Audio
Edit sound with the Web Audio API. Trim, reverse, normalise, change speed and export clean WAV files locally.
18 free audio tools. Every tool runs in your browser, works without an account, and processes files locally whenever the browser allows it.
By the utils.sbs team · Reviewed November 2026
The shelf
All audio tools
18 tools · updated for 2026
- Audio TrimmerpopularCut a precise section from an audio file and download WAV.
- Audio ConverterDecode MP3, M4A, OGG or WAV and export a clean WAV file.
- Audio Speed ChangerSpeed up or slow down audio while changing pitch naturally.
- Reverse AudioPlay any sound backwards and export the reversed WAV.
- Audio NormalizerRaise quiet recordings to a consistent peak level.
- Audio Volume BoosterAmplify or attenuate audio with headroom protection.
- Audio FadeAdd a smooth fade-in and fade-out to any audio clip.
- Audio JoinerCombine multiple audio files end-to-end into one WAV.
- Ringtone MakerTrim a song to a 30-second ringtone and export it.
- Waveform GeneratorRender a transparent waveform PNG from any audio file.
- Audio MetadataRead duration, sample rate, channels and file details.
- Audio to Base64Encode a local audio file as a Base64 data URI.
- Base64 to AudioDecode a Base64 audio string into a playable file.
- Voice RecorderRecord from your microphone and download a WAV file.
- Audio Mono ConverterMix stereo audio down to a single mono channel.
- Trim SilenceAutomatically remove quiet lead-in and tail from audio.
- Audio Pitch ShifterShift pitch by semitones using playback-rate resampling.
- Audio EqualizerApply quick low, mid and high shelf adjustments.
How this shelf works
About audio tools
Audio tools handle the small, repeatable jobs that show up between real work: cut, boost, convert. They are built as focused utilities, so each page does one job without asking you to create an account or install software.
Open a tool, add your input, adjust the settings, and download the result. Processing happens in the browser using the platform APIs available for that file type. Files are not uploaded to a server, so the tool keeps working offline once the page has loaded.
Looking for something else? Browse the full tool index or search the catalogue from the homepage.
Audio tool questions
Are audio tools free?
Yes. Every audio tool on utils.sbs is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use a audio tool?
No. The tools are designed to process input in the browser whenever the platform API allows it. Files are not uploaded to a server for processing.
Do I need to install anything to use these tools?
No. Everything runs in a modern web browser. Open a tool page, use the workspace, and download the result.
How do I choose the right audio tool?
Each tool page describes what it does, its input and output formats, the engine it uses, and its limitations. Start with the description that matches your job, then open the tool page for the workspace and step-by-step guide.