EBU R128 loudness, RNNoise denoising, FFmpeg 8.1 transcoding, BPM detection — all running on your CPU. No upload queues, no per-hour billing, no audio leaving your device.
Every JAD Audio tool processes recordings locally using FFmpeg compiled to WebAssembly (with multi-threaded SIMD where supported), the RNNoise neural denoiser, and the Web Audio API. Your podcast, interview, or voice memo never leaves your browser tab.
Drop up to 5 episodes. JAD chains RNNoise → Strip Silence → EBU R128 → True-Peak Limit → MP3 and hands you publish-ready files. Unlimited hours, your CPU.
Loudness, silence, AI denoise, leveler — broadcast-grade post-production locally in your browser.
Two-pass EBU R128 loudness normalisation in your browser. Hit -16 LUFS for podcasts, -14 for Spotify/YouTube — true-peak limited, FFmpeg 8.1 engine, no upload.
Detect and cut silences below a threshold (default -40 dB, 0.5 s minimum) from any recording. Tighten interviews and solo podcasts in seconds.
Browser-based RNNoise removes background noise from voice recordings without sending audio to a server. Same engine used in OBS Studio and Discord — running on your CPU.
Smooth out loud and quiet passages so voices sit consistently in the mix. Broadcast-style compression with adjustable threshold, ratio, attack, and release.
Apply a true-peak ceiling (-1 dBTP default) so your podcast or master never clips on streaming codecs. Inter-sample peak aware.
Tame harsh 'S' and 'T' sounds in close-mic'd voice recordings. Frequency-selective compression around 5-9 kHz.
One-click voice EQ chain: high-pass at 80 Hz, gentle low-mid cut, presence boost at 3 kHz. Built for podcast and voiceover production.
Drop up to 5 episodes. JAD runs RNNoise → silence stripping → EBU R128 normalisation → true-peak limiting and hands you publish-ready files. Unlimited hours, your CPU.
Convert MP3, WAV, M4A, and other audio to timestamped text using a local Whisper-class speech model. Runs on your runner — no audio leaves the machine.
MP3, WAV, FLAC, AAC, OGG, Opus, M4A — convert, transcode, and extract from video.
Pull MP3 audio out of MP4, MOV, MKV, WebM, AVI files up to 2 GB. No upload — runs in your browser via FFmpeg 8.1 with multi-threaded WASM.
Pull uncompressed WAV PCM audio from any video file — for editing, transcription, or archival. 100% local, FFmpeg 8.1 engine.
Convert MP3 to WAV PCM for editing or transcription. Choose sample rate and bit depth. No upload required.
Encode WAV files to MP3 with selectable bitrate (64-320 kbps). LAME-quality encoding via FFmpeg 8.1 — locally.
Convert FLAC files to MP3 with selectable bitrate. Preserves ID3 tags and album art. Browser-based.
Encode WAV to FLAC for ~50% file-size reduction with zero quality loss. Adjustable compression level (0-12).
Wrap your MP3 audio in a FLAC container for archival. Note: this preserves what's in the MP3 — it can't recover lossy data.
Convert iTunes M4A and Apple Voice Memo files to universally-compatible MP3. Choose bitrate, preserve metadata.
Convert OGG Vorbis files to MP3 for wider device compatibility. Adjustable bitrate, no upload.
Convert Opus voice notes (WhatsApp, Telegram, Discord) to MP3. 100% local — your messages never leave your device.
Trim, merge, split, fade, pitch shift, time stretch, channel routing.
Cut start/end timestamps from any audio file. JAD re-encodes once at the source quality — your file never leaves the browser.
Concatenate MP3, WAV, FLAC, M4A files end-to-end. Optional crossfade between tracks. All processing local.
Split a long audio file into multiple parts by fixed duration, manual timestamp markers, or automatic silence detection. Each part downloads as its own file.
Reverse audio for creative effects or hidden-message hunts. Sample-accurate reversal, browser-based.
Apply linear, exponential, or logarithmic fades at the start and end of any audio file. Adjustable duration.
Change audio pitch by semitones or cents while keeping the original duration intact. FFmpeg rubberband-style processing.
Stretch or compress audio duration (0.5x-2x) while preserving original pitch. Perfect for matching video edits.
Adjust playback tempo by percentage. Like time-stretch but expressed as a tempo % — natural for musicians.
Separate left and right channels from a stereo recording. Useful when each channel is a different mic.
Duplicate or pseudo-stereo-widen a mono recording into a stereo file. Useful for embedding mono voice into stereo masters.
Hit Discord/WhatsApp size targets, change bitrate, sample rate, channels.
Hit a specific file size (5 MB, 16 MB, 25 MB, 100 MB). JAD calculates the right bitrate for your duration and target.
Change bitrate of MP3, AAC, OGG, Opus files. CBR or VBR. Choose from 32-320 kbps.
Resample audio to 8, 16, 22.05, 44.1, 48, 88.2, 96, or 192 kHz. High-quality polyphase resampling via FFmpeg.
Auto-compress any audio file under Discord's 25 MB free-tier upload cap. Picks the best bitrate for your duration.
Auto-compress any audio file under WhatsApp's 16 MB media cap. Voice-optimised bitrate selection.
Boost (or attenuate) audio so its loudest sample sits at a chosen ceiling. Faster than EBU R128 — for quick consumer-grade leveling.
BPM detection, spectrum, ID3 tagging, album art, waveform images, PII bleeping.
Detect the tempo of any song using local energy-based onset detection and autocorrelation. Pure browser CPU, no upload, no account.
Generate a static spectrogram from any audio file. Radix-2 FFT with a Hann window and a viridis colour map — runs locally in your browser.
Edit title, artist, album, year, genre, track number, and embedded album art on MP3 and M4A files. No upload — your music stays private.
Pull the embedded cover image out of any tagged audio file. Saves as PNG or JPG at original resolution.
Render a waveform image at any size and color. Perfect for podcast cover art, social posts, or audiograms.
Mark timestamps to bleep, mute, or beep over names, numbers, and other PII. Manual selection plus optional silence-detection assist.
Auphonic charges per hour. Descript caps your monthly minutes. JAD processes on your CPU/GPU — there's no quota to bill against. Pro+Media unlocks 100 GB streaming per job (unlimited duration), batches up to 100 files, AI noise reduction, and EBU R128.
See Pro + Media pricing