Online Audio EffectsNEW
Real-time browser audio effect rack: chain 26 effects — EQ, reverb, delay, chorus, distortion, pitch — and export WAV
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AllFreeTool Online Audio Effects is a real-time audio effect rack that runs entirely in your browser: 26 effects spread over six groups — gain & dynamics, frequency & filters, time & space, modulation, distortion and pitch — and when you switch several on they are chained in the order they appear in the panel, like moving the faders of a mixing desk.
Drop in a track, hear every change as you drag the sliders, then render the very same chain offline and download a 16-bit WAV. Every sample is processed on your own machine — the audio is never uploaded to a server.
Why use Online Audio Effects on AllFreeTool?
26 Effects
Compression, limiting, gating, 3-band EQ, reverb, delay, chorus, phaser, distortion, pitch shift and more.
Instant Feedback
Sliders change the sound as you move them and toggles never reload the page, so A/B comparisons are instant.
Local Processing
Audio stays on your computer — nothing is uploaded and no file is ever collected.
WAV Export
The same chain is rendered offline and written as a 16-bit PCM WAV ready for your editor.
How to use Online Audio Effects
Choose an Audio File
Upload a local audio file, or generate a 4-second demo tone to try the effects right away.
Build the Chain
Pick effects by category, switch them on and tune the sliders — the live preview updates instantly.
Export
Click “Render and download WAV”; the chain is rendered offline and the file appears with its peak and RMS levels.
Common questions
Is my audio uploaded to a server?＋
No. Everything happens in the browser: the preview uses a live AudioContext graph and the export renders the same graph in an OfflineAudioContext, so the audio data never leaves your computer.
What happens when several effects are enabled?＋
They are chained from top to bottom, so the effect listed higher is applied first. “Reverb → Delay” and “Delay → Reverb” do not sound the same — switch between categories to hear both orders.
Why does the pitch shift sound slightly delayed?＋
Pitch shifting uses granular overlap-add (WSOLA), which needs an analysis window to align the grains. A larger window gives a steadier pitch but adds more delay (0.1 s by default). The export compensates for that internal delay automatically, so the result is the same length as the source and stays time-aligned.
Why are some effects unavailable in my browser?＋
The noise gate, bit crusher, frequency shifter and pitch shift need AudioWorklet. If your browser does not support it, the page says so and those four effects are skipped while the other 22 keep working.
What format is the exported WAV?＋
16-bit PCM stereo WAV at the same sample rate as the source file, with the same duration (the pitch shifter's internal delay is compensated).