ShiftAny Audio
Convert, edit and polish your audio without it leaving your device.
31 tools to convert formats, trim and join tracks, clean up a voice or measure loudness. Everything plays and runs in your browser, so you hear the result before you download it.
- tools
- 31
- Organized into 4 categories
- formats
- 10
- MP3, WAV, FLAC, OGG, M4A, AAC and the audio in your videos
- systems
- 5
- Windows, macOS, Linux, Android and iOS
- steps
- 3
- Open, choose and download
Where it shines
What changes when your audio never travels to a server.
Free, no catch
No tool sits behind a paywall: the compressor, the de-esser and the LUFS meter are as free as the converter.
Our own audio engine
Effects aren’t the browser’s built-in ones: SH Core processes them in 32-bit floating point, with no clipping between steps. What you hear is what you download.
Your recordings stay with you
Interviews, voice notes or unreleased demos are processed in your browser: nobody else gets to hear them.
No ads, no jingles
No ads on the page, and no jingles or audio watermarks slipped into your recording.
No daily quota
Process as many tracks as you like. Long recordings only depend on your device’s memory and power.
Nothing to install
No software or plugins: record, edit and export from any up-to-date browser, on your phone too.
All 31 tools, one click away
Each link opens the tool directly on ShiftAny Audio, ready to use and with no sign-up.
Convert 12 tools
- Audio ConverterMP3, WAV, FLAC, OGG, M4A and AAC to MP3, WAV, AAC or M4R, one or many at a time.
- MP3 to WAVTurn your MP3s into uncompressed WAV.
- WAV to MP3Shrink your WAVs to MP3 at the quality you choose.
- M4A to MP3Convert M4A audio (voice memos, iTunes) to MP3.
- FLAC to MP3Convert FLAC to MP3 so it plays everywhere.
- OGG to MP3Convert OGG (Vorbis or Opus) to MP3.
- FLAC to WAVConvert FLAC to WAV without losing quality.
- WAV to FLACCompress your WAVs to FLAC without losing a single bit.
- MP3 to M4RMake an M4R iPhone ringtone from up to 40 s of your MP3.
- MP3 to AACTurn your MP3s into AAC (.aac) at the quality you choose.
- Sample Rate ConverterChange the sample rate (44.1, 48, 96 kHz…) and the bit depth, with studio-grade resampling and dither.
- Video to MP3Extract the audio from an MP4, WebM or MOV video as MP3 or WAV.
Edit 8 tools
- Trim AudioPick a start and an end on the waveform and download that section.
- Merge AudioJoin several tracks into one, in the order you choose.
- Fade In and Fade OutAdd a fade-in and a fade-out to your audio, with the length and curve you choose.
- Remove SilenceRemove silence at the start and end and shorten long pauses in recordings and podcasts.
- Change Audio SpeedSpeed up or slow down audio (0.5× to 2×) without the chipmunk voice.
- Change PitchShift up or down by up to 12 semitones without changing the speed.
- Reverse AudioFlip an audio file so it plays from back to front.
- Increase VolumeRaise or lower the volume of any audio (−24 to +12 dB) with a clipping warning.
Optimize 3 tools
Production 8 tools
- Delay and Reverb CalculatorDelay, pre-delay and decay times in ms, and LFO rates in Hz, from the BPM or with Tap Tempo.
- Tone and Noise GeneratorPink and white noise, sine tones and sweeps from 20 Hz to 20 kHz, as WAV.
- Phase and Mid/SideInvert one channel’s polarity, or extract the Mid (center) or Side signal.
- Audio EqualizerAdjust bass, mids and treble with 5 bands and voice presets, and hear the change instantly.
- De-esserTame the harsh “s” and whistling sounds in a voice only when they happen, with an Auto mode that adapts to each voice.
- Dynamics CompressorEven out a voice’s volume with threshold, ratio, attack and release, or with podcast presets.
- Voice RecorderRecord your voice with the microphone, listen to the take and download it as MP3, WAV or its original format.
- LUFS MeterMeasure loudness (LUFS), true peak (dBTP) and loudness range, and compare them with Spotify, YouTube and Apple Music.
SH Core
The engine behind every effect
ShiftAny Audio’s effects don’t rely on the browser’s generic nodes: they’re processed by SH Core, our own audio engine, which runs in your browser and is measured against industry reference tools.
- 32-bit floating point
- ITU-R BS.1770-4
- True-peak limiter
- WAV up to 32-bit float
- Input
- EQ
- Compressor
- Limiter
- Export
What you hear is what you download
Preview and export run the same code and produce bit-identical results. In MP3 and AAC, only the format’s own loss applies.
Chain effects without losing quality
Between one effect and the next, the signal stays in 32-bit floating point: no clipping at 0 dBFS and no requantization.
Studio-grade loudness metering
Metering follows ITU-R BS.1770-4 and is validated against ffmpeg on 17 real recordings: at most 0.02 LU apart.
Mastering-grade resampling
On par with SoX in frequency response and alias rejection: 225 of 225 measured points within 1 dB of its reference.
Figures measured with SH Core version 1.1.0.
Pipeline
From a single file to a full chain
When one tool isn’t enough, the Pipeline joins several in one flow: build the chain once and run it on one recording or dozens, with one output file for each.
One batch, one file per recording
Drop all your recordings into an Input in batch mode: each one runs through the chain on its own, and you download them together.
Settings fitted to every recording
With Auto, the equalizer, de-esser, compressor and silence remover recalculate for each file in the batch.
Try it before you export
Listen to the result up to any step of the chain before you process the whole batch.
Ready-made recipes
- Enhance podcast and voice audio
- Trim
- Remove silence
- Equalizer
- De-esser
- Compressor
- Record and enhance your voice
- Recorder
- Remove silence
- Equalizer
- De-esser
- Compressor
- Prepare audio for Spotify and YouTube
- Fades
- Sample rate
- −14 LUFS
- Add background music to one or more files
- Background music
- Equalizer
- −16 LUFS
Why ShiftAny Audio instead of a typical online audio editor
With audio, uploading and downloading heavy files is half the wait. Here that step doesn’t exist.
| Criterion | Typical online audio editor | ShiftAny Audio |
|---|---|---|
| Your recording | Travels to the website’s server | Never leaves your browser |
| Before you download | You wait for it to process remotely | You hear the result instantly |
| Marks in your audio | A jingle or watermark on free plans | None |
| Daily limit | A few files or minutes a day | No quota |
| Audio engine | Generic browser or FFmpeg effects | SH Core, with metering and resampling validated against ffmpeg and SoX |
| Several steps in a row | Upload and download for each tool | Chained in the Pipeline editor |
Frequently asked questions
Can I use ShiftAny Audio to produce a podcast?
Yes. You can record your voice, remove silences, equalize it, tame harsh esses, compress it with podcast presets and check its loudness in LUFS before publishing, all without leaving your browser.
How do I get audio ready for Spotify or YouTube?
Normalize its loudness to −14 LUFS without the true peak going above −1 dBTP, the level those platforms ask for. The “Prepare audio for Spotify and YouTube” recipe does it in one go and exports a 16-bit WAV with dither.
How does ShiftAny Audio relate to ShiftAny Files?
Files works with documents and PDFs; Audio works with sound. They are separate platforms, each at its own address, built the same way: in your browser and without an account.
Try it with your own file
Open ShiftAny Audio, drop in a recording and hear it processed without it ever leaving your device.
More ShiftAny platforms
- ShiftAny FilesDiscover ShiftAny Files
- ShiftAny ImagesComing soon
- ShiftAny VideoComing soon