Overlay or replace audio on a video in your browser—free, no upload. Adjust volume and timing, export locally with NanoPix.
- What can Add audio do?
- Overlay or replace audio on a video in your browser—free, no upload. Adjust volume and timing, export locally with NanoPix.
- Are my files uploaded to your servers?
- No. NanoPix runs in your browser with WebAssembly. Your video, audio, or image files stay on your device—we never receive them.
- Is browser-based editing private?
- Yes. Processing happens locally on your machine. Nothing is sent to NanoPix servers for encoding or storage.
- Is this tool free?
- Yes. NanoPix tools are free to use in a modern browser. No account is required for basic editing and export.