A block object represents a piece of content within Notion. The API translates the headings, toggles, paragraphs, lists, media, and more that you can interact with in the Notion UI as different block type objects.

For example, the following block object represents a Heading 2 in the Notion UI:

{
    "object": "block",
    "id": "c02fc1d3-db8b-45c5-a222-27595b15aea7",
    "parent": {
        "type": "page_id",
        "page_id": "59833787-2cf9-4fdf-8782-e53db20768a5"
    },
    "created_time": "2022-03-01T19:05:00.000Z",
    "last_edited_time": "2022-07-06T19:41:00.000Z",
    "created_by": {
        "object": "user",
        "id": "ee5f0f84-409a-440f-983a-a5315961c6e4"
    },
    "last_edited_by": {
        "object": "user",
        "id": "ee5f0f84-409a-440f-983a-a5315961c6e4"
    },
    "has_children": false,
    "archived": false,
    "type": "heading_2",
    "heading_2": {
        "rich_text": [
            {
                "type": "text",
                "text": {
                    "content": "Lacinato kale",
                    "link": null
                },
                "annotations": {
                    "bold": false,
                    "italic": false,
                    "strikethrough": false,
                    "underline": false,
                    "code": false,
                    "color": "green"
                },
                "plain_text": "Lacinato kale",
                "href": null
            }
        ],
        "color": "default",
    "is_toggleable": false
    }
}

Use the Retrieve block children endpoint to list all of the blocks on a page.

Keys

📘

Fields marked with an * are available to integrations with any capabilities. Other properties require read content capabilities in order to be returned from the Notion API. Consult the integration capabilities reference for details.

Block types that support child blocks

Some block types contain nested blocks. The following block types support child blocks:

• Bulleted list item
• Callout
• Child database
• Child page
• Column
• Heading 1, when the is_toggleable property is true
• Heading 2, when the is_toggleable property is true
• Heading 3, when the is_toggleable property is true
• Numbered list item
• Paragraph
• Quote
• Synced block
• Table
• Template
• To do
• Toggle

📘

The API does not support all block types.

Only the block type objects listed in the reference below are supported. Any unsupported block types appear in the structure, but contain a type set to "unsupported".

Block type objects

Every block object has a key corresponding to the value of type. Under the key is an object with type-specific block information.

Bookmark

Bookmark block objects contain the following information within the bookmark property:

{
  //...other keys excluded
  "type": "bookmark",
  //...other keys excluded
  "bookmark": {
    "caption": [],
    "url": "https://companywebsite.com"
  }
}

Breadcrumb

Breadcrumb block objects do not contain any information within the breadcrumb property.

{
  //...other keys excluded
  "type": "breadcrumb",
  //...other keys excluded
  "breadcrumb": {}
}

Bulleted list item

Bulleted list item block objects contain the following information within the bulleted_list_item property:

{
  //...other keys excluded
  "type": "bulleted_list_item",
  //...other keys excluded
  "bulleted_list_item": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
      // ..other keys excluded
    }],
    "color": "default",
    "children":[{
      "type": "paragraph"
      // ..other keys excluded
    }]
  }
}

Callout

Callout block objects contain the following information within the callout property:

{
  //...other keys excluded
    "type": "callout",
   // ..other keys excluded
   "callout": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
      // ..other keys excluded
    }],
     "icon": {
       "emoji": "⭐"
     },
     "color": "default"
   }
}

Child database

Child database block objects contain the following information within the child_database property:

{
  //...other keys excluded
  "type": "child_database",
  //...other keys excluded
  "child_database": {
    "title": "My database"
  }
}

📘

Creating and updating child_database blocks

To create or update child_database type blocks, use the Create a database and the Update a database endpoints, specifying the ID of the parent page in the parent body param.

Child page

Child page block objects contain the following information within the child_page property:

{
  //...other keys excluded
  "type": "child_page",
  //...other keys excluded
  "child_page": {
    "title": "Lacinato kale"
  }
}

📘

Creating and updating child_page blocks

To create or update child_page type blocks, use the Create a page and the Update page endpoints, specifying the ID of the parent page in the parent body param.

Code

Code block objects contain the following information within the code property:

{
  //...other keys excluded
  "type": "code",
  //...other keys excluded
  "code": {
    "caption": [],
        "rich_text": [{
      "type": "text",
      "text": {
        "content": "const a = 3"
      }
    }],
    "language": "javascript"
  }
}

Column list and column

Column lists are parent blocks for columns. They do not contain any information within the column_list property.

{
  //...other keys excluded
  "type": "column_list",
  //...other keys excluded
  "column_list": {}
}

Columns are parent blocks for any block types listed in this reference except for other columns. They do not contain any information within the column property. They can only be appended to column_lists.

{
  //...other keys excluded
  "type": "column",
  //...other keys excluded
  "column": {}
}

When creating a column_list block via Append block children, the column_list must have at least two columns, and each column must have at least one child.

Retrieve the content in a column list

Follow these steps to fetch the content in a column_list:

1. Get the column_list ID from a query to Retrieve block children for the parent page.

2. Get the column children from a query to Retrieve block children for the column_list.

3. Get the content in each individual column from a query to Retrieve block children for the unique column ID.

Divider

Divider block objects do not contain any information within the divider property.

{
  //...other keys excluded
  "type": "divider",
  //...other keys excluded
  "divider": {}
}

Embed

Embed block objects include information about another website displayed within the Notion UI. The embed property contains the following information:

{
  //...other keys excluded
  "type": "embed",
  //...other keys excluded
  "embed": {
    "url": "https://companywebsite.com"
  }
}

🚧

Differences in embed blocks between the Notion app and the API

The Notion app uses a 3rd-party service, iFramely, to validate and request metadata for embeds given a URL. This works well in a web app because Notion can kick off an asynchronous request for URL information, which might take seconds or longer to complete, and then update the block with the metadata in the UI after receiving a response from iFramely.

We chose not to call iFramely when creating embed blocks in the API because the API needs to be able to return faster than the UI, and because the response from iFramely could actually cause us to change the block type. This would result in a slow and potentially confusing experience as the block in the response would not match the block sent in the request.

The result is that embed blocks created via the API may not look exactly like their counterparts created in the Notion app.

Equation

Equation block objects are represented as children of paragraph blocks. They are nested within a rich text object and contain the following information within the equation property:

{
  //...other keys excluded
  "type": "equation",
  //...other keys excluded
  "equation": {
    "expression": "e=mc^2"
  }
}

File

File block objects contain the following information within the file property:

{
  //...other keys excluded
  "type": "file",
  //...other keys excluded
  "file": {
        "caption": [],
    "type": "external",
    "external": {
        "url": "https://companywebsite.com/files/doc.txt"
    }
  }
}

Headings

All heading block objects, heading_1, heading_2, and heading_3, contain the following information within their corresponding objects:

{
  //...other keys excluded
  "type": "heading_1",
  //...other keys excluded
  "heading_1": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
    }],
    "color": "default",
    "is_toggleable": false
  }
}

{
  //...other keys excluded
  "type": "heading_2",
  //...other keys excluded
  "heading_2": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
    }],
    "color": "default",
    "is_toggleable": false
  }
}

{
  //...other keys excluded
  "type": "heading_3",
  //...other keys excluded
  "heading_3": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
    }],
    "color": "default",
    "is_toggleable": false
  }
}

Image

Image block objects contain a file object detailing information about the image.

{
  //...other keys excluded
  "type": "image",
  //...other keys excluded
  "image": {
    "type": "external",
    "external": {
        "url": "https://website.domain/images/image.png"
    }
  }
}

Supported image types

The image must be directly hosted. In other words, the url cannot point to a service that retrieves the image. The following image types are supported:

• .bmp
• .gif
• .heic
• .jpeg
• .jpg
• .png
• .svg
• .tif
• .tiff

Link Preview

Link Preview block objects contain the originally pasted url:

{
  //...other keys excluded
  "type": "link_preview",
  //...other keys excluded
  "link_preview": {
    "url": "https://github.com/example/example-repo/pull/1234"
  }
}

🚧

The link_preview block can only be returned as part of a response. The API does not support creating or appending link_preview blocks.

Mention

A mention block object is a child of a rich text object that is nested within a paragraph block object. This block type represents any @ tag in the Notion UI, for a user, date, Notion page, Notion database, or a miniaturized version of a Link Preview.

A mention block object contains the following fields:

{
  //...other keys excluded
  "type": "page",
  "page": {
    "id": "3c612f56-fdd0-4a30-a4d6-bda7d7426309"
  }
}

Numbered list item

Numbered list item block objects contain the following information within the numbered_list_item property:

{
  //...other keys excluded
  "type": "numbered_list_item",
  "numbered_list_item": {
    "rich_text": [
      {
        "type": "text",
        "text": {
          "content": "Finish reading the docs",
          "link": null
        }
      }
    ],
    "color": "default"
  }
}

Paragraph

Paragraph block objects contain the following information within the paragraph property:

{
  //...other keys excluded
  "type": "paragraph",
  //...other keys excluded
  "paragraph": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Lacinato kale",
        "link": null
      }
    }],
    "color": "default"
}

{
//...other keys excluded
    "type": "paragraph",
    "paragraph":{
        "rich_text": [
            {
            "type": "mention",
            "mention": {
                "type": "date",
                "date": {
                "start": "2023-03-01",
                "end": null,
                "time_zone": null
                }
            },
            "annotations": {
                "bold": false,
                "italic": false,
                "strikethrough": false,
                "underline": false,
                "code": false,
                "color": "default"
            },
            "plain_text": "2023-03-01",
            "href": null
            },
            {
          "type": "text",
            "text": {
                "content": " ",
                "link": null
            },
            "annotations": {
                "bold": false,
                "italic": false,
                "strikethrough": false,
                "underline": false,
                "code": false,
                "color": "default"
            },
            "plain_text": " ",
            "href": null
            }
        ],
        "color": "default"
    }
}

PDF

A PDF block object represents a PDF that has been embedded within a Notion page. It contains the following fields:

{
  //...other keys excluded
    "type": "pdf",
  //...other keys excluded
  "pdf": {
    "type": "external",
    "external": {
        "url": "https://website.domain/files/doc.pdf"
    }
  }
}

Quote

Quote block objects contain the following information within the quote property:

{
    //...other keys excluded
    "type": "quote",
   //...other keys excluded
   "quote": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "To be or not to be...",
        "link": null
      },
        //...other keys excluded
    }],
    //...other keys excluded
    "color": "default"
   }
}

Synced block

Similar to the Notion UI, there are two versions of a synced_block object: the original block that was created first and doesn't yet sync with anything else, and the duplicate block or blocks synced to the original.

📘

An original synced block must be created before corresponding duplicate block or blocks can be made.

Original synced block

Original synced block objects contain the following information within the synced_block property:

{
    //...other keys excluded
    "type": "synced_block",
    "synced_block": {
        "synced_from": null,
        "children": [
            {
                "callout": {
                    "rich_text": [
                        {
                            "type": "text",
                            "text": {
                                "content": "Callout in synced block"
                            }
                        }
                    ]
                }
            }
        ]
    }
}

Duplicate synced block

Duplicate synced block objects contain the following information within the synced_from object:

{
    //...other keys excluded
    "type": "synced_block",
    "synced_block": {
        "synced_from": {
            "block_id": "original_synced_block_id"
        }
    }
}

🚧

The API does not supported updating synced block content.

Table

Table block objects are parent blocks for table row children. Table block objects contain the following fields within the table property:

{
  //...other keys excluded
  "type": "table",
  "table": {
    "table_width": 2,
    "has_column_header": false,
    "has_row_header": false
  }
}

🚧

table_width can only be set when the table is first created.

Note that the number of columns in a table can only be set when the table is first created. Calls to the Update block endpoint to update table_width fail.

Table rows

Follow these steps to fetch the table_rows of a table:

1. Get the table ID from a query to Retrieve block children for the parent page.

2. Get the table_rows from a query to Retrieve block children for the table.

A table_row block object contains the following fields within the table_row property:

{
  //...other keys excluded
  "type": "table_row",
  "table_row": {
    "cells": [
      [
        {
          "type": "text",
          "text": {
            "content": "column 1 content",
            "link": null
          },
          "annotations": {
            "bold": false,
            "italic": false,
            "strikethrough": false,
            "underline": false,
            "code": false,
            "color": "default"
          },
          "plain_text": "column 1 content",
          "href": null
        }
      ],
      [
        {
          "type": "text",
          "text": {
            "content": "column 2 content",
            "link": null
          },
          "annotations": {
            "bold": false,
            "italic": false,
            "strikethrough": false,
            "underline": false,
            "code": false,
            "color": "default"
          },
          "plain_text": "column 2 content",
          "href": null
        }
      ],
      [
        {
          "type": "text",
          "text": {
            "content": "column 3 content",
            "link": null
          },
          "annotations": {
            "bold": false,
            "italic": false,
            "strikethrough": false,
            "underline": false,
            "code": false,
            "color": "default"
          },
          "plain_text": "column 3 content",
          "href": null
        }
      ]
    ]
  }
}

📘

When creating a table block via the Append block children endpoint, the table must have at least one table_row whose cells array has the same length as the table_width.

Table of contents

Table of contents block objects contain the following information within the table_of_contents property:

{
  //...other keys excluded
    "type": "table_of_contents",
  "table_of_contents": {
    "color": "default"
  }
}

Template

❗️

Deprecation Notice

As of March 27, 2023 creation of template blocks will no longer be supported.

Template blocks represent template buttons in the Notion UI.

Template block objects contain the following information within the template property:

{
  //...other keys excluded
  "template": {
    "rich_text": [
      {
        "type": "text",
        "text": {
          "content": "Add a new to-do",
          "link": null
        },
        "annotations": {
          //...other keys excluded
        },
        "plain_text": "Add a new to-do",
        "href": null
      }
    ]
  }
}

To do

To do block objects contain the following information within the to_do property:

{
  //...other keys excluded
  "type": "to_do",
  "to_do": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Finish Q3 goals",
        "link": null
      }
    }],
    "checked": false,
    "color": "default",
    "children":[{
      "type": "paragraph"
      // ..other keys excluded
    }]
  }
}

Toggle blocks

Toggle block objects contain the following information within the toggle property:

{
  //...other keys excluded
  "type": "toggle",
  "toggle": {
    "rich_text": [{
      "type": "text",
      "text": {
        "content": "Additional project details",
        "link": null
      }
      //...other keys excluded
    }],
    "color": "default",
    "children":[{
      "type": "paragraph"
      // ..other keys excluded
    }]
  }
}

Video

Video block objects contain a file object detailing information about the image.

{
  "type": "video",
  //...other keys excluded
  "video": {
    "type": "external",
    "external": {
        "url": "https://companywebsite.com/files/video.mp4"
    }
  }
}

Supported video types

• .amv
• .asf
• .avi
• .f4v
• .flv
• .gifv
• .mkv
• .mov
• .mpg
• .mpeg
• .mpv
• .mp4
• .m4v
• .qt
• .wmv