meta-tags | Supports Open Graph | Meta Tags library

As described in docs, you can create server side variables that can be injected in your front end code.

Here is what you need to do:

1. Create a JS script, say myConfig.js, and place it on the server at a public location so that frontend can load it.
2. Define config data in this file, e.g:

Though React-17 has been recently released. There may occur some errors with some packages. Try downgrading to the previous stable version of React.

Go to your package.json replace "react-dom": "^17.0.1", and "react": "^17.0.1", with "react-dom": "^16.13.1", and "react": "^16.13.1".

Then do a npm install in the terminal to get it started.

The specification for X-Robots-Tag is here. This is what it says about the date format for unavailable_after:

The date/time must be specified in a widely adopted format including, but not limited to RFC 822, RFC 850, and ISO 8601.

So, unfortunately, the format is not specified precisely, and you really will need to be able to parse multiple, potentially unknown, formats to write a crawler that works with all conformant tags.

I found the cause.
I had a meta-tag that should shorten the snippet text

You can use Azure Search for this task as well, store images in Azure Storage (BLOB) and use Azure Search for crawling. indexing and searching. Using metadata you can enhance your search as well. This way you might not even need to use Folders to separate different categories.

It is because the website is a single-page app. Before the JavaScript is loaded, everything rendered by React is not there yet(including those meta tags). You can verify it by right-clicking the page and select "view source", you will see that inside body, there is only a

TL;DR Host your app on Netlify if you can. They offer prerendering service.

First, you may look at prerendering which is a service to render your javascript in a browser, save the static HTML, and return that when the service detects that the request is coming from a crawler. If you can host your React on Netlify, you can use their free prerendering service(which caches prerendered pages for between 24 and 48 hours). Or you can check out prerender.io. This is the solution if you don't want to move to another framework and just want to get the SEO stuffs working.

Another more common way to deal with this problem is do static site generation(SSG) or server side rendering(SSR). These mean that HTML content is statically generated using React DOM server-side APIs. When the static HTML content reaches client side, it will call the hydrate() method to turn it back into a functioning React app. Two most popular frameworks are Gatsby.js and Next.js. With these frameworks, you will be writing React and JSX code like you already do. But they offer more to power your app, including SSG, SSR, API routes, plugins, etc. I'd recommend you to check out their "Get started" tutorials. Transferring from a create-react-app to one of these frameworks can take less than a day, depending of the size of your project.

• Next.js Tutorials
• Gatsby.js Tutorials

After implementing one of these solutions, visit Facebook Sharing Debugger to ask Facebook to scape your page again.

You can use blocks. In your meta-tags-social-share.html add this:

So apparently ActionText instances have a method for retrieving plain text values with to_plain_text. All together it looks like this:

Got it working by updating gemfile.lock

Changed sqlite3 (1.4.0) to sqlite3 (1.3.13).

Update: Don't forget to specify your gem version in gemfile. Example: gem 'sqlite3', '~> 1.3.13', otherwise bundle update command will return an error.