Revision that explains, not just repeats
Reading the same page again is the slowest way to revise. What helps is having it explained: what happens first, what it causes, why each part matters. Upload the page and you get exactly that, a teacher's walkthrough of your own material, with the camera on each part as it's named and the things that flow and move shown moving.
Good for
- The figure you never quite got: the nephron, the cardiac cycle, the nitrogen cycle, a transformer, the Krebs cycle diagram in your notes.
- The night before the exam: ask the question you expect ("Explain how the kidney filters blood") and watch the answer on the picture you'll be tested on.
- Commutes and breaks: a one-minute video is easier to rewatch on the bus than a page is to reread.
- Studying in your own language: textbook in English, explanation in Urdu, Arabic, Hindi or Spanish if that's how you think.
- Sharing with your study group: send the video to a friend who missed the lecture.
Tips for a good result
- Photograph the page flat and straight, in good light, with the diagram filling most of the frame.
- One diagram per video works best. A whole page works too: it picks the main idea, or the one you ask about.
- Ask a specific question. "How does the heart's electrical system make it beat?" gives a sharper video than "the heart".
- After the first video, the studio suggests other things the same page could teach. One page, several short lessons.
How it works
- Photograph the pageA flat, sharp photo of your notes, textbook figure or lecture slide.
- Ask what you need to knowPick Diagram to video, add the photo and type your question, or leave it empty for the main idea.
- Watch and rewatchIn about two minutes you get a narrated video on your own picture. Download it to watch offline.
Questions
Can it read my handwriting?
A neat, clear page usually works. Messy or faint handwriting is harder; a printed figure from the textbook is the most reliable.
Is my picture redrawn?
No. The video is made on the exact picture you upload, so every label matches your source. Only the camera, highlights, labels and moving dots are added.
Which languages?
Eleven: English, Arabic, Urdu, Hindi, Spanish, French, Portuguese, German, Italian, Russian and Polish. Narration, captions and labels are in the language you pick, even when the picture is in English.
Is it free?
You can try it free with a Google sign-in. Students and teachers who sign in with a school email (.edu, .ac.uk, .edu.pk and the like) get ContentRoof Pro free.
Updated 2026-11-14