Cruxly — AI Summarizer for Video, PDF & More

Free AI PDF summarizer and video summarizer for YouTube — plus a chat that remembers everything you analyzed.

Cruxly turns any YouTube video or PDF into a structured summary in about two minutes, then keeps a chat open so you can talk to the content afterward. Paste a YouTube link or upload a PDF from the popup or side panel. Cruxly pulls the video's captions, or transcribes the audio if there are none, and extracts the PDF's text — then builds a summary with key points and structure, plus a full timestamped transcript for video. No captions? Cruxly still transcribes it, using Google's Chirp 2 speech recognition. Most YouTube summarizers just fail on caption-less videos. The chat is what people come back for. Once an analysis is ready, ask it anything: what a point meant, how two arguments compare, or for a three-bullet summary for your notes. For PDFs, answers are grounded in the exact text of your document, not the model's general knowledge, so it won't invent something that isn't there. What you get: • AI summary with key ideas and structure, for YouTube videos and PDF documents • Full timestamped transcript for video • A chat that remembers the whole analysis • Results in 12 languages, regardless of the source language • Export to PDF, Markdown, or DOCX • Right-click any YouTube or PDF link to analyze it, no need to open the tab first Free with no account: one analysis a day. A free account raises that to three a day and saves your history. Pro removes the daily limit and supports longer videos and larger files. Cruxly doesn't store the video or PDF file itself, only the extracted text and the result, and only if you're signed in. See the privacy policy for details.