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notion-html-parser
(Notion to Markdown)

notion-html-parser is a Node.js package that allows you to convert Notion pages to Markdown format.

Convert notion pages, blocks and list of blocks to markdown (supports nesting) using notion-sdk-js

notion-to-md - Programmatically convert notion pages to markdown | Product Hunt

## Install ```Bash npm install notion-html-parser ``` ## Usage > ⚠️ **Note:** Before getting started, create [an integration and find the token](https://www.notion.so/my-integrations). > Details on methods can be found in [API section](https://github.com/surendrakandel/notion-html-parser#api) > ⚠️ **Note:** Starting from v2.7.0, `toMarkdownString` no longer automatically saves child pages. > Now it provides an object containing the markdown content of child pages. ## converting markdown objects to markdown string This is how the notion page looks for this example: ```javascript const { Client } = require("@notionhq/client"); const { NotionToMarkdown } = require("notion-html-parser"); const fs = require('fs'); // or // import {NotionToMarkdown} from "notion-html-parser"; const notion = new Client({ auth: "your integration token", }); // passing notion client to the option const n2m = new NotionToMarkdown({ notionClient: notion }); (async () => { const mdblocks = await n2m.pageToMarkdown("target_page_id"); const mdString = n2m.toMarkdownString(mdblocks); console.log(mdString.parent); })(); ``` ## Separate child page content **parent page content:** **child page content:** `NotionToMarkdown` takes second argument, `config` ```javascript const { Client } = require("@notionhq/client"); const { NotionToMarkdown } = require("notion-html-parser"); const fs = require('fs'); // or // import {NotionToMarkdown} from "notion-html-parser"; const notion = new Client({ auth: "your integration token", }); // passing notion client to the option const n2m = new NotionToMarkdown({ notionClient: notion, config:{ separateChildPage:true, // default: false } }); (async () => { const mdblocks = await n2m.pageToMarkdown("target_page_id"); const mdString = n2m.toMarkdownString(mdblocks); console.log(mdString); })(); ``` **Output:** `toMarkdownString` returns an object with target page content corresponding to `parent` property and if any child page exists then it's included in the same object. User gets to save the content separately. ## Disable child page parsing ```javascript ... const n2m = new NotionToMarkdown({ notionClient: notion, config:{ parseChildPages:false, // default: parseChildPages } }); ... ``` ## converting page to markdown object **Example notion page:** ```js const { Client } = require("@notionhq/client"); const { NotionToMarkdown } = require("notion-html-parser"); const notion = new Client({ auth: "your integration token", }); // passing notion client to the option const n2m = new NotionToMarkdown({ notionClient: notion }); (async () => { // notice second argument, totalPage. const x = await n2m.pageToMarkdown("target_page_id", 2); console.log(x); })(); ``` **Output:** ```json [ { "parent": "# heading 1", "children": [] }, { "parent": "- bullet 1", "children": [ { "parent": "- bullet 1.1", "children": [] }, { "parent": "- bullet 1.2", "children": [] } ] }, { "parent": "- bullet 2", "children": [] }, { "parent": "- [ ] check box 1", "children": [ { "parent": "- [x] check box 1.2", "children": [] }, { "parent": "- [ ] check box 1.3", "children": [] } ] }, { "parent": "- [ ] checkbox 2", "children": [] } ] ``` ## converting list of blocks to markdown object ```js const { Client } = require("@notionhq/client"); const { NotionToMarkdown } = require("notion-html-parser"); const notion = new Client({ auth: "your integration token", }); // passing notion client to the option const n2m = new NotionToMarkdown({ notionClient: notion }); (async () => { // get all blocks in the page const { results } = await notion.blocks.children.list({ block_id, }); //convert to markdown const x = await n2m.blocksToMarkdown(results); console.log(x); })(); ``` **Output**: same as before ## Converting a single block to markdown string - only takes a single notion block and returns corresponding markdown string - nesting is ignored - depends on @notionhq/client ```js const { NotionToMarkdown } = require("notion-html-parser"); // passing notion client to the option const n2m = new NotionToMarkdown({ notionClient: notion }); const result = n2m.blockToMarkdown(block); console.log(result); ``` **result**: ``` ![image](https://media.giphy.com/media/Ju7l5y9osyymQ/giphy.gif) ``` ## Custom Transformers You can define your own custom transformer for a notion type, to parse and return your own string. `setCustomTransformer(type, func)` will overload the parsing for the giving type. ```ts const { NotionToMarkdown } = require("notion-html-parser"); const n2m = new NotionToMarkdown({ notionClient: notion }); n2m.setCustomTransformer("embed", async (block) => { const { embed } = block as any; if (!embed?.url) return ""; return `
${await n2m.blockToMarkdown(embed?.caption)}
`; }); const result = n2m.blockToMarkdown(block); // Result will now parse the `embed` type with your custom function. ``` **Note** Be aware that `setCustomTransformer` will take only the last function for the given type. You can't set two different transforms for the same type. You can also use the default parsing by returning `false` in your custom transformer. ```ts // ... n2m.setCustomTransformer("embed", async (block) => { const { embed } = block as any; if (embed?.url?.includes("myspecialurl.com")) { return `...`; // some special rendering } return false; // use default behavior }); const result = n2m.blockToMarkdown(block); // Result will now only use custom parser if the embed url matches a specific url ``` ## Contribution Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change. Please make sure to update tests as appropriate. ## Contributers ## License [MIT](https://choosealicense.com/licenses/mit/)