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JavaScriptTested
Community-driven, web-standards-based PDF engine maintained by Mozilla and built into Firefox as its native PDF viewer. Renders pages to canvas for in-browser viewing and exposes a document API (incl. `getTextContent()`) for reading page content programmatically. Ships as both an embeddable viewer UI and the underlying `pdfjs-dist` library, usable standalone in Node for headless processing without a browser.