyrightYear":"2024","copyrightHolder":{"@id":"https://www.gooloo.de/#organization"},"name":"ACTION Hair Boosters Banana, Pomegranate, Mango &bull; gooloo.de &bull; gooloo.de","@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#richSnippet","isPartOf":{"@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#webpage"},"image":{"@id":"https://www.gooloo.de/wp-content/uploads/2024/05/actionhairboosters.webp"},"inLanguage":"de-DE","mainEntityOfPage":{"@id":"https://www.gooloo.de/2024/09/action-hair-boosters-banana-pomegranate-mango.html#webpage"}}]}</script>