Lecture transcriber: turn class recordings into notes
Turn long lecture recordings into notes with on-device AI.
Processed on your deviceHow to transcribe a lecture
- 1
Upload the recording (MP3, M4A, WAV or a video of the class).
- 2
Pick the language the lecturer speaks and start. Long recordings are processed in 10-minute parts, with text appearing as each part finishes.
- 3
Copy the notes or download them as TXT, Word or PDF, with timestamps to jump back to any moment.
Frequently asked questions
How long can the recording be?
Several hours. The audio is split into 10-minute parts so memory use stays low. Expect roughly real-time speed on a laptop and slower on phones; leave the tab open while it works.
Is the recording uploaded?
No. The speech model runs in your browser and the recording never leaves your device. Only the model is downloaded once and then cached.
Should I ask permission before recording a lecture?
Yes. Many universities and lecturers have rules about recording classes, so check before you record or share.