AudioDing

Most free audio sites ask you to upload a file, wait in a queue, and download the result. AudioDing does the work inside the browser tab instead. You drop in an MP3 or WAV, the page decodes it locally, and the export is created on your device. The homepage lists a 50 MB file limit. The privacy page says audio, waveforms and filenames are never sent anywhere, and it links to a guide for checking that yourself in the browser's network tools.

The 29 tools fall into five groups. Editing covers trimming, splitting, joining, reversing, a low-pass filter, and an MP3 tag editor that changes ID3 fields without re-encoding the file. Converting handles WAV, MP3, M4A and OGG, and pulls audio out of MP4, MOV and WebM video. The analysis tools find BPM, key and Camelot code, detect pitch, draw waveform images, and tune guitar, bass, ukulele and violin through the microphone.

Three tools use models that run on your device: background noise removal, speech to text with Whisper, and text to speech with five Kokoro voices. The transcription page asks you to confirm a model download of about 30 MB before it starts, so the first run costs some bandwidth and a short wait. The transcript comes back with timestamped segments. Both speech tools are English only, even though the site itself is available in 11 languages.

This suits someone with one quick job and no wish to make an account for it. A podcaster cutting a clip, a DJ checking a track's key, or a musician who needs a tuner on a borrowed laptop all fit. Local processing matters most when the recording is private, like an interview or a voice memo. It isn't a multitrack editor, and the file limit rules out long uncompressed sessions.

The tools are free. The privacy policy says the public pages may show ads and use analytics where consent allows, and that both stay outside the sandboxed editor where files are handled.