# audioeditor.org

> A free, browser-based audio editor and a suite of ~40 single-purpose audio tools. All processing runs locally in the browser using the Web Audio API, WebAssembly (FFmpeg.wasm), and Mediabunny — audio files never leave the user's device. No signup, no upload, no cost.

## Overview

audioeditor.org is a free, privacy-first audio editing platform that runs entirely in the browser. It targets podcasters, musicians, voice-over artists, audiobook producers, content creators, students and teachers who need a single audio task done quickly (trim, merge, convert, remove vocals, reduce noise, extract audio from video, and many more) without installing a desktop DAW or uploading files to a server.

Every tool processes audio locally on the user's device. Files never leave the browser. The site is free and requires no account. The brand personality is "precise, private, professional" — the feel of a well-made instrument rather than a generic SaaS template.

## Technology Stack

- **Framework:** Nuxt 3 + Vue 3 (file-based routing, SSR/SSG)
- **Styling:** Tailwind CSS v4 (via `@tailwindcss/vite`), `@tailwindcss/forms`, `@tailwindcss/typography`; Inter font
- **Internationalization:** `@nuxtjs/i18n` v9, `prefix_except_default` strategy, 10 locales
- **Audio processing:** Web Audio API, FFmpeg.wasm (`@ffmpeg/ffmpeg` + `@ffmpeg/core`), Mediabunny (decode/encode/mux/demux/resample), lamejs (MP3 encoding)
- **Waveform UI:** Wavesurfer.js v7
- **Monitoring:** Sentry / TryCatch (sourcemaps uploaded on build)
- **Analytics:** Plausible-style pageview tracking (click.pageview.click), Google AdSense
- **Package manager:** pnpm (workspace monorepo)
- **Testing:** Vitest (unit), Playwright (e2e)

## Internationalization

10 locales are supported. English is the default and served at the root path; all other locales are served under a `/<locale>/` prefix.

| Code | Language | hreflang |
| --- | --- | --- |
| en | English | en-US |
| zh-hans | 简体中文 | zh-CN |
| zh-hant | 繁體中文 | zh-TW |
| ja | 日本語 | ja-JP |
| ko | 한국어 | ko-KR |
| ru | Русский | ru-RU |
| de | Deutsch | de-DE |
| fr | Français | fr-FR |
| es | Español | es-ES |
| pt-BR | Português (Brasil) | pt-BR |

Example: the trimmer tool is at `/tools/trimmer` (English) and `/zh-hans/tools/trimmer` (Simplified Chinese).

## Architecture

The project is a pnpm workspace monorepo. Application code lives at the repo root (Nuxt app), and reusable audio processing is split into workspace packages under `packages/`:

- `@audiotools/core` — core audio I/O via Mediabunny: `decodeFileToBuffer()` (MP3/WAV/FLAC/OGG/M4A/WebM), `encodeWAV()`, `encodeMP3()`, `trimBuffer()`, `mergeSequential()`, `resampleBuffer()`, `downloadBlob()`
- `@audiotools/effects` — DSP processors: bass, treble, compressor, echo, high-pass, low-pass, noise reducer, silence trim, stereo balance, stereo width, equalizer, distortion
- `@audiotools/trimmer` — audio trimming
- `@audiotools/merger` — sequential multi-file merging
- `@audiotools/converter` — format conversion
- `@audiotools/splitter` — audio splitting
- `@audiotools/vocal-remover` — vocal removal/isolation
- `@audiotools/recorder` — microphone recording
- `@audiotools/visualizer` — audio visualization
- `@audiotools/video-to-mp3` — extract audio from video files

Each tool is an independent Vue page under `pages/tools/` with its own module, so tools can be unit-tested in isolation. Shared UI is provided by components in `components/` (e.g. `AudioEffectToolPage.vue`, `AudioToolSeoContent.vue`, `AudioWaveform.vue`, `FileInfo.vue`) and composables in `composables/` (`useAudio`, `useAudioInfo`, `useAudioProcessing`, `useBrowserFfmpeg`, `useFileUpload`, `useToolSeo`). Tool content/SEO copy is data-driven from `data/audio-tools/`.

The full multi-track editor at `/editor` is currently under construction; the page shows a redirect modal that sends visitors to the tools directory.

## Pages

- [Home](https://audioeditor.org/): Landing page — tool directory, trust messaging, feature overview
- [Tools Directory](https://audioeditor.org/tools): Index of all available audio tools
- [Pricing](https://audioeditor.org/pricing): Free-tier pricing information
- [Blog](https://audioeditor.org/blog): Articles and tutorials about audio editing
- [Blog: Ultimate Guide to Free Online Audio Editing](https://audioeditor.org/blog/ultimate-guide-free-online-audio-editing): Guide to browser-based audio editing
- [Contact](https://audioeditor.org/contact): Contact form
- [Privacy Policy](https://audioeditor.org/privacy): Data privacy and file-handling policies
- [Terms of Service](https://audioeditor.org/terms): Usage terms
- [Cookie Policy](https://audioeditor.org/cookies): Cookie usage information

## Audio Tools (Released)

These tools are live and listed in the sitemap. Each is a single-purpose, in-browser tool.

### Editing

- [Audio Trimmer](https://audioeditor.org/tools/trimmer): Cut and trim audio to a specific segment
- [Audio Merger](https://audioeditor.org/tools/merger): Combine multiple audio files into one
- [Audio Splitter](https://audioeditor.org/tools/splitter): Split audio into multiple segments
- [Silence Trimmer](https://audioeditor.org/tools/silence-trimmer): Automatically detect and remove silence
- [Fade Audio](https://audioeditor.org/tools/fade-audio): Add fade-in and fade-out effects
- [Reverse Audio](https://audioeditor.org/tools/reverse-audio): Reverse audio playback
- [Speed Changer](https://audioeditor.org/tools/speed-changer): Change playback speed
- [Pitch Changer](https://audioeditor.org/tools/pitch-changer): Change pitch without altering speed
- [Volume Changer](https://audioeditor.org/tools/volume-changer): Adjust audio volume levels

### Conversion & Recording

- [Format Converter](https://audioeditor.org/tools/converter): Convert between MP3, WAV, FLAC, OGG, M4A and more
- [Voice Recorder](https://audioeditor.org/tools/recorder): Record audio from the microphone
- [Audio Visualizer Video](https://audioeditor.org/tools/audio-visualizer-video): Generate an audio visualization video

### Effects & Filters

- [Bass Booster](https://audioeditor.org/tools/bass-booster): Enhance low-frequency content
- [Treble Booster](https://audioeditor.org/tools/treble-booster): Enhance high-frequency content
- [Echo](https://audioeditor.org/tools/echo-audio): Add echo and delay effects
- [Audio Normalizer](https://audioeditor.org/tools/audio-normalizer): Normalize audio levels
- [Audio Compressor](https://audioeditor.org/tools/audio-compressor): Reduce dynamic range
- [Noise Reducer](https://audioeditor.org/tools/noise-reducer): Remove background noise from recordings
- [Stereo Balance](https://audioeditor.org/tools/stereo-balance): Adjust left-right stereo balance
- [Stereo Widener](https://audioeditor.org/tools/stereo-widener): Widen the stereo image
- [Low Pass Filter](https://audioeditor.org/tools/low-pass-filter): Remove frequencies above a cutoff
- [High Pass Filter](https://audioeditor.org/tools/high-pass-filter): Remove frequencies below a cutoff

### Vocal Processing

- [Vocal Remover](https://audioeditor.org/tools/remover): Remove or isolate vocals from a song

## Audio Tools (Roadmap)

These tools have public roadmap landing pages (served via the dynamic `pages/tools/[slug].vue` route) and are released on a rolling schedule. Each roadmap page shows the scheduled release date, related currently-available tools, and an overview of the planned tool.

- [Audio Looper](https://audioeditor.org/tools/audio-looper)
- [Karaoke Maker](https://audioeditor.org/tools/karaoke-maker)
- [Tempo Detector](https://audioeditor.org/tools/tempo-detector)
- [Key Detector](https://audioeditor.org/tools/key-detector)
- [Metronome Generator](https://audioeditor.org/tools/metronome-generator)
- [Crossfade Joiner](https://audioeditor.org/tools/crossfade-joiner)
- [Podcast Chapter Splitter](https://audioeditor.org/tools/podcast-chapter-splitter)
- [Beat Cutter](https://audioeditor.org/tools/beat-cutter)
- [Audio Ducking](https://audioeditor.org/tools/audio-ducking)
- [Speech Enhancer](https://audioeditor.org/tools/speech-enhancer)
- [Loudness Meter](https://audioeditor.org/tools/loudness-meter)
- [Loudness Matcher](https://audioeditor.org/tools/loudness-matcher)
- [Mono Converter](https://audioeditor.org/tools/mono-converter)
- [Sample Rate Converter](https://audioeditor.org/tools/sample-rate-converter)
- [Channel Extractor](https://audioeditor.org/tools/channel-extractor)
- [Polarity Inverter](https://audioeditor.org/tools/polarity-inverter)
- [DC Offset Remover](https://audioeditor.org/tools/dc-offset-remover)
- [De-esser](https://audioeditor.org/tools/de-esser)
- [Hum Remover](https://audioeditor.org/tools/hum-remover)
- [Clip Restorer](https://audioeditor.org/tools/clip-restorer)
- [Silence Gap Inserter](https://audioeditor.org/tools/silence-gap-inserter)
- [Spectrum Analyzer](https://audioeditor.org/tools/spectrum-analyzer)

## Source Code

- [GitHub Repository](https://github.com/airyland/audioeditor-org): Full source code, issues, and contributions
- [Nuxt Configuration](https://github.com/airyland/audioeditor-org/blob/main/nuxt.config.ts): Application configuration and build setup
- [Packages Directory](https://github.com/airyland/audioeditor-org/tree/main/packages): Workspace packages for modular audio processing
- [Tools Pages](https://github.com/airyland/audioeditor-org/tree/main/pages/tools): Per-tool Vue pages
- [Tool Content Data](https://github.com/airyland/audioeditor-org/tree/main/data/audio-tools): Data-driven tool copy and release plan

## Optional

- [Product Definition](https://github.com/airyland/audioeditor-org/blob/main/PRODUCT.md): Product vision, target users, and design principles
- [Implementation Guide](https://github.com/airyland/audioeditor-org/blob/main/IMPLEMENTATION_GUIDE.md): Technical implementation details and architecture
- [Quick Start Checklist](https://github.com/airyland/audioeditor-org/blob/main/QUICK_START_CHECKLIST.md): Getting started guide for developers
- [Tool Roadmap](https://github.com/airyland/audioeditor-org/blob/main/docs/tool-roadmap.md): Planned audio tools and release schedule
- [Sitemap](https://audioeditor.org/sitemap.xml): Machine-readable list of all indexed pages
- [Robots](https://audioeditor.org/robots.txt): Crawler directives