Free Audio Tools
25+ browser-based audio tools for everyday work: trim, compress, convert, change speed or pitch, split by silence, analyze LUFS, and more. Everything runs locally in your tab, so your audio stays on your device.
All Available Tools
Audio Compressor
Compress audio files - reduce file size online
Audio Format Converter
Convert between audio formats - MP3, WAV, AAC, FLAC and more
Audio Trimmer
Trim audio files - cut start and end points precisely
Audio Merger
Merge multiple audio files into one
Audio Speed Changer
Change audio playback speed without affecting pitch
Audio Pitch Changer
Change audio pitch without affecting speed
Audio Volume Adjuster
Increase or decrease audio volume levels
Audio Normalizer
Normalize audio volume to consistent levels
Audio Fade In Out
Add fade in and fade out effects to audio
Audio Equalizer Basic
Adjust audio frequencies with basic EQ controls
Audio Bitrate Changer
Change audio bitrate to reduce file size or improve quality
Audio Sample Rate Converter
Convert audio sample rate - 44.1kHz, 48kHz, 96kHz and more
Audio Resampler
Resample audio to different sample rates
Audio Mono Stereo Converter
Convert between mono and stereo audio
Audio Channel Splitter
Split stereo audio into left and right channels
Audio Channel Remover
Remove left or right channel from stereo audio
Audio Silence Remover
Remove silent parts from audio automatically
Audio Clip Maker
Create short audio clips from longer files
Audio Loop Maker
Create seamless loops from audio files
Audio Reverse
Reverse audio files - play backwards
Audio Splitter
Split audio files into multiple parts
Audio Track Extractor
Extract audio tracks from video files
Audio Sample Extractor
Extract samples from audio files
Audio Metadata Editor
Edit ID3 tags and metadata in audio files
Audio Cover Art Adder
Add cover art images to audio files
Audio Cover Art Extractor
Extract cover art images from audio files
Audio Frequency Analyzer
Analyze audio frequency spectrum and distribution
Audio Loudness Meter
Measure audio loudness levels - LUFS, RMS, Peak
Audio Gain Analyzer
Analyze audio gain and dynamic range
Audio Waveform Generator
Generate waveform visualization from audio
Audio Thumbnail Generator
Generate thumbnail images from audio files
How it works
The tools run client-side using modern web APIs (WebCodecs, Web Audio) through the Mediabunny library. You load a file, choose an action, and the page decodes small chunks, applies the transformation, and re-encodes the result. For MP3 export, a tiny encoder module loads in the tab and is registered once per session.
Typical flow: pick a file, set options like bitrate, sample rate, trim points, or semitones, then process and download. Nothing is sent to a server.
Where these tools help
You want to cut two minutes from a lecture before sharing it with your class, but you do not want to install a DAW. Use the audio trimmer and export an MP3 in under a minute.
You are practicing a solo and need it slower but in the same key. The speed changer can time-stretch while preserving pitch.
You recorded a podcast that peaks too high in a few spots. Run it through the loudness and gain analyzers, then normalize to a target level before publishing.
A client sent an M4A but your editor wants WAV. Convert formats in the browser, no round-trips to a server.
You need a quick waveform image for a thumbnail. Generate a PNG from the audio without opening design software.
What to know before using it
Processing time scales with file length and your device. Long uncompressed WAV files consume more memory than MP3 or Opus. Mobile Safari can reload tabs on very large jobs; a desktop browser is more forgiving.
Supported inputs cover common formats (MP3, WAV, FLAC, OGG/Opus, AAC/M4A). Some exports default to MP3 or WAV depending on the tool. Metadata editing works for common tags; embedded cover art support varies by format.