Audio & media · focused workspace

WAV Cue Marker Editor

Add or replace labeled cue points in a WAV file while preserving its audio data, then export the marked WAV and a marker inventory.

WAV cue pointsEditable projectsLocal processing

Source → inspect → export

Open project

Preparing the worked example…

Your source & settings

Settings & options

Open your media file

Files stay in your browser. Try the built-in sample first.

Choose file

Upload a supported media file up to 20 MiB. The example is generated locally.

Inspect your result

PREVIEW & EXPORT

Output file

Know what changed

RIFF/WAVE PCM or IEEE-float files with one data chunk, maximum 20 MiB. RF64/RIFX are unsupported. Existing cue and adtl chunks are rebuilt; unrelated chunks and audio bytes are preserved. Applications vary in cue-label support.

Choose another output above or open Export files.

Explore the example

Add or replace labeled cue points in a WAV file while preserving its audio data, then export the marked WAV and a marker inventory.

What you can inspect

WAV cue points — ID, Sample, Seconds, Label.

Keep the result you need

Use the output selector to inspect each generated file, then download it. Save a project to keep source inputs and settings together. Result files and editable projects serve different purposes.

Processing & file support

Upload a supported media file up to 20 MiB. The example is generated locally.

Your working session

Processing runs locally in a worker with a 30-second cancellation limit. Undo and redo keep up to 20 edits in this tab. Project files include imported assets and are limited to 40 MiB. There is no automatic saving.

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Using WAV Cue Marker Editor

Add or replace labeled cue points in a WAV file while preserving its audio data, then export the marked WAV and a marker inventory.

Start with the worked example in marker list json, then paste your own source or open a text file.
Adjust existing cue points. Change one setting at a time so you can understand its effect.
Choose “Write WAV cue points”. Inspect the wav cue points before using the result.
Download the selected output, inspect other files in Export files and save a project if you want to reopen the same inputs.

Example

Try the built-in example, inspect wav cue points and compare the result after changing one option.

Questions & answers

What does WAV Cue Marker Editor do?

Add or replace labeled cue points in a WAV file while preserving its audio data, then export the marked WAV and a marker inventory.

What are the important limitations?

Can I save and reopen my work?

Yes. Save a project JSON file containing your inputs, settings and any imported assets. Projects are limited to 40 MiB. Undo/redo stores up to 20 edits in this session and is not saved in the project. There is no automatic saving.

How do imports and output previews work?

Upload a supported media file up to 20 MiB. The example is generated locally. Text previews show up to 150,000 characters; downloads include the complete output. Tables show 50 rows per page; CSV files include all rows.