Topic search: Just type what you want to learn.
Intelligent suggestions appear as you type, so “inflation” asks whether you want the underlying causes, current rates, or real-world analogies. Pick your learning speed and explore.
Visual Learning Platform · Windows 10 & 11 · Private beta
Learn complex things fast.Press Alt+E
Tubelight is the visual learning platform that explains whatever you highlight — an interactive UI diagram drawn in real time and a synchronized voice walking you through it, right next to what you are already reading.
Free during beta · 10 visual explanations included · No card needed
Learns with you wherever you read:ChromeEdgePDFsWordSlackNotionVS Code
How it works
Three seconds from “what?” to “oh.”
No new tab, no prompt to write, no wall of text to wade through. Watch the visual learning engine happen in real time.
- 1
Highlight it
LiveSelect any difficult text in any Windows app — browser, PDF, Word, chat, or code.
- 2
Press Alt + E
One universal shortcut anywhere on Windows. No new tabs, no prompt engineering required.
- 3
See it and hear it
Your window snaps left. An interactive UI diagram draws itself while a voice walks you through it.
Photosynthesis — Biology 101.pdf
Chapter 4 — Making food from light
Plants do not eat. They build. Inside every leaf sits a factory that takes three cheap ingredients and turns them into fuel. The light-dependent reactions split water and store energy in ATP and NADPH. What comes out the other side is sugar — and the oxygen you are breathing right now.
The process runs in two stages, and the second one does not need light at all, which is why the old name for it stuck around long after it stopped being accurate. Textbooks still print the diagram as a single loop, which is where most of the confusion starts.
4.2 — The Calvin cycle takes the ATP and NADPH banked in stage one and fixes carbon into a three-carbon sugar. Six turns of the cycle produce one glucose molecule, at a cost the plant is entirely willing to pay.
PressAlt+E
TTubelightVisual explain
“The light-dependent reactions split water…”
Built to be looked at
It doesn’t summarise. It draws.
Most tools hand you another wall of text to wade through. Tubelight builds the visual model your brain was trying to form — systems, flows, and concept maps with voice explanation.
Tubelight Engine · Visual Pipeline
Real-time SynthesizerStep 1 · Input
Highlighted Text
“The light reactions split water...”
Step 2 · Core
Visual Synthesis
Vector Diagram + Audio Stream
1. Vector Canvas60 FPS Render
Progressive SVG drawing with color-coded flow paths and anatomy callouts.
2. Natural VoiceoverLow-latency TTS
Synchronized audio narration matching the visual step currently drawing.
Systems, drawn as systems.Zero text clutter
Local Knowledge Graph
Saved on deviceRecent Explanations
🧠
ReopenHuman Memory Stages
4 slides · 0:45 audio
🌱
ReopenPhotosynthesis Calvin Cycle
Vector diagram · 0:38 audio
📈
ReopenWhy Inflation Happens
4 step slides · 0:52 audio
Everything you learned, kept.Instant 0ms access
Diagrams, not paragraphs
Flows, cycles, timelines, anatomies — whatever shape the idea actually has in your head.
Voice starts before the ink dries
Narration and visual elements stream in parallel, so you hear the voice while the diagram takes shape.
Nothing leaves your machine
Explanations and history live locally on your device. The text you highlight is never stored.
Visual Learning Platform
Why UI diagrams help you learn 3x faster.
Reading walls of text creates cognitive fatigue. Tubelight synthesizes dynamic visual UI models and synchronized audio that map directly to how your brain stores knowledge.
Interactive slides you can actually follow.
Complex ideas are broken into numbered visual panels, each one dynamically drawn and captioned, narrated in logical order.
Didn’t land?
Steerable learning: Ask for it a different way.
“Simpler.” “As a timeline.” “Give me a real-world analogy.” The diagram gets redrawn until the concept clicks — and you can keep asking follow-up questions in the interactive side drawer.
Real-world Analogy
Think of inflation like a packed auction room.
When 10 bidders each get handed a stack of free cash, nobody gets richer — the paintings just sell for 10x higher.
- More cash chasing the same fixed goods
- Suppliers raise prices to balance surging demand
- Your purchasing power drops unless your wages match
Re-drawn in 1.2sOne-click re-steer
Side Chat
You
“Can you explain it as a real-world analogy?”
Tubelight
Explained as an auction room analogy with 3 core real-world takeaways.
↑
It explains with voice while it draws.
Visual elements and voiceover stream simultaneously, leveraging Dual-Coding Theory so your mind absorbs the structure effortlessly.
0:18 / 0:45
Snaps beside your work
Your active window moves left, the Tubelight visual panel slides in right. Drag the edge to resize — your reading context is never covered up.
Instant learning, zero setup
Install once and the global Alt + E shortcut works everywhere. Start with 10 free visual explanations with no sign-in or credit card required.
Your reading stays private
The text you select is processed in ephemeral memory and never logged or stored on remote servers. All your diagrams and notes live on your machine.
Start learning visually today.
Join students, researchers, and engineers who use Tubelight to understand complex topics fast on Windows. Includes 10 free visual diagram explanations at signup.
Frequently Asked Questions
Everything you need to know
How Tubelight uses UI and voice synthesis to help you learn faster on Windows.
What is Tubelight and how does it speed up learning?
Tubelight is a visual learning platform built for Windows. Instead of summarizing text with more text, Tubelight applies Dual-Coding Theory: pressing Alt + E instantly generates an interactive UI diagram and synchronized voice walkthrough right beside what you are reading. Visualizing concepts as flows, anatomies, cycles, and systems helps people understand and retain complex topics up to 3x faster.
How does the Alt + E shortcut work across Windows apps?
Highlight any confusing passage in any application—Google Chrome, Edge, Adobe Acrobat, Word, Slack, Notion, or VS Code—and press Alt + E. Your active window docks left while Tubelight slides in on the right, rendering a progressive vector diagram with synchronized voice narration in under 3 seconds.
What types of topics can Tubelight explain?
Tubelight is designed for deep learning across disciplines: science, engineering, biology, economics, programming, medicine, and mathematics. Whether you are deciphering a dense research paper, academic textbook, or codebase, Tubelight draws the underlying mechanisms, flows, and relationships.
Can I adjust or steer the visual explanation if it doesn't click?
Yes. You can dynamically steer any diagram with a single click—requesting it 'Simpler', 'As a timeline', or 'With a real-world analogy'. You can also ask follow-up questions in the side drawer to explore deeper concepts.
What does “private beta” actually mean?
The app is finished enough to use every day, but we are letting people in gradually so we can watch how it holds up and fix things quickly. Invites go out in weekly batches. You'll receive a direct download link by email.
Does it cost anything?
We offer 10 full visual explanations (with animated vector diagrams and voice narration) completely free at the start. Pro and lifetime upgrade plans are available for high-volume learners.
Is the text I highlight private and secure?
Yes. Your selected text is processed in memory to synthesize the diagram and narration, and it is never logged or stored on our servers. Your completed explanations, audio, and visual history remain private on your local machine.
Windows only? What about Mac?
Tubelight is built natively for Windows 10 and 11 to support global hotkeys and window-snapping. A macOS version is on our active roadmap, and joining the waitlist with Mac selected helps us gauge demand.
What happens after I request access?
You'll receive an instant email confirming you are on the list, followed by an invitation with the Windows installer and onboarding guide when your batch is ready. No marketing spam.