Document chatbot that queries PDFs and provides page-number citations
Use
Summaries, documents & PDF
Upload PDFs, YouTube videos, web articles, or meeting audio to summarize and ask questions. Beyond summary quality, what matters is whether answers point to the source passage, how many files per day are free, and whether login is required. Papers that need citations and lectures you just want to skim call for different tools.
Tools for this use 25
More filters in the full tool list .
A PDF Q&A tool that excels at reading docs with tables and images
The most popular all-around conversational AI for text, images, and code
The simplest tool to upload a PDF and ask questions right away
A conversational AI strong at reading and writing long texts
A Naver app that turns meeting and lecture recordings into text and summaries
Academic search showing research consensus on questions at a glance
A Korean STT service that transcribes and summarizes audio and video
An AI research assistant that finds papers and organizes them into tables
An AI bot that joins meetings to record, summarize, and sync data to work tools
Conversational AI integrated with Google Search, Gmail, and Drive
Gemini built right into Gmail and Google Docs.
A research notebook that answers only from your files with citations
A free extension that sends YouTube transcripts to ChatGPT for summaries
Document AI for querying multiple PDFs organized in folders
A Korean service summarizing videos, PDFs, and web posts in Korean.
A Korean AI search engine specialized in papers and academic sources
A workplace AI operating directly within Word, Excel, and Teams
An AI assistant that writes and summarizes directly inside Notion docs
A meeting assistant for real-time English transcription
Ask questions directly on PDFs opened in your browser via Chrome extension
Paraphrasing tool that rewrites English sentences in different ways
A browser extension to summarize and translate any webpage from the sidebar
An AI meeting assistant that records and summarizes Zoom and Google Meet calls
An app that automatically transcribes phone calls into text.
Recommendation by situation
- When exact citations are required for papers & assignments Gemini Notebook Free plan — Shows the exact source location for every sentence and offers generous free limits. Handles Korean papers well. · See comparison
- When searching for prior literature Elicit Free plan — Enter a research question to find relevant papers and compare summaries, samples, and results in a table. Best for English papers. · See comparison
- When managing dozens of papers in folders Humata Free plan — Upload entire folders to query multiple papers at once with citation highlights to verify sources. Offers student pricing. · See comparison
- No sign-up ChatPDF Free plan — Drop a single paper and ask questions instantly without signing up when in a hurry. · See comparison
- Student, free Glasp Free — The extension is free, and summaries use your existing ChatGPT or Claude account. No extra cost for videos with captions. · See comparison
- Korean first Lilys AI Free plan — Provides the cleanest Korean timeline summaries and summarizes uncaptioned videos via voice recognition. · See comparison
Comparisons for this use 5
Gemini Notebook · Humata · ChatPDF · Elicit
Best 4 YouTube Summary AI Tools Compared (Free Options)Lilys AI · Glasp · Gemini Notebook · Sider
Gemini Notebook vs Lilys: Which Summary Tool Should You Use?Gemini Notebook · Lilys AI
3 AI tools for meeting summaries, compared — CLOVA Note, Daglo, tl;dvCLOVA Note · Daglo · tl;dv
5 Best AI PDF Summarizers Compared (Free Options Included)Lilys AI · Gemini Notebook · ChatPDF · Claude · Perplexity