Turn Up the Web to Maximum Power
The simplest way to amplify audio beyond 100% on YouTube, Spotify, and any website. This free audio booster extension makes every tab louder with one slider. No account, instant results.
Add to Chrome - It's FreeSound Boost Pro is a free Chrome extension that works as an audio amplifier for your browser. It lets you increase volume beyond the normal 100% limit on any website, including YouTube, Spotify, Twitch, SoundCloud, and online courses. Whether you need to make a quiet video louder or amplify low audio on a podcast, Sound Boost Pro pushes sound up to 600% using Chrome's built-in Web Audio API.
A Complete Audio Amplification Toolkit
Professional-grade sound boosting with a dead-simple interface. One slider gives you full tab volume control with automatic per-site memory.
Amplify Up to 600%
Push past your browser's built-in volume ceiling. Sound Boost Pro uses the Web Audio API GainNode, the same engine used in professional audio software, to amplify any audio source cleanly.
Universal Compatibility
YouTube, Spotify Web Player, Twitch, SoundCloud, podcasts, online courses, embedded players. If audio plays in your browser, Sound Boost Pro amplifies it.
Automatic Site Memory
Toggle "Remember for this site" and your amplification level is locked in per domain. Come back tomorrow and your volume is already set. All stored locally on your device.
One-Tap Toggle
Switch the amplification on and off without resetting your level. Great for quick A/B comparisons between original and boosted audio.
Live VU Meter
A segmented color-coded meter gives you instant visual feedback. Green is safe, yellow is moderate, orange is strong, red is maximum amplification.
Zero Data Collection
No accounts. No analytics. No network requests. Sound Boost Pro runs entirely on your device. Your settings never leave your browser. No third-party code.
Amplify Your Audio in Three Steps
Go from quiet to crystal-clear loud in under ten seconds.
Install the Extension
Click "Add to Chrome" from the Chrome Web Store. Installation takes one click, no browser restart. Compatible with Edge, Brave, Opera, and Vivaldi.
Drag the Slider
Open Sound Boost Pro from your toolbar and slide to your target amplification level. Use preset buttons for quick jumps.
Hear the Difference Instantly
Audio amplification starts immediately on the current tab. No page refresh needed. The sound booster processes audio in real time.
Frequently Asked Questions
Quick answers to common questions.
Does Sound Boost Pro work on YouTube, Spotify, and Netflix?
Yes, it works on YouTube, Spotify Web Player, Twitch, SoundCloud, and virtually any site that plays standard HTML5 audio or video. Netflix and Disney+ use DRM-encrypted audio (Widevine) which Chrome protects at the hardware level. This is a Chrome security limitation that no extension can bypass.
How high can I amplify the volume?
The slider ranges from 100% (normal) to 600% (6× amplification). At higher levels (400%+), you may hear some distortion on already-loud source material. This is normal digital audio behavior. A built-in dynamics compressor helps smooth out harsh peaks.
Will Sound Boost Pro slow down my browser?
No. The extension is under 50KB in size and uses native Chrome APIs, the same Web Audio API that Chrome uses internally for audio processing. There is no measurable performance impact on page load speed or browser memory.
Does Sound Boost Pro collect my data?
Absolutely not. Sound Boost Pro makes zero network requests. Your per-site volume settings are stored only in Chrome's local storage on your own device. No analytics. No telemetry. No third-party SDKs. The extension runs entirely in your browser with no external servers.
Does it work on Edge, Brave, and other Chromium browsers?
Yes! Any browser based on Chromium supports Chrome extensions. Sound Boost Pro works on Google Chrome, Microsoft Edge, Brave, Opera, and Vivaldi. Install it from the Chrome Web Store. These browsers can all access the same store.
How do I increase YouTube volume beyond 100%?
Install Sound Boost Pro and navigate to any YouTube video. Click the extension icon in your toolbar and drag the slider above 100%. Sound Boost Pro can amplify YouTube volume up to 600% (6× amplification). Your setting is saved automatically if you enable per-site memory, so every YouTube video plays at your preferred level.
How do I make my computer louder?
Sound Boost Pro increases your browser's audio output beyond the system volume limit. If your PC speakers or headphones are already at maximum system volume and audio is still too quiet, this extension amplifies the browser's sound up to 600%. It works on any website playing audio or video, no need to adjust your operating system settings.
Can Sound Boost Pro make a quiet video louder?
Yes. Sound Boost Pro works as a video volume amplifier for any video playing in your browser. If a video has low audio, whether on YouTube, a course platform, or a social media site, simply increase the slider to amplify it. The extension processes the tab's audio output in real time, so it works on any video player, including embedded players.
Does Sound Boost Pro include an equalizer or AI audio enhancement?
No. Sound Boost Pro is intentionally focused on one thing: amplifying volume beyond the browser's default limit. It does not include an equalizer, AI audio enhancement, or background noise removal. This focused design keeps the extension lightweight (under 50KB), fast, and free of unnecessary permissions.
Is Sound Boost Pro really free?
Yes, Sound Boost Pro is 100% free with no hidden costs, premium tiers, or in-app purchases. There are no ads, no account registration, and no subscription. The extension is free to install from the Chrome Web Store and free to use without any limitations.
How do I control volume for individual browser tabs?
Sound Boost Pro provides tab volume control for whichever tab you have active. Click the extension icon, adjust the slider, and the amplification applies only to that tab's audio. With per-site memory enabled, your volume preference is remembered for each website domain. To amplify a different tab, simply switch to it and adjust the slider.
Ready to Amplify Your Browser Audio?
Thousands of users trust Sound Boost Pro as their daily audio amplifier. Free forever, no strings attached.
Add to Chrome - It's Free