Focal: AI YouTube Summarizer

Stop losing the thread on long YouTube videos. Get AI summaries, key insights, and chapters instantly — built for distracted minds.

Stop watching videos you didn't need to watch. YouTube is one of the richest sources of information on the internet — tutorials, lectures, interviews, documentaries, deep dives. It's also an enormous time sink. Focal fixes that. It reads any YouTube video and gives you the key ideas in seconds, right inside a sidebar on the page, without ever leaving YouTube. What Focal does ✨ The moment you open a YouTube video, Focal quietly reads the transcript in the background and sends it to an AI that distills it into a structured, readable summary. By the time you've watched the first minute, you already know what the whole video is about. The summary appears in a sidebar panel on the right side of the page. No new tabs. No copy-pasting links into a separate tool. Everything happens where you already are. How it works ⚙️ Navigate to any YouTube video. Focal activates automatically — no button to click, no menu to open. The sidebar opens and shows a real-time progress bar while the AI reads and processes the transcript. Your summary appears. Read the key points, scan the chapter breakdown, and decide in seconds whether to watch, skim, or move on. Click any section to jump directly to that moment in the video. The player seeks to the exact timestamp. It works on standard YouTube videos, YouTube Shorts. Why it's different from pasting a link into ChatGPT 🆚 Most AI summary tools require you to leave the page, copy the video URL, open a separate app, paste the link, wait for it to load, and then try to read a wall of text next to nothing. Focal lives inside YouTube. The sidebar appears alongside the video. You can glance at the summary while the video is still playing. You never break your flow. Focal also caches your last 20 summaries locally. If you revisit a video, your summary loads instantly — no re-processing, no waiting. ⚡ Key features 🔑 Automatic, zero-click summarization. Focal detects when you land on a video and kicks off summarization in the background. By the time you decide whether you want the summary, it's usually already done. 🤖 Live progress indicator. A progress bar tracks the AI generation in real time so you always know what's happening. No mystery spinners, no guessing if something froze. 📊 Timestamp-linked sections. Every section of your summary is tied to a specific moment in the video. Click a chapter heading to jump directly there. It's the fastest way to skim a long video for the part you actually care about. 🎯 Works with YouTube's SPA navigation. YouTube doesn't reload the page when you click from one video to another. Most extensions break in this scenario. Focal detects YouTube's internal navigation events and seamlessly handles each new video as you browse. 🔄 Smart transcript capture. Focal intercepts YouTube's caption data directly — you don't need to manually enable subtitles or do anything special. It captures the transcript quietly and restores your caption settings exactly as they were. 🎙️ Local summary cache. Your 20 most recent summaries are stored locally in the extension. Revisit a video and the summary appears instantly without hitting the server again. 💾 Persistent sign-in. Your session persists across browser restarts using a secure refresh-token flow. Sign in once and stay signed in, without ever seeing a login prompt mid-session. 🔐 YouTube Shorts support. Focal works on Shorts too, not just long-form videos. Great for quickly deciding whether a 60-second clip is worth the watch. 📱 Who it's for 👥 Researchers and students 🎓 — Skim lecture recordings, conference talks, and explainer videos in a fraction of the time. Use Focal to quickly identify which part of a 3-hour lecture covers what you need before committing to watching it. Professionals 💼 — Stay on top of industry news, product demos, and thought-leadership content without your calendar filling up with "watch later" videos you'll never get to. Curious people 🧠 — You open YouTube to learn something, not to spend an afternoon on it. Focal lets you satisfy your curiosity efficiently and decide when something deserves a full watch. Content creators 🎬 — Research competitor videos, reference channels, and trending topics faster. Get the substance of a video without the pacing. Non-native speakers 🌍 — Following spoken English at speed can be exhausting. Reading a clean, structured summary of the key points is often much more accessible than keeping up with fast speech. Privacy 🔒 Focal only activates on YouTube video pages. It reads the publicly available closed-caption data that YouTube already provides to any viewer. It does not record audio, capture video frames, read your YouTube history, or access any other browsing data outside of youtube.com. Summaries are generated by sending the transcript text (not the video itself) to Focal's AI backend. No video data is transmitted — only the text of the captions. Getting started 🚀 Install the extension, then visit any YouTube video. The Focal sidebar will open automatically. If you want to unlock higher usage limits, sign in with your Focal account at usefocal.xyz — the extension handles the auth handoff automatically and keeps you signed in. Focal — know what a video is about before you watch it. 🎯