Read PDFs with LLMs — @mention threads on passages, or generate interactive chapter summaries

Agentic, build-validated C# examples for Aspose.PDF for .NET covering PDF creation, conversion, editing, annotations, forms, digital signatures, and text extraction.

Cross‑platform PDF tooling built on the open‑source PDFium engine

This repository demonstrates how to add or remove stamp annotations in PDF documents using C# and the Syncfusion .NET PDF Library. Learn to apply standard approval stamps,embed custom image stamps like logos/signatures,and remove existing stamps programmatically-ideal for automating document workflows,branding, status tracking in .NET applications.

Free, privacy-first web tool to extract PDF highlights, notes, and comments into Obsidian, Notion, Markdown, and CSV. 100% offline & local. Live at pdfannotations.com.

Extract reviewer comments hidden behind underlines/highlights in a PDF. One command turns a 'reviewed' PDF into a clean checklist. PyMuPDF-powered, Claude Code skill included.

Kotlin-native PDF library for Android. Create, edit, merge, split, annotate, encrypt PDFs. Affordable iText7 alternative — free for personal use, $99/year for commercial.

PDF Compare Viewer V2 - Side-by-side PDF comparison with native annotation support, sync/zoom, and hand pan/zoom

Zotero 9 plugin for reviewable vocabulary candidates from PDF underlines

Zero-dependency Rust→WASM PDF engine + TypeScript SDK — read, edit, render, OCR, sign, redact and convert PDFs (↔ Office/HTML/RTF/PDF-A) with no third-party libraries.

A lightweight client-side PDF viewer and annotation tool written using Codex