Can I record a sound that already played?

No. Capture begins when you confirm the share, so anything that has already passed is not in the file. The practical approach is to have the page paused with the sound ready, confirm the share, and then press play in the page so that only the sound you want is captured.

Why is my recording silent?

Almost always because the share was confirmed without ticking the option to share the tab's audio, which is off by default. The tool detects the missing audio track and says so specifically. Otherwise the source is protected content, which the platform will not let be captured at all.

Do I need to trim the result?

Usually, yes. Capture starts at confirmation and ends when you press stop, so there is normally a second or two of silence or of unrelated sound at each end. The trimmer and the cutter are the tools for tidying that up, and neither is part of the capture itself.

Can it capture sound from another application?

No. This captures a browser tab's audio, which is playback from that page. Sound made by a desktop application needs the system audio recorder, and even that depends on the browser and platform offering a whole screen option whose audio is genuinely the machine output.

What format do I get?

A 16-bit WAV. The live capture is held in a compressed form because that is what the browser can write continuously, and it is decoded on stop before being written out, so the file you download is uncompressed and ready for editing.

Quick Sound Capture

You Might Also Need

Browser Tab Recorder

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Streaming Audio Recorder

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System Audio Recorder

Record system audio output

Audio Trimmer

Trim audio files to keep only the parts you need

Quick Sound Capture records whatever a browser tab is playing, aimed at grabbing a sound you just heard rather than at a planned session. Confirm the share and the take begins immediately.

What is Quick Sound Capture?

Press the record control, pick the tab that is making the sound and tick the box that shares its audio. Recording starts as soon as you confirm, so the useful part is to have the sound ready to play again or to start it after the share is set up.

What the panel does and what it asks of you:

One record control that opens the browser's share dialog instead of its own device list.
A hint telling you to select the playing tab and enable its audio, since that option is off by default.
A live timer with a pulsing indicator while the take runs.
A preview player and a download once the take is processed, with a label giving duration, channels and sample rate.
A filename built from the prefix sound-capture plus the timestamp of the take.

Everything hard about this is timing rather than encoding. Capture begins when the share is confirmed, so a sound that has already finished cannot be included, and the practical approach is to set up the share with the tab paused and then start playback. The audio route is the usual one for tab capture: video is requested only because the audio option requires it, the video track is stopped at once, and the audio stream goes into a media recorder. On stop that compressed capture is decoded and written as a 16-bit WAV locally. If the share was confirmed without the audio option, the tool detects that there is no audio track and says so in the words of the situation, which is the most common way this goes wrong on a first attempt.

What you cannot do with it:

You cannot capture a sound that has already passed; the take starts at confirmation, not before.
There is no trimming inside the tool, so the useful moment is surrounded by whatever else was playing.
Protected content is refused or arrives silent, since the platform blocks its capture.
Only one tab is recorded, so a sound made by another tab or by the machine at large is not included.
Nothing is metered, so a very quiet or a clipping source is captured exactly as it was.
It captures the whole tab's output, including any other sound that page happens to make.

Use it for a short grab: a notification sound, a bark of laughter from a video, a jingle, or a short line you need for something else. Because the take starts at the moment of confirmation, set the page up so the audio is one press away, and plan to trim the ends afterwards rather than trying to catch the exact start and stop. This is a quick capture by design: the point is that a sound is grabbed in two presses rather than by opening a recording application. Because tab audio is off by default in the share dialog, the most common failure is a silent file from a share confirmed in a hurry, which is the case the panel names directly.

How to use Quick Sound Capture

Get the tab ready with the sound cued but not yet playing, since capture starts the moment you confirm the share.
Press record, choose that tab and enable the option to share its audio.
Start playback in the page immediately after confirming, and let the sound finish.
Stop the take, then download the WAV and trim the ends afterwards.

When to use Quick Sound Capture vs related tools

Quick Sound Capture is for short grabs from a page, where speed matters more than length. Browser Tab Recorder is the same mechanism presented for longer takes, and Streaming Audio Recorder is the version built for a whole stream with its own guidance. System Audio Recorder reaches outside the browser where the platform permits it, and Audio Trimmer is the obvious follow up for cutting a short sound out of the take.

Privacy & Security

This tool runs entirely in your browser — no data ever leaves your device. There is no server round-trip, no upload, no logging, and no account required. Your input is processed locally using client-side JavaScript and is never stored, transmitted, or accessible to anyone else. When you close the tab, everything disappears.