const editor = EditorJS({
  ...

  tools: {
    ...
    linkTool: {
      class: LinkTool,
      config: {
        endpoint: 'http://localhost:8008/fetchUrl', // Your backend endpoint for url data fetching,
      }
    }
  },

  ...
});

Config Params

Link Tool supports these configuration parameters:

Field	Type	Description
endpoint	`string`	Required: the endpoint for link data fetching.
headers	`object`	Optional: the headers used in the GET request.

Output data

This Tool returns data with following format

Field	Type	Description
link	`string`	Pasted link's url
meta	`object`	Fetched link's data. Any data got from the backend. Currently, the plugin's design supports the 'title', 'image', and 'description' fields.

{
    "type" : "linkTool",
    "data" : {
        "link" : "https://codex.so",
        "meta" : {
            "title" : "CodeX Team",
            "site_name" : "CodeX",
            "description" : "Club of web-development, design and marketing. We build team learning how to build full-valued projects on the world market.",
            "image" : {
                "url" : "https://codex.so/public/app/img/meta_img.png"
            }
        }
    }
}

Backend response format

You can implement a backend for link data fetching your own way. It is a specific and trivial task depending on your environment and stack.

Backend response should cover following format:

{
    "success" : 1,
    "link": "https://codex.so", // Optionally return a link to set the hyperlink URL
    "meta": {
        // ... any fields you want
    }
}

success — uploading status. 1 for successful, 0 for failed

link - Optional response parameter to override the URL provided

meta — link fetched data.

Currently, the plugin's design supports the 'title', 'image', and 'description' fields. They should have the following format in the response:

{
    "success" : 1,
    "meta": {
        "title" : "CodeX Team",
        "description" : "Club of web-development, design and marketing. We build team learning how to build full-valued projects on the world market.",
        "image" : {
            "url" : "https://codex.so/public/app/img/meta_img.png"
        }
    }
}

Also, it can contain any additional fields you want to store.

About CodeX

CodeX is a team of digital specialists around the world interested in building high-quality open source products on a global market. We are open for young people who want to constantly improve their skills and grow professionally with experiments in cutting-edge technologies.