Real-time tab audio processing
Processes audio from a website tab in real time, so you can adjust sound while media is playing instead of exporting or reloading content.
Browser FX
Browser FX is a Chrome extension for real-time tab audio effects, with per-tab settings, effect chains and MIDI control—no account required.
Overview
Browser FX is a Chrome extension that adds real-time audio effects to the sound coming from a browser tab. It is designed for websites that play audio or video, letting you shape playback without leaving the browser.
The extension combines a 22-effect library, per-tab settings, and up to four effects in series. It also supports MIDI control and an audio-reactive visualizer, so users can adjust sound with either the popup interface or external hardware while audio is playing.
According to the listing, all processing happens locally in the browser using the Web Audio API, and no account is required. That makes it a fit for people who want direct control over tab audio without a separate sign-in flow or external audio service.
Key features
Large effect library
Offers 22 effects, including reverb, filters, EQ, bitcrusher, delay, chorus, flanger, tremolo, pitch shifting, compressor, DJ EQ, tape stop, and lo-fi tape.
Effect chaining and reordering
Allows up to 4 effects to be stacked in series, with drag-to-reorder controls and per-effect bypass so you can build a custom chain.
MIDI controller mapping
Supports one-click MIDI learn for external controllers, with knobs mapped to parameters and pads or buttons mapped to effect on/off.
Per-tab saved settings
Keeps separate settings per tab and saves them automatically, which helps when you want different processing for different sites or sessions.
Visualizer and live controls
Includes an audio-reactive cymatic visualizer and full stereo processing, alongside on-screen knobs for live adjustment.
Common use cases
Listening and playback customization
Shape the sound of music or streaming audio in a browser tab with effects like reverb, EQ, delay, or bitcrushing while the content keeps playing.
Tab-specific audio setups
Create different sound chains for different tabs, such as one setup for music and another for a video or livestream, without changing the rest of the browser session.
Hardware-assisted control
Use a MIDI controller to adjust effect parameters with physical knobs and buttons, which is useful for hands-on audio experimentation or performance-style control.
Sound design and experimentation
Build lo-fi, tape, or heavily processed textures by stacking effects in series and duplicating an effect within the chain.
Visual feedback while editing audio
Monitor how the sound is changing with the built-in cymatic visualizer while you tweak parameters live.
Pros and Cons
Pros
- Applies effects in real time to audio from a tab.
- Supports a broad set of 22 effects, including both tonal and creative processing.
- Lets users build chains of up to four effects and reorder them.
- Works with per-tab settings, which is useful when different sites need different sound treatments.
- Supports MIDI control and keeps mappings active even when the popup is closed.
- Processes audio locally in the browser and does not require an account.
Cons
- The listing does not provide pricing details, so the free or paid status is unclear from the available source.
- The extension is limited to the browser workflow described on the page; it is not presented as a standalone desktop audio processor.
- Supported hardware is described generically as any MIDI controller, but the page does not name specific models or compatibility limits.
FAQ
How do I use Browser FX?
It is a Chrome extension for processing audio from a tab in real time. The page says you click the icon, choose or stack effects, and then control them from the popup or a MIDI controller.
Can I use different effects on different tabs?
Yes. The product page says settings are saved per tab, so different tabs can keep different effect chains.
Does it work with MIDI controllers?
The page says Browser FX can map any MIDI controller with one-click MIDI learn, and that knobs control parameters while pads and buttons toggle effects.
Does Browser FX send my audio to external servers?
The listed workflow is real-time processing in the browser. The page also says all processing happens locally using the Web Audio API and that no account is required.
Is Browser FX free?
The source page does not list a paid plan or in-app purchase details, so the pricing model is not clear from the available evidence.
Quick Facts
- Platform
- Chrome extension
- Category
- Entertainment
- Source domain
- chromewebstore.google.com
- Ratings
- 5.0/5 from 5 ratings
- Users
- 416 users
- Version
- 0.1.0
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