DJ Mixer Practice v1.62
A

Load an MP3

Deck A

--
READY
GRID -- verify by ear
manual play starts now
-- 0.0%
4
Shift or Alt + pad clears a stored hot cue.

CH A

MASTER

HEADPHONES

CH B

B

Load an MP3

Deck B

--
READY
GRID -- verify by ear
manual play starts now
-- 0.0%
4
Shift or Alt + pad clears a stored hot cue.
LibraryLocal Tracks
0 tracks
Storage: calculating...
Drop MP3 or audio files here to import. BPM and beatgrid prep runs automatically. Edit title, artist, BPM, or notes directly in the table.
Load
RECORDING

Master Output Only

Cue signals are never connected to the recording bus.

Ready Clips: 0
MONITORING

Cue monitor

Top Cue On or Cue Muted only affects live monitoring. REC always captures the master bus.

Master tempo Use MT on each deck when you want tempo changes to preserve pitch.
Shortcut editor
Safe recording Use CH A or CH B CUE to audition tracks. The recording ignores cue sends and stores only the master mix. 
Diagnostics not run yet. Runs graph inspection and a cue-only tone isolation probe.
Full-featuredBuilt for actual practice
No accountOpen and start immediately
Private local filesYour tracks stay on your device
Built-in analysisBPM, grid, and diagnostics

Serious browser DJ practice

A full-featured browser DJ mixer for real CDJ-style practice

If you want a browser toy that plays two files at once, this is not that. DJ Mixer Practice gives you the parts that actually matter when you are trying to get better: local track import, BPM and beatgrid prep, cue points, hot cues, quantized loops, tempo control, EQ, filters, sync, recording, and a library that helps you judge your source files.

You can open it fast, work with your own music, repeat a transition ten times, and listen back without leaving the browser. That speed matters because repetition is the real product here.

Mix on two proper decks

Load, cue, nudge, loop, sync, and transition with a workflow that keeps the useful friction.

Prep tracks inside the app

BPM, beatgrid, key, and quality checks are part of the same workflow, so prep and practice are not split across disconnected tools.

Review what you actually played

Record the master output and hear timing, phrasing, tonal balance, and transition decisions with less self-deception.

Serious deck and mixer control

  • Two decks, cueing, hot cues, loops, tempo fader, sync, EQ, filters, and crossfader.
  • Designed for repeated transition practice rather than passive playback.
  • Useful for beatmatching, phrasing, and mixer discipline.

Integrated track prep

  • Load your own audio files and keep them private in the browser.
  • See BPM, beatgrid confidence, key, duration, and audio quality flags.
  • Use manual grid correction when a track needs human judgement.

Browser audio tech with a point

  • Local decoding and storage keep import fast and private.
  • Beat-aware loop handling and BPM outlier correction make the workflow more trustworthy.
  • Recording and diagnostics help you judge both your mixes and your source material.

What you can practice

Skills that transfer beyond the browser

  • Cueing with intention instead of guessing
  • Phrase timing and section awareness
  • Hot cue and loop usage that supports structure
  • Tempo matching, phase correction, and sync judgement
  • EQ and filter transitions without low-end chaos
  • Recording and reviewing your own decision-making

How the tech works

Built like a tool, not dressed like one

Local-first library

Your browser handles import, storage, and playback, so you can work with your own files without a forced upload step.

Musical BPM and beatgrid logic

The analyzer resolves common half-time and double-time mistakes and exposes the grid clearly enough for manual correction when your ears disagree.

Quantized loops and clean exits

Loop entry is snapped to the grid and loop release preserves audible playback position, which makes practice closer to how you expect a proper deck to respond.

Guides that explain the workflow

Read pages that cover both technique and the tech under the hood

Practice FAQ

Is this just a lightweight browser toy?

No. It is a full-featured practice tool with two decks, waveform views, BPM and beatgrid analysis, cue points, hot cues, quantized loops, mixer controls, recording, and library diagnostics.

Are my audio files uploaded to a server?

No required upload is used for practice. Tracks are selected from your device and loaded locally in the browser.

Can I correct the beatgrid if the analyzer gets a track wrong?

Yes. You can tap tempo, nudge BPM, shift the grid earlier or later, set the nearest grid line to the playhead, and halve or double the BPM interpretation.

Can I use it for both manual mixing and sync-based practice?

Yes. You can treat it as a manual beatmatching environment, a phrasing trainer, or a fast review space for cue, loop, and sync workflows.

Can I record and listen back to practice sessions?

Yes. The recorder captures the master output so you can review timing, levels, EQ decisions, and transition structure.

Does the library tell me anything about source quality?

Yes. The library includes bitrate and a quality-oriented diagnostic readout so suspiciously weak, clipped, or bandwidth-limited files are easier to spot.

Open the mixer, load your own music, and work on the part of DJing that only improves through repetition.

Open mixer Read practice guides