By default, one document will be created for each page in the PDF file. You can change this behavior by setting the `splitPages` option to `false`.

## Setup

```bash npm2yarn
npm install pdf-parse
```

## Usage, one document per page

```typescript
import { PDFLoader } from "langchain/document_loaders/fs/pdf";

const loader = new PDFLoader("src/document_loaders/example_data/example.pdf");

const docs = await loader.load();
```

## Usage, one document per file

```typescript
import { PDFLoader } from "langchain/document_loaders/fs/pdf";

const loader = new PDFLoader("src/document_loaders/example_data/example.pdf", {
  splitPages: false,
});

const docs = await loader.load();
```

## Usage, custom `pdfjs` build

By default we use the `pdfjs` build bundled with `pdf-parse`, which is compatible with most environments, including Node.js and modern browsers. If you want to use a more recent version of `pdfjs-dist` or if you want to use a custom build of `pdfjs-dist`, you can do so by providing a custom `pdfjs` function that returns a promise that resolves to the `PDFJS` object.

In the following example we use the "legacy" (see [pdfjs docs](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#which-browsersenvironments-are-supported)) build of `pdfjs-dist`, which includes several polyfills not included in the default build.

```bash npm2yarn
npm install pdfjs-dist
```

```typescript
import { PDFLoader } from "langchain/document_loaders/fs/pdf";

const loader = new PDFLoader("src/document_loaders/example_data/example.pdf", {
  // you may need to add `.then(m => m.default)` to the end of the import
  pdfjs: () => import("pdfjs-dist/legacy/build/pdf.js"),
});
```