A clear interface without needless settings
Choose the tab, file format, and stop time on one screen. You can start recording browser audio in seconds.
Chrome extension · tab audio recording
Free tab audio recorder for Chrome
Pulse is a free tab audio recorder for Chrome that captures browser sound without the microphone or background noise. Record webinars, online lectures, podcasts, live streams, and music to MP3, WAV, or WebM — even from several tabs at the same time.
Recording protection
Closing Chrome should not destroy hours of recorded audio
Pulse saves captured audio to your computer while the recording is still in progress. If Chrome closes unexpectedly or the computer shuts down, the part already recorded will not disappear and can be recovered. You do not need to keep the extension window open either: recording continues in the background.
Multiple sources
Record several tabs at once — each to a separate file
Pulse records several tabs in parallel without mixing their audio. Format, timing, monitoring, and pause settings remain independent for every recording. MP3, WAV, or WebM files are created while recording, so there is no long conversion wait after you stop. Pulse can also record local audio or video opened in Chrome from a file:// page.
Features
Recording adapts to what you need
Record a tab without hearing it
Mute the selected tab in your speakers or headphones while Pulse continues recording its audio.
Record several tabs simultaneously
Capture audio from multiple Chrome tabs in parallel. Each tab is saved as a separate audio file with its own settings.
Delayed start
Schedule the recording to start later, giving you time to find the right moment in a video, launch a live stream, or open a presentation.
Record without long periods of silence
Smart pause skips silence and resumes automatically when sound returns. Not a single moment of audio is lost.
Recovery after a crash
The part already recorded stays on your computer after Chrome closes, the browser crashes, or the computer shuts down unexpectedly.
MP3, WAV, or WebM without waiting
Choose the format before you start. The file is created during recording, so you do not have to wait for a long conversion afterward.
Stop recording when a condition is met
Set a finish time in advance, or stop automatically when the page changes or after a chosen period of silence.
Filename templates
Build filenames from the tab title, website, date, time, duration, and format. Pulse will name new recordings automatically using your template.
Buffering does not make recordings longer
If playback stops because of a slow or unstable connection, Pulse pauses the recording and continues when playback resumes. The waiting time does not increase the file duration.
How Pulse took shape
Features grounded in real recording needs
Before building Pulse, FormaCode studied reviews from users of popular tab-audio recording extensions. Even positive reviews described workflows that were still missing. Those requests became part of the product requirements, while further ideas emerged as Pulse was designed around a smoother recording experience.
User requests built into Pulse
Delayed start and automatic stop
Start recording later, then stop it at a chosen time, when the page changes, or after a selected period of silence.
Filename templates
Build a name from the tab title, website, date, time, duration, and file format.
Recording local files
Pulse works with audio and video opened in Chrome from a file:// page.
MP3 without a long conversion wait
The file is created while recording and is ready as soon as the recording ends.
Ideas developed while designing Pulse
Record without listening
Keep the selected tab silent in your speakers or headphones while its audio is still saved to the file.
Several tabs at the same time
Pulse records them in parallel without mixing their audio: every tab gets a separate file and its own settings.
Smart pause
Pulse can automatically pause a recording after a chosen period of silence and resume when sound returns. On pages with compatible media players — including YouTube, Instagram, and VK — Pulse also synchronizes recording with playback: it pauses along with the video or audio and continues when the user starts playback again. As a result, pauses that are not part of the original content do not enter the audio file, so the finished recording does not need to be trimmed by hand.
Pulse brings together requests from real users and solutions developed through the product's own design process.
Free and Pro comparison
The free version already covers the essentials. Pro saves time and gives you more control
The free version already records tab audio to MP3, WAV, or WebM, works in the background, recovers after a crash, supports delayed start, and offers preset stop intervals. Pro is useful when you need several recordings at once or more flexible automation.
| Feature | Free | Pro |
|---|---|---|
| Core features | ||
| Record one tab | Yes | Yes |
| WebM, MP3, and WAV | Yes | Yes |
| Recording duration | Unlimited | Unlimited |
| Recovery after a crash | Yes | Yes |
| Buffering does not make recordings longer | Yes | Yes |
| Delayed start | Yes | Yes |
| Quality and automation | ||
| Recording quality | Up to 256 kbps | Up to 320 kbps |
| Preset stop intervals | Yes | Yes |
| Custom stop time | No | 1 minute to 24 hours |
| Stop when the page changes | No | Yes |
| Stop after a chosen period of silence | No | Yes |
| Additional features | ||
| Record several tabs simultaneously | No | Yes |
| Record without tab playback | No | Yes |
| Skip long silence and resume when sound returns | No | Yes |
| Filename templates | No | Yes |
Pulse Free and Pulse Pro
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What you can record
Browser audio becomes a separate audio file
- AI-generated voiceovers and text-to-speech audio
- Audio from a webinar, online course, or lecture
- A podcast, interview, or internet radio stream
- A live stream or long broadcast
- Audio from several browser tabs at the same time
- Audio from a local file opened through file://
- Tab audio with a timer and automatic stop
Privacy and files
Your recordings stay on your computer
No audio uploads to a serverBackground recordingRecovery after a crashMP3 up to 320 kbpsLossless WAVCompact WebMLocal recording librarySupport for file:// pages