This article details a lightweight pure‑HTML5 solution for synchronizing PDF documents across participants using PDF.js for rendering and a FastAPI‑based WebSocket layer for real‑time state broadcasting, covering architecture, workflow, code snippets, and synchronization logic.
This guide walks through setting up a Spring Boot project, adding PDF.js static assets, creating a preview page, implementing a backend controller to serve PDF files, configuring MIME types, and testing the integrated PDF viewer for proper functionality.
This article describes how to achieve fast online PDF preview by splitting PDF files into chunks, using PDF.js to load and render only visible pages on demand, and optimizing memory by clearing off‑screen content while supporting rotation, zoom, and page navigation.
This article explains the evolution and usage of Uint8Array, TypedArray, Buffer, and Blob in JavaScript, demonstrates how to convert between strings, ArrayBuffers, and binary data, and shows practical code examples for rendering PDFs and handling files in both browser and Node environments.
