Integration issue Rank Math’s JSON-LD structured data output

#1114816
  • Ume Habiba

    4 days, 1 hour ago

    Rank Math free

    Hello Support Team,

    I’m encountering a complex integration issue between **Rank Math’s JSON-LD structured data output** and my website’s **React-based dynamic rendering system** on **codicefiscalcalcolo.it**, which calculates and validates Italian tax codes (codice fiscale) in real time.

    Here’s the scenario:

    * My site uses a **React front-end** that renders server-side via PHP and then rehydrates on the client side to display user-specific results (e.g., calculated codice fiscale, birth date, and province).
    * Rank Math generates schema markup and meta tags on the server before hydration. However, when React re-renders the DOM, Rank Math’s JSON-LD markup either:

    1. Gets **overwritten or removed** due to virtual DOM diffing, or
    2. Remains static, not updating with the new user-calculated data displayed on the page.
    * As a result, **Google’s structured data testing tools** show inconsistencies between visible content and the embedded schema — particularly in Person, WebPage, and SoftwareApplication types used on result pages.
    * Attempting to inject updated JSON-LD through React components causes **duplicate @graph entries** or validation errors like “Ambiguous node definition” and “Unexpected type for field mainEntity.”

    Could you please advise how to properly synchronize Rank Math’s schema generation with React’s client-side updates? Specifically:

    * Is there a supported method to dynamically regenerate or modify Rank Math’s JSON-LD after hydration without breaking validation?
    * Can Rank Math schema be hooked into a post-render lifecycle (via rank_math/json_ld or an AJAX callback) to rebuild data based on updated React state?
    * Would disabling automatic schema and manually outputting Rank Math schema objects be a viable solution for hybrid-rendered pages?

    This issue appears to affect modern JavaScript-driven sites where Rank Math’s static schema output conflicts with client-side frameworks. A workaround or advanced integration example would be extremely helpful.

    Thank you for your time and support — Rank Math is an outstanding tool, and solving this would make it even more compatible with modern dynamic websites.

    **Website:** [https://codicefiscalcalcolo.it/]

Viewing 2 replies - 1 through 2 (of 2 total)
  • RankBot

    1 week ago

    Hello,

    We apologize for the issue you are facing with the integration of Rank Math’s JSON-LD structured data output and your React-based dynamic rendering system. Thank you for providing detailed information about your setup and the challenges you’re encountering.

    To address your concerns:

    1. Dynamically Regenerating or Modifying JSON-LD: Unfortunately, there isn’t a built-in method in Rank Math to dynamically regenerate or modify JSON-LD after hydration without potentially breaking validation. However, you can use the rank_math/json_ld filter to modify the JSON-LD output before it is sent to the front end. This allows you to hook into the lifecycle of your application and adjust the schema based on the current state of your React components.

    2. Post-Render Lifecycle Hook: While Rank Math does not provide a direct AJAX callback for rebuilding data based on updated React state, you can implement a custom solution using the rank_math/json_ld filter. This would involve checking the state of your React application and modifying the JSON-LD output accordingly before it is rendered.

    3. Manual Output of Schema Objects: Disabling automatic schema generation and manually outputting Rank Math schema objects could be a viable solution. This approach would give you full control over the JSON-LD output, allowing you to ensure that it matches the dynamic content displayed by your React application. You can create a custom function that generates the appropriate JSON-LD based on the current state of your application and outputs it directly in your React components.

    For more detailed guidance on using the rank_math/json_ld filter, you can refer to our documentation on extending JSON-LD data.

    If you have further questions or need additional assistance, please feel free to reply to this ticket, and a human agent from our support team will assist you further.

    Thank you for raising this concern, and we hope to help you resolve it soon!

    Sources:
    How to Make Your Theme Rank Math Compatible » Rank Math

    This is an automated reply from Rank Math Support Bot. Your ticket has been assigned to a human agent and we will get back to you shortly.

    Jeremy

    4 days, 1 hour ago

    Hello,

    Thank you for your query and we are so sorry about the trouble this must have caused.

    At the moment, Rank Math’s schema and meta output are generated on the server side and are not designed to dynamically update after client-side rendering or React. Since React re-renders the DOM, it can indeed override or desynchronize the JSON-LD output.

    For headless or hybrid setups, we recommend enabling Headless CMS Support (Rank Math → General Settings → Others) and fetching the schema and meta data via the REST API endpoint:

    
/wp-json/rankmath/v1/getHead?url=<full_page_url>

    Here’s a guide you can follow: https://rankmath.com/kb/headless-cms-support/

    You can then inject or update the JSON-LD dynamically from your React app as needed.

    Hope that helps.

Viewing 2 replies - 1 through 2 (of 2 total)

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