Document loaders - Docs by LangChain

Document loaders provide a standard interface for reading data from different sources (such as Slack, Notion, or Google Drive) into LangChain’s Document format. This ensures that data can be handled consistently regardless of the source. All document loaders implement the BaseLoader interface.

Interface

Each document loader may define its own parameters, but they share a common API:

load(): Loads all documents at once.
loadAndSplit(): Loads all documents at once and splits them into smaller documents.

import { CSVLoader } from "@langchain/community/document_loaders/fs/csv";

const loader = new CSVLoader(
  ...  // <-- Integration specific parameters here
);
const data = await loader.load();

By category

LangChain.js categorizes document loaders in two different ways:

File loaders, which load data into LangChain formats from your local filesystem.
Web loaders, which load data from remote sources.

File loaders

If you’d like to contribute an integration, see Contributing integrations.

PDFs

Document Loader	Description	Package/API
PDFLoader	Load and parse PDF files using pdf-parse	Package

Common file types

Document Loader	Description	Package/API
CSV	Load data from CSV files with configurable column extraction	Package
JSON	Load JSON files using JSON pointer to target specific keys	Package
JSONLines	Load data from JSONLines/JSONL files	Package
Text	Load plain text files	Package
DOCX	Load Microsoft Word documents (.docx and .doc formats)	Package
EPUB	Load EPUB files with optional chapter splitting	Package
PPTX	Load PowerPoint presentations	Package
Subtitles	Load subtitle files (.srt format)	Package

Specialized file loaders

Document Loader	Description	Package/API
`DirectoryLoader`	Load all files from a directory with custom loader mappings	Package
`UnstructuredLoader`	Load multiple file types using Unstructured API	API
`MultiFileLoader`	Load data from multiple individual file paths	Package
`ChatGPT`	Load ChatGPT conversation exports	Package
Notion Markdown	Load Notion pages exported as Markdown	Package
OpenAI Whisper Audio	Transcribe audio files using OpenAI Whisper API	API

Web loaders

Webpages

Document Loader	Description	Web Support	Package/API
`Cheerio`	Load webpages using Cheerio (lightweight, no JavaScript execution)	✅	Package
`Playwright`	Load dynamic webpages using Playwright (supports JavaScript rendering)	❌	Package
`Puppeteer`	Load dynamic webpages using Puppeteer (headless Chrome)	❌	Package
`FireCrawl`	Crawl and convert websites into LLM-ready markdown	✅	API
`Spider`	Fast crawler that converts websites into HTML, markdown, or text	✅	API
`RecursiveUrlLoader`	Recursively load webpages following links	❌	Package
`Sitemap`	Load all pages from a sitemap.xml	✅	Package
`Browserbase`	Load webpages using managed headless browsers with stealth mode	✅	API
`WebPDFLoader`	Load PDF files in web environments	✅	Package

Cloud Providers

Document Loader	Description	Web Support	Package/API
S3	Load files from AWS S3 buckets	❌	Package
Azure Blob Storage Container	Load all files from Azure Blob Storage container	❌	Package
Azure Blob Storage File	Load individual files from Azure Blob Storage	❌	Package
Google Cloud Storage	Load files from Google Cloud Storage buckets	❌	Package
Google Cloud SQL for PostgreSQL	Load documents from Cloud SQL PostgreSQL databases	✅	Package

Productivity Tools

Document Loader	Description	Web Support	Package/API
Notion API	Load Notion pages and databases via API	✅	API
Figma	Load Figma file data	✅	API
Confluence	Load pages from Confluence spaces	❌	API
GitHub	Load files from GitHub repositories	✅	API
GitBook	Load GitBook documentation pages	✅	Package
Jira	Load issues from Jira projects	❌	API
Airtable	Load records from Airtable bases	✅	API
Taskade	Load Taskade project data	✅	API

Search & Data APIs

Document Loader	Description	Web Support	Package/API
SearchAPI	Load web search results from SearchAPI (Google, YouTube, etc.)	✅	API
SerpAPI	Load web search results from SerpAPI	✅	API
Apify Dataset	Load scraped data from Apify platform	✅	API

Audio & Video

Document Loader	Description	Web Support	Package/API
YouTube	Load YouTube video transcripts	✅	Package
AssemblyAI	Transcribe audio and video files using AssemblyAI API	✅	API
Sonix	Transcribe audio files using Sonix API	❌	API

Other

Document Loader	Description	Web Support	Package/API
Couchbase	Load documents from Couchbase database using SQL++ queries	✅	Package
LangSmith	Load datasets and traces from LangSmith	✅	API
Hacker News	Load Hacker News threads and comments	✅	Package
IMSDB	Load movie scripts from Internet Movie Script Database	✅	Package
College Confidential	Load college information from College Confidential	✅	Package
Blockchain Data	Load blockchain data (NFTs, transactions) via Sort.xyz API	✅	API

All document loaders

Airtable

Apify Dataset

AssemblyAI Audio Transcript

Azure Blob Storage Container

Azure Blob Storage File

Blockchain Data

Browserbase

ChatGPT

Cheerio

College Confidential

Confluence

Couchbase

CSV

DirectoryLoader

DOCX

EPUB

Figma

FireCrawl

GitHub

GitBook

Google Cloud SQL for PostgreSQL

Google Cloud Storage

Hacker News

IMSDB

Jira

JSON

JSONLines

LangSmith

MultiFileLoader

Notion API

Notion Markdown

OpenAI Whisper Audio

PDFLoader

Playwright

PPTX

Puppeteer

RecursiveUrlLoader

S3

SearchAPI

SerpAPI

Sitemap

Sonix Audio

Spider

Subtitles

Taskade

Text

UnstructuredLoader

WebPDFLoader

YouTube

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​Interface

​By category

​File loaders

​PDFs

​Common file types

​Specialized file loaders

​Web loaders

​Webpages

​Cloud Providers

​Productivity Tools

​Search & Data APIs

​Audio & Video

​Other

​All document loaders

Airtable

Apify Dataset

AssemblyAI Audio Transcript

Azure Blob Storage Container

Azure Blob Storage File

Blockchain Data

Browserbase

ChatGPT

Cheerio

College Confidential

Confluence

Couchbase

CSV

DirectoryLoader

DOCX

EPUB

Figma

FireCrawl

GitHub

GitBook

Google Cloud SQL for PostgreSQL

Google Cloud Storage

Hacker News

IMSDB

Jira

JSON

JSONLines

LangSmith

MultiFileLoader

Notion API

Notion Markdown

OpenAI Whisper Audio

PDFLoader

Playwright

PPTX

Puppeteer

RecursiveUrlLoader

S3

SearchAPI

SerpAPI

Sitemap

Sonix Audio

Spider

Subtitles

Taskade

Text

UnstructuredLoader

WebPDFLoader

YouTube

Interface

By category

File loaders

PDFs

Common file types

Specialized file loaders

Web loaders

Webpages

Cloud Providers

Productivity Tools

Search & Data APIs

Audio & Video

Other

All document loaders