vslzrs

Photosensitivity warning

VSLZRS shows fast-moving, flashing and high-contrast visuals, and it can strobe. A small percentage of people may have a seizure when exposed to certain light patterns or flashing lights, even with no history of epilepsy or seizures.

If you or anyone in your family has epilepsy or has had seizures, talk to a doctor before using VSLZRS. Stop right away and look away from the screen if you feel dizzy, have blurred vision, eye or muscle twitches, disorientation, or any involuntary movement.

Using it for a show? The audience sees these effects too. Keep the photosensitivity limit on (Show → Flash & strobe) and let your venue post a strobe warning.

Don't show this again on this device

Nothing plays until you continue.

vslzrs

SET–

BPM

Input

Show output

NEXT

● Audience window live

● REC 0:00

Blackout · audience sees black

vslzrs

Music visuals for personal use, shows, and more, all in your browser.

Starting the MilkDrop engine…

Locked for the show. Cues, keys and the tools still work.

Cues

Press 1–0 to fire a cue. Shift+number, or clicking an empty slot, stores the preset that's showing.

Fire cues

Cue transition

Flash & strobe

Color Intensity Fade out

Strobe speed

Rate

Automatic hits

Photosensitivity limit: no more than 3 flashes in any second

The limit is off. Fast flashing can trigger seizures in people with photosensitive epilepsy. Warn your audience before using strobe, and keep bursts short.

Looks

Name

Put on cue

A look saves the preset plus which text and image layers are showing, beat response and flash settings. Click a look to recall it; drag to reorder.

Pre-show check

Goes through the setlist you've selected, its presets, looks, layers, fonts and images, plus your audio, output and frame rate, and tells you what needs attention. It test-loads each preset, so run it on the show computer.

Panic & safe preset

Panic (Backspace or the ⚠ tool) stops strobe and flashes, turns off automatic hits, ends blackout, clears anything waiting to fire, and switches to your safe preset.

No safe preset set. Panic keeps the current preset.

Playlist

Pick presets from

Auto-change Shuffle

Change every

Change every

Set a tempo first, by tapping or with Auto. Changes land on the downbeat.

Blend time

Also cut on big bass hits

Tempo detection

Expected range

Auto is off. Press Auto or A to detect the tempo from what's playing.

Auto finds the beat but can't tell which beat is the 1. Tap T once on a downbeat to set it; Auto keeps following from there. Tapping a full tempo switches Auto off.

Blackout

Fade time

While the audience window is open, your preview stays dimmed instead of black, so you can line up the next look.

Setlist

Setlist name

Delete this setlist and all its songs? This can't be undone.

Songs

Start songs

Next and previous song: Page Down / Page Up (most foot pedals and clickers send these) or ] / [.

Song details

Title

Tempo (BPM)

Beat response

Change presets

Every

Presets for this song

Length (m:ss)

Start with look

Text layers during this song

Choose which text layers show when this song starts, and optionally replace their text for this song only.

Notes for you

Show packs

One file with this setlist and everything it uses: looks, cues, text and image layers (with the pictures, GIFs and videos), uploaded fonts and the safe preset. Hand it to another VJ or move it to another laptop.

Text layers Image, GIF and video layers (with their files) Looks and cues Uploaded fonts

Replace my cues with the pack's cues Use the pack's safe preset

Venue profile

Venue name

Saves the fit and keystone, display, resolution, audio devices, gain and beat response for a room. Pick it when you arrive and everything is set back up.

Audience window

Open on display

Chrome and Edge can place the window straight onto a projector and make it fullscreen once you allow window management.

Fit to the screen

Shrink the picture in from each edge for projectors that spill off the screen, and correct the shape for angled projectors. Applies to the audience window and Present here.

Left

Right

Top

Bottom

Keystone up/down

Keystone left/right

Rotate

Show alignment grid on the output

Recording

Quality

Frame rate

Include the audio

Records exactly what the audience sees, as a WebM video. Recording adds load, so test it on your laptop first.

Rendering

Resolution

Audio source

Input device

Output device

Volume70%

Reactivity

Beat response

Input gain

Auto level

Beat response scales how hard presets kick on bass, mids and treble. Input gain sizes waveforms; Auto level evens out quiet microphones and loud tracks.

Text layers

Edit text

Show on screen

Text

Live fields: {song} {next} {set} {bpm} {time} {clock} {countdown} {elapsed} {songtime} {remaining} {preset}

Font

Size

Bold Italic CAPS

Fill Outline Glow

Outline

Glow

Position

Nudge across

Nudge down

Animation

Amount / speed

Blend

Show on song change

More text options

Letter spacing

Line height

Opacity

Fade in/out

Edge margin

Box opacity

Box color Box Over blackout

Countdown & clock

Count down for

Or until

5:00

Put {countdown} in a text layer to show it. Also available: {clock} with seconds, {elapsed} set time, {songtime} and {remaining} for the current song.

Image layers

PNG with a transparent background works best for logos. JPG, SVG, animated GIF, WebP and MP4 or WebM video also work. Drag rows to reorder.

Name

Animation

Amount / speed

Pulse with bass works on top of any animation. Drift and Scroll ignore the position setting.

GIF timing

GIF speed

Show on screen

Size

Position

Nudge across

Nudge down

Pulse with bass

Opacity

Glow

Glow color

Blend

Edge margin

Color overlay

Style

Color Second color Strength

Speed

Fade in/out

Stay visible over blackout

Now showing

–

Mood

Thumbnails

Folders

New folder

Click a preset to show it. Tick the box (or Ctrl/⌘-click, Shift-click) to select several, then move them or drag them onto a folder. Drag a folder onto another to nest it. Picking a folder also limits auto-change to it when the playlist uses all presets.

Keyboard & MIDI

Click a key box, then press the key you want. Each action can have two keys. With MIDI on, click Learn, then press a pad or move a knob.

MIDI controllers

MIDI is off. It works in Chrome and Edge when you open the downloaded file.

Knobs and faders

Back up & restore

One file with all your settings, setlists, cues, looks, text and image layers, uploaded fonts and images. Use it to move VSLZRS to your gig laptop.

Restoring replaces everything in VSLZRS on this computer with the backup, then reloads. This can't be undone.

Interface size100%

Auto fits the interface to your window, so the top bar stays on one row. Picking a size fixes it there. The visuals and the audience window aren't affected. Shortcuts: Ctrl+Alt+= / Ctrl+Alt+− / Ctrl+Alt+0 (back to Auto).

Help

About

The downloaded version runs fully offline; online, each preset folder loads the first time you use it. Presets: the Milkdrop “Cream of the Crop” collection, curated and sorted by ISOSCELES and distributed by projectM (freely released by their authors; treated as public domain), plus butterchurn-presets 2.4.7 and butterchurn-presets-baron (MIT). Engine: Butterchurn 2.6.7 by Jordan Berg (MIT), a WebGL port of MilkDrop. Fonts: SIL Open Font License, via Fontsource.

Licenses & credits

–No audioNo tempo