Custom Screen Display Monitor

Transform your Stream Deck into a powerful monitoring and automation tool. Display any screen or background window region live on buttons and dials while adding interactive controls for complete workflow automation. Note: macOS support is in development and currently untested. Please reach out if you'd like to help us test it with us.

CORE FEATURES

Live Screen Capture & Display

Display screen regions on buttons and dials with pixel-perfect precision

Capture from specific monitors or individual application windows in the background

Auto-refresh intervals (0.1-999s) or (0s) for manual updates only

ID-based window tracking survives renames and title changes

DPI-aware coordinate handling for high-resolution displays

Action Sequences - Chain multiple actions per trigger for complete workflow automation

Three independent triggers per button/dial: Press, Double Press, or Hold

Configurable timing (200-800ms) for each trigger type

Actions execute in order with proper timing delays

Automatically restore the original foreground window after a sequence completes

Queue management prevents sequences from interfering with each other

Interactive Input Actions - Four action types, combinable in sequences:

Mouse Clicks - Click or move anywhere with Left, Right, Middle, Double-click and Move

Keyboard Hotkeys - Simple keys and chords like ESC, CTRL+R, system shortcuts like WIN+TAB

Window Switching - Bring specific windows into focus instantly

Manual Refresh - Update capture region on demand without waiting for auto-refresh

COMMON USE CASES

Online auctions - Track bid timers and price changes, snipe with a single press

Timed sales - Monitor ticket drops and queue pages, jump in the moment access opens

Limited drops - Watch product launches and restocks, secure items before sellout

Job postings - Track career sites and new listings, apply within minutes of posting

Streaming stats - Keep viewer counts, chat, and donations visible without covering your screen

System resources - Monitor performance metrics with customizable viewports, catch issues early

Video calls - Dedicate one button per participant, see who's talking at a glance

Stock prices - Track multiple tickers or crypto values on individual buttons

Game stats - Watch mini-maps, health bars, and cooldowns on Stream Deck, react faster than with overlays

Development builds - Track build status, test results, and logs while coding full-screen

Server status - Watch uptime dashboards and error rates, respond to incidents instantly

Content streams - Monitor OBS previews, viewer stats, and alerts while focused on creative work

ADVANCED FEATURES

Coordinate Picker - Full-screen modal for visually selecting exact click coordinates

Toggle between Screen and Window capture modes with source dropdown

Minimap navigation and edge panning while zoomed

Coordinates resolve relative to the selected source at execution time

Interactive Region Selector - Manage all your instances together

Device preview shows all your Stream Deck buttons, click any to view or adjust its region

Draw new regions by dragging directly on the screenshot/window preview

Resize visible regions using grab handles with cursor feedback

Dropdown menus for selecting monitors and windows

Zoom 1x to 10x with optional mini-map navigation for large displays

Source filtering shows instances using the current capture source across devices

Critical: Capture failures (e.g., closed window, GPU busy) permanently killed that source until plugin restart. A failed capture left a rejected promise in the deduplication cache, blocking all future attempts for that source. Now properly cleaned up on failure.

Critical: When multiple instances shared a capture source and it failed, waiting instances would propagate the error instead of retrying with a fresh capture.

Screenshot cache memory leak: Per-source screenshot buffers were never evicted. Switching between many windows accumulated unbounded memory. Added 60-second expiry and 10-source cap.

Full screenshot request errors were logged but never sent back to the Property Inspector, leaving it hanging indefinitely when capture failed.

Missing state cleanup when actions were removed from the Stream Deck, leaking pending updates, sequence locks, and trigger queues.