Audio
13 toolsBrowser-native audio utilities: trim, merge, record voice, clean noise, and convert sound files.
Tool list
Microphone Tester
Test your microphone in the browser with delayed replay, live waveform, frequency spectrum, peak meter, and noise floor readings.
Voice Recorder
Record voice from your microphone in the browser, preview the clip, and export it as MP3, WAV, or M4A without uploading audio.
Video to Audio
Extract audio from video, trim with a real waveform editor, and export to MP3, WAV, FLAC, OGG, Opus, AAC, or M4A directly in your browser.
Change Audio Speed
Slow down or speed up MP3, WAV, M4A, AAC, OGG, FLAC, and Opus audio without changing pitch. WSOLA time-stretching with fade in/out, normalize, and export to MP3, WAV, M4A, OGG, or FLAC — all in your browser.
Audio Trimmer
Trim audio precisely with a real waveform editor. Cut MP3, WAV, M4A, AAC, OGG, or FLAC and export to the format you need — all in your browser.
Audio Normalizer
Normalize audio loudness to a target LUFS or peak with EBU R128, ReplayGain, or peak modes. Prevent clipping with a max true-peak limit and export to MP3, WAV, FLAC, M4A, AAC, or OGG.
Audio Effects
Enhance audio with normalization, bass boost, noise reduction, EQ, reverb, echo, compression, and stereo widening directly in your browser.
Silence Remover
Automatically detect and remove silent parts from podcasts, voice notes, interviews, and other audio files directly in your browser.
Voice Cleaner
Remove background noise, echo, hum, breaths, and harsh sibilance while enhancing voice clarity for podcasts, recordings, interviews, and more.
Merge Audio
Combine multiple audio files into one. Reorder tracks, crossfade transitions, and export to MP3, WAV, FLAC, OGG, Opus, AAC, or M4A — all in your browser.
Split Audio
Split an audio file into multiple parts by count, duration, or custom markers directly in your browser.
Convert MP3
Convert MP3 files to other audio formats quickly and easily.
Sample Audio Files
Browse, preview, and download free MP3, WAV, OGG, M4A, AAC, and FLAC sample audio files curated from public sources and the AppKiro library — ideal for HTML5 audio, upload tests, streaming demos, and prototypes.