Local playback lab

Audio Studio

Soundboard files stay in this browser session. YouTube uses the official visible embedded player.

Local sounds

Soundboard

Master volume 100

Drop audio files to build pads MP3, WAV, OGG, and browser-supported M4A · session only

No sound pads loaded.

Your board is quiet.

Add local files to create touch-friendly sound pads.

Official embed

YouTube Player

Iframe API

Enter a YouTube URL or ID. Playback never starts automatically.

Official player will appear here.

YouTube volume 100

State: No content
Loaded: None
Video ID: —
Playlist ID: —

Visible official player only. No extraction, downloads, proxying, background playback, or export integration.

Local cartridge bay

Retro Lab

EmulatorJS4.2.3 stable

Local cartridge

Choose a ROM

Drop a local ROM NES .nes · SNES .sfc or .smc

System detection

No ROM selected NES: .nes · SNES: .sfc or .smc

ROMs run only in this browser tab and are released on unload.

Signal processor

Visual Effects

Enable EffectsUses the EmulatorJS shader chain Shader preset

Clean PixelsLow cost

Nearest-neighbor presentation with no color or geometry changes.

Effects are off. The next cartridge will use clean output.

Fixed presets use one native-resolution shader pass. WebGL 1 is the compatibility baseline.

WebGL 1 baseline

The player toolbar keeps clean PNG screenshots. Visible-effect capture is unavailable in EmulatorJS 4.2.3 without an undocumented canvas API.

Input deck

Controls

D-pad: Arrow keys
A / B: Z / X
Start: Enter
Select: V
SNES X / Y: A / S
SNES L / R: Q / E

Open Controls in the emulator toolbar to remap the keyboard, assign a gamepad, or configure Player 2.

Checking Gamepad API…

Legal + private

Use only ROMs you are legally entitled to run. No games, BIOS files, save files, or copyrighted ROM data are included.

ROM bytes stay in this tab. They are not uploaded, persisted, analyzed remotely, or added to image exports.

Cartridge slot empty

Insert a local signal.

Choose a legally usable NES or SNES ROM.
Nothing leaves this browser tab.

Deterministic motion lab

Glitch Studio

Build short corrupted loops and fictional broadcasts. Images, projects, and exports stay local.

Local archive

Projects

Unsaved

Autosave after changes

Saved in IndexedDB on this device. Clearing site data removes local projects.

Six-step start

Guided Mode

1 · Image 2 · Theme 3 · Intensity 4 · Warning text

Immutable source

Source Image

Drop JPG, PNG, or WebPLocal only · 25 MB maximum

No source image loaded.

Playback rules

Timing + Safety

Duration Frame rate Deterministic seed

Loop preview Reduced-flash protection

Optional local sound

Audio Cues

Cue source Cue volume 35 Mute preview cues

Generated tones are original and locally synthesized. YouTube audio is never routed or exported. WebM export is silent.

Local render

Export

Resolution

Load an image to estimate output size.

WebM is primary. GIF and frame ZIP are deferred.

No local signal loaded.

Choose a still image to create a short deterministic loop.

00:00.000 / 00:03.000

Compact event rail

Timeline

0 / 24 markers

Arrow keys move the selected marker. Shift + Arrow moves one second.

Feed me some pixels.

Audio Studio

Soundboard

YouTube Player

Retro Lab

Cartridge monitor

Insert a local signal.

Restart with shader?

Glitch Studio

Animated Glitch Monitor

Timeline

Delete this project?

Preview monitor

Feed me some pixels.

Soundboard

YouTube Player

Cartridge monitor

Insert a local signal.

Animated Glitch Monitor

Timeline