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Linearization

PDF Linearization

A PDF optimization technique that enables fast web viewing by reorganizing the file for incremental loading.

Technical Detail

Linearization reorganizes a PDF's internal structure so that the first page and its resources appear at the beginning of the file. This enables web browsers to display the first page while the remainder downloads in the background, similar to progressive JPEG loading. The linearized file includes a hint table mapping each page to its byte range, allowing direct seeks to any page without parsing the entire document.

Example

```javascript
// Linearization: PDF manipulation example
import { PDFDocument } from 'pdf-lib';

const pdfDoc = await PDFDocument.load(fileBytes);
const pages = pdfDoc.getPages();
console.log(`Pages: ${pages.length}`);
```

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