Cut an episode into timestamped chapters

Podcasters save time before release when a long episode needs clear entry points for listeners who want a particular moment.

Cut an episode into timestamped chapters. The output stays on your device and is ready to copy or adapt as soon as it appears.

How to use

Enter the total episode duration in minutes on the first line.
Then list the topics or key moments, one per line, in the order they appear.
Run the composition to get chapters with timestamps.
Review the timestamps and adjust the list if a section should move.
Copy the result into your episode notes, then clear the fields.

Example

The sample gives a 42-minute duration and five simple topics. After composing, look at how each topic receives a timestamp spread across the episode. Because the tool does not listen to audio, check the markers before publishing.

Input

42
Introduction
First topic
Second topic
Conclusion

Limits and formats

The tool does not read the audio file or detect real transitions.
Timestamps are calculated from the duration and list you provide, not from sound analysis.
A list that is too vague or too long can produce chapters that are not very useful.
Check every timing against the episode before publishing, especially if the audio has silence or pauses.

Where processing happens

Composition happens entirely in your browser. The duration and topics you enter stay on your device and are not sent to any service. You can try several lists and copy the result without creating an account.

Frequently asked questions

Can I use hours and minutes?

The duration is expected in minutes. For a long episode, convert hours to minutes before entering the value, otherwise the chapter distribution will be wrong.

Do the timestamps match the audio exactly?

No, they are estimated from the duration and topics. Listen to the episode or check the timeline to correct the markers before publishing them.

How many topics can I list?

No exact number is stated. Still, keep it reasonable: a short and clear list gives chapters that are easier to browse than a long series of details.