🎬 AI-Powered Video Notes Extension

Watch Video.
Wisely.

Wisdio AI lives in your browser sidebar — capture subtitles from any video, take timestamped Markdown notes, and let AI help you extract the essence. Stop rewinding. Start learning.

100% Free to Use
BYO Key Use Your Own API
Privacy Data Stays Local
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I was drowning in an ocean of video — and couldn't find the single sip of water I needed.

As someone who struggles with mental stamina, I constantly found myself overwhelmed by the sheer flood of streaming video. A simple question — "How do I set up skills in Claude Code?" or "At what point in this calculus course does the professor cover the Mean Value Theorem?" — would force me to sit through 40-minute tutorials or rewatch entire lecture series from start to finish.

Podcasts were no different. To find the one moment where a creator shared their insight on a business model, I'd have to listen to the entire episode. Every time, the same exhausting pattern.

The root cause? Search results can never precisely match the question inside a video. Cultural barriers, commercial incentives, and algorithmic noise conspire to make searching within streaming media feel like finding a needle in the ocean. As the Chinese proverb goes — "Of three thousand streams, I only need one sip" — yet I was drowning before I could find it.

So I built Wisdio — a name born from Wise + Video. A browser extension that extracts the essence from any video, saves you hours of watching, and helps you find that one sip of clarity in the endless stream.

One sidebar. Everything you need.

Turn passive watching into structured knowledge.

Subtitle Extraction

Every word spoken in a video, extracted as raw text — bypassing platform restrictions. Feed the full transcript to AI for a summary or outline, or pull lines directly into your notes as timestamped quotes.

  • Works on YouTube, Bilibili, and more
  • Click any line to jump to that timestamp
  • Export full transcripts for offline use
  • Send to AI for summary, translation, or outline
Wisdio AI Wisdio AI
100%
Subtitles 94 lines
0:12 In this lecture, we explore the foundations of machine learning and neural networks.
0:31 The key difference between supervised and unsupervised learning is the presence of labels.
0:48 Let me show you a concrete example using gradient descent to train a model.
1:05 We start by initializing the weights randomly and computing the forward pass.
1:24 The loss function measures how far our predictions deviate from the ground truth.
1:42 Backpropagation computes the gradient of the loss with respect to each weight.
Chat
Notes
Subs
History
Settings
1,247 tokens · $0.0008
What are the key points of this lecture?
AI Assistant
Here are the main takeaways:

1. Gradient descent minimizes the loss function by updating weights iteratively.

2. Backpropagation computes gradients efficiently via the chain rule.
Ask anything about this video...

Ask Anything

Chat with any video or webpage in plain language. Summarize a two-hour lecture. Extract the key arguments. Generate a mind map. All from the same sidebar, with full page context.

  • Multi-provider: DeepSeek, OpenRouter, SiliconFlow & more
  • Visible reasoning (chain-of-thought UI)
  • Up to 100K characters of context
Notes
ML Lecture Notes
Lecture 3 — Gradient Descent
Lecture 4 — Backpropagation
Research Ideas

Notes That Know Where You Are

Write Markdown as you watch. Every note is anchored to the current video timestamp — tap it later to jump back to that exact frame. Your notes become a navigable index of the video.

  • Live Markdown editing and preview
  • Tap any note to return to that moment
  • Export as .md — compatible with Obsidian, Notion, Logseq
Mobile
Tablet
Desktop

Built for Anywhere

A floating widget. Bottom-sheet navigation. Keyboard-aware layout. Wisdio adapts to wherever you're watching — at your desk or on the subway.

  • Works on Kiwi Browser, Lemur, and more
  • Floating widget for instant access
  • Smart keyboard detection on mobile

Built for How You Learn

Real scenarios where Wisdio transforms your workflow

01

Foreign Language Lectures

Watching a full-English YouTube lecture with no subtitles? Wisdio force-extracts the raw transcript, and AI helps you understand in real-time. Take notes in your language while the video plays — each note links back to the exact moment you wrote it.

02

Long-Form Reading

Opened a 30,000-word industry report but don't have time to read it all? Capture the entire page as a "Context Pill" and ask AI: "What are the three core strategies mentioned?" Get the essence in seconds.

03

On-the-Go Learning

On the subway with just your phone? Wisdio's floating widget hovers quietly in the corner. Tap to open a full bottom sheet — read, highlight, ask AI, take notes — all optimized for one-thumb operation.

Up and Running in 3 Steps

No subscriptions. No complicated setup. Just install and go.

1

Install Extension

Add Wisdio AI to Chrome from the Web Store. It takes 10 seconds.

2

Add Your API Key

Bring your own API key from DeepSeek, OpenRouter, or any compatible provider. You control the cost.

3

Open a Video & Start

Navigate to any video, open the sidebar, and start capturing subtitles, chatting with AI, and taking notes.

Your Keys. Your Data. Full Transparency.

Wisdio doesn't charge for AI usage — you use your own API key. We even show real-time token consumption and estimated cost in the panel, so you always know exactly what you're spending. No hidden fees, ever.

DeepSeek
OpenRouter
SiliconFlow
iFlow (心流)
Custom OpenAI-Compatible

Your Notes. Your Data. No Lock-in.

Export everything as clean Markdown files — compatible with Obsidian, Notion, Logseq, and any PKM tool

📦

One-Click ZIP Export

Export your entire knowledge base — timestamped video notes, AI chat summaries — as a clean .md bundle.

🔗

PKM-Ready Format

Pure Markdown output. Drag-and-drop into Obsidian, Notion, or Logseq. We're your knowledge outpost, not a data silo.

🔒

Local-First Storage

All notes and conversation history stay in your browser's local storage. Nothing goes to our servers.

FAQ

Common questions about Wisdio AI

Is Wisdio free to use?

Yes! Wisdio is completely free. You just provide your own API key from a supported AI provider. DeepSeek, for example, offers very affordable pricing.

Which video platforms are supported?

Subtitle capture works on YouTube, Bilibili, and other major video platforms. The AI chat and notes features work on any webpage.

Can I use it to study foreign language videos?

Absolutely! Wisdio extracts raw subtitles even when the platform doesn't show them. You can send the transcript to AI for translation, summarization, or explanation in your language.

Is my data safe?

Your notes and conversation history are stored locally in your browser. We don't send your data to our servers. AI requests go directly to your chosen provider using your own API key.

Does it work on mobile?

Yes! Wisdio has a dedicated mobile-optimized UI that works on Chromium-based mobile browsers like Kiwi Browser and Lemur. The floating widget design is built for single-hand operation.

Can I export my notes to Obsidian?

Yes. All notes export as pure Markdown files (.md), fully compatible with Obsidian, Notion, Logseq, and any other PKM tool.

Stop Rewinding. Start Learning.

Turn every video into structured knowledge with AI-powered subtitles, notes, and chat.

Install Wisdio AI — Free