
AI PDF Annotator
Smart PDF Reader with AI-Powered Annotations
What it does
Unlike other PDF tools that just highlight text, AI PDF Annotator lets you chat with AI directly on your documents. Select text or screenshot diagrams/formulas/code — AI explains instantly. Answers are saved as annotations on the PDF. What's different: - Screenshot Q&A — ask about visuals, not just text - Each annotation keeps its own conversation context - Works with Ollama — 100% offline, no data leaves your machine - Free, open source, no account needed
Does a similar job
all alternatives →



aiPDF - talk to books, docs and podcasts2023 · ▲381ethical, powerful AI assistant for students and researchers

More ai this month
the category →
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com
Astute▲585Automate your B2B brand going viral, with new media creators
AI · 19d ago · company-app.joinastute.com


Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
AI · 27d ago · cactuscompute.com


Launched alongside, March 2026
the whole month →

Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com


