Audio Tools
A growing set of browser-based utilities for everyday audio work. Trim clips, change speed or pitch, shape tone with an equalizer, reverse a take, record from your microphone, merge several files, or apply popular effects — all designed to run on your device without sending the media to a server for the core workflow.
Volume boosting lives on the home page as the main Sound Booster experience. Here you will find the rest of the toolkit: open any card below to load a file, adjust, and download — free, with no account required.
Audio Trimmer
Cut intros, endings, or a segment from a track. Set start and end, then export only what you need.
Open tool →Speed Changer
Speed up or slow down playback. Useful for practice, reviews, or fitting audio into a time limit.
Open tool →Pitch Shifter
Shift pitch up or down without leaving the browser — for keys, voice demos, or creative edits.
Open tool →Equalizer
Shape tone with multiple bands. Reduce mud, lift presence, or tame harsh highs before you export.
Open tool →Audio Reverse
Play and export a reversed version of your file. Simple effect, fully local processing.
Open tool →Voice Recorder
Record from your microphone in the browser, then convert, boost, or trim the take.
Open tool →Audio Merger
Combine several clips into one timeline. Join intros, voiceovers, and outros without desktop software.
Open tool →Bass Booster
Add deep, punchy low end with controlled gain so the bass hits harder without turning the whole track into mud.
Open tool →8D Audio Converter
Create a moving stereo image so the sound feels like it rotates around the listener — best with headphones.
Open tool →432 Hz Converter
Retune a track from standard 440 Hz toward 432 Hz pitch — a simple shift you can preview and export in the browser.
Open tool →Slowed + Reverb
Slow the tempo and add spacey reverb for the classic slowed aesthetic — all processed on your device.
Open tool →Nightcore Maker
Speed up and raise pitch together for the nightcore sound. One preset-style tool instead of dialing speed and pitch separately.
Open tool →What you can build fully in the browser
Modern browsers can decode common audio formats, apply gain and filters, record from the microphone, and export a new file — all without sending the media to a server. That is why Sound Booster focuses on local tools: quieter files get louder, formats change, and editors stay private on your device.
Volume Boost, Video Boost and the converters are available from the main navigation. This page is the map of the wider toolkit — trim, speed, pitch, EQ, reverse, recorder, merge, bass, 8D, 432 Hz, slowed + reverb and nightcore — each with the same privacy-first approach.