Built for Everyone
Who Works With Audio
AudioSlice is a free, browser-based audio editor that runs entirely on your device. No account. No upload. No waiting. Just open the page and start editing.
Our Mission
Most online audio editors ask you to upload your files to their servers, create an account, and wait for processing. We built AudioSlice because we believe that shouldn't be necessary.
Modern browsers are capable of decoding, displaying, editing, and re-encoding audio entirely within the browser tab — with no round-trip to a server. AudioSlice leverages the Web Audio API to do exactly that: professional-grade editing that respects your privacy and works instantly, regardless of your internet speed.
What You Can Do
- Upload one or multiple audio files (MP3, WAV, OGG, FLAC, M4A, AAC, WebM)
- Visualize audio as a waveform with a precise timeline
- Select regions by clicking and dragging on the waveform
- Cut out unwanted sections or isolate specific clips
- Step through an unlimited undo history
- Combine multiple files into a single joined track
- Download your edited audio as a high-quality WAV file
- Use dark mode or light mode, whichever you prefer
The Technology
AudioSlice is built entirely with standard web APIs — no external libraries, no frameworks, no server-side code.
Web Audio API
Decodes audio files into raw PCM AudioBuffers for manipulation and playback.
Canvas API
Renders the waveform, timeline, and playhead in real-time with every edit.
WAV Encoder
A built-in PCM encoder converts the edited AudioBuffer to a downloadable WAV file.
Zero Network I/O
No fetch calls for your audio data. Everything stays inside your browser tab.
Privacy Commitment
When you load an audio file in AudioSlice, it is decoded directly into your browser's memory using JavaScript. It is never sent over the network, never written to a remote database, and never seen by us or any third party.
When you close or refresh the browser tab, all audio data is released from memory. There is no persistence, no cloud sync, and no session storage of your files.
We serve display advertisements through third-party ad networks. These ads may use cookies per their own privacy policies, which is separate from your audio files. See our Privacy Policy for full details.
Ready to Edit?
No sign-up required. Drag a file onto the editor and start cutting.
Open AudioSlice Editor →