Wave editor

Audio Lab

Audio tools

Free Online Audio Editor

Trim, change volume, adjust speed, reverse, and export audio directly in your browser.

Trim Audio Precise cuts and fades Change Volume Boost or reduce gain Change Speed Tempo from 0.25x to 4x Reverse Audio Flip the full waveform

Drop an audio file here

WAV, MP3, M4A, OGG, FLAC, or WebM depending on browser support.

Choose file
File No audio
Duration 00:00.000
Selection 00:00.000

Waveform

Ready to trim

Import audio to view the waveform
00:00.000 / 00:00.000

Audio Lab

Free Online Audio Editor

Audio Lab combines a practical browser audio editor with clear guides for common editing tasks. You can trim a clip, raise or lower volume, change playback speed, reverse audio, preview the waveform, and export a new file without installing software.

How to use Audio Lab

A simple workflow for quick audio edits

Choose the tool that matches your task, then add an audio file from your device. Each tool keeps its own workspace, so a file loaded in Trim Audio does not automatically appear in Change Speed or Reverse Audio.

After the file opens, use the waveform to preview timing, drag trim handles when needed, adjust the controls in the side panel, and listen before exporting. Edits are temporary until you download the finished file.

  1. 1. Pick a tool Start with Trim Audio, Change Volume, Change Speed, or Reverse Audio. The tool determines which controls and export behavior are shown.
  2. 2. Import audio Drop a file onto the editor or use the file picker. Browser support determines which source formats can be decoded.
  3. 3. Preview the waveform Use playback, the playhead, zoom, and pan controls to inspect the part of the file you want to edit.
  4. 4. Adjust the edit Set precise trim points, choose a gain level, select a speed value, or reverse the complete waveform depending on the active tool.
  5. 5. Export a new file Choose an available output format and download the edited audio. The original file on your device is not overwritten.

What you can do

Core editing tools in one browser workspace

Trim audio Cut a selected section, remove an unwanted part, add short fades, and snap handles near zero crossings for cleaner edits. Change volume Boost quiet recordings, reduce clips that are too loud, preview gain changes, and optionally normalize the exported file. Change speed Slow down or speed up speech, lessons, drafts, and effects while preserving pitch with tempo processing. Reverse audio Flip a complete clip backwards for sound design, transitions, experiments, or checking how a reversed sample behaves. Export edited audio Download WAV, AIFF, and browser-supported recorder formats when available, with mono and peak normalize options. Browser-based editing Process audio locally in the browser for everyday edits without waiting for an upload queue or installing a desktop app.

Supported audio formats

Input depends on your browser; export options are shown when supported

Most modern browsers can import common formats such as WAV, MP3, M4A/AAC, OGG, FLAC, and WebM, but exact support varies by browser and operating system. If one file will not open, converting it to WAV or MP3 first usually solves the issue.

For export, Audio Lab always offers uncompressed WAV and AIFF choices. Additional compressed formats such as WebM Opus, OGG Opus, or M4A can appear when the browser exposes a compatible MediaRecorder encoder. The audio formats guide explains when to choose each one.

Privacy-first browser editing

Designed so audio processing happens on your device

Audio Lab is built around the Web Audio API, which lets the editor decode, preview, process, and export audio inside your browser session. The tool is designed not to upload your audio file to an Audio Lab server for editing.

This local workflow is useful when you need a quick edit but do not want to send raw recordings through a remote queue. It also means your available memory, browser, and device performance affect very large files. Read the privacy guide for a plain-English explanation of what stays local and what normal website data can still exist.

Common use cases

Useful for podcasts, voice notes, lessons, samples, and quick cleanup

Audio Lab is best for practical, one-step edits: trimming silence from a voice memo, cutting a podcast excerpt, raising the level of a quiet recording, slowing down an interview section for transcription, reversing a sound effect, or exporting a short clip for a presentation.

It is not meant to replace a full digital audio workstation with multitrack mixing, destructive repair tools, or mastering chains. The goal is to give you a focused editor that is fast to open, easy to understand, and backed by guides that explain the tradeoffs behind each edit.

FAQ

Frequently asked questions

Is Audio Lab free to use?

Yes. The editor can be used in the browser without creating an account. Some site pages may include advertising in the future, but ads are not placed inside the editing controls or empty tool states.

Are my audio files uploaded?

The editor is designed to process audio locally in your browser. Your file is decoded and edited on your device for the core editing workflow.

Why does format support vary?

Audio decoding and recording support comes from the browser. Chrome, Safari, Firefox, and mobile browsers do not expose exactly the same codecs.

Can I export MP3?

MP3 export is not currently built in. WAV and AIFF are available, and some browsers offer compressed recorder formats such as WebM, OGG, or M4A.

Does changing speed change pitch?

The speed tool uses pitch-preserving tempo processing, so voices should not become artificially high or low just because the tempo changed.

Can I edit very long files?

Long files can work, but performance depends on device memory and browser limits because processing happens locally.