@readletjs/core

The framework-free core of Readlet: document model, a virtualised viewport (scroll and page modes, zoom, rotation), a selectable text layer, and selections as stable, serialisable TextRanges. No runtime dependencies. Use it with a format backend such as @readletjs/pdf.

npm install @readletjs/core @readletjs/pdf

import { createSelectionManager, createViewport, loadDocument } from "@readletjs/core";
import { createPdfBackend } from "@readletjs/pdf";

const doc = await loadDocument("/paper.pdf", { backend: createPdfBackend() });
const viewport = createViewport(doc, { container, zoom: "fit-width" });
const selection = createSelectionManager(viewport);
selection.on("change", (range) => console.log(range && selection.rangeToText(range)));

Documentation, examples and the other packages: https://github.com/jaklimoff/readlet

MIT licence. See NOTICE for the licence of pdf.js.