Projector Test Patterns — Calibrate & Set Up Any Projector
Free, all-in-one projector test pattern suite that runs entirely in your browser. Includes focus grid, RGB/CMY colour fields, grayscale ramp and steps, geometry grid, checkerboard, crosshatch, aspect-ratio overlays, RGB convergence, sharpness burst, contrast bars and a dead-pixel sweep. Pair your phone with a QR code and use it as a wireless remote — switch patterns from your sofa while the projector image stays untouched.
How to use the projector test
Connect your laptop, HTPC or stick to the projector via HDMI / wireless display. Open this page on the projecting device.
Tap “Pair phone as remote”. Scan the QR with your phone — the phone becomes the remote so you can sit far away while testing.
Pick any pattern card or hit “Run all patterns fullscreen”. Use ←/→, swipe, or the phone remote to navigate. Esc exits.
Focus grid for sharpness, geometry grid for keystone, colour fields for white balance and uniformity, contrast bars for shadow / highlight detail.
Calibrate focus, colour, geometry and contrast — control patterns from your phone
Phone Remote
Pick a pattern
Pair your phone
Scan this QR with your phone or open the link below. Your phone becomes the projector remote.
Features
Frequently asked questions
How do I focus my projector with this tool?
Open the Focus Grid pattern in fullscreen. Adjust the focus ring until the diagonal lines and corner crosshairs are razor-sharp at the centre, then walk to each corner to verify edge sharpness. If corners are blurry, adjust focus to a compromise that minimises edge softness.
Does the phone remote work without an app?
Yes. The phone just opens a URL (encoded in the QR) and gets a touch UI — no install, no permissions, no Bluetooth pairing. Communication uses WebRTC peer-to-peer over our self-hosted PeerJS server.
Why are the colour fields just plain RGB?
Plain solid colour fields are exactly what you want for projector calibration: they expose dust, panel uniformity issues, hot spots, vignetting, and chromatic shifts that gradient or photo content would mask. Drop into any colour and walk slowly across the screen — anomalies become obvious.
What is RGB convergence and when do I need it?
On 3-panel projectors (LCD, LCoS, 3-chip DLP) the red, green and blue panels can drift slightly out of alignment, causing colour fringing on text and edges. The Convergence pattern shows fine R, G, B grids overlaid — if you see colour fringes between them, adjust the convergence menu in your projector OSD.
Can I run this offline?
Yes — the page is cached by our service worker. Once you have visited it online, fullscreen patterns will work offline (the phone-remote feature still needs internet on both ends since it uses WebRTC signalling).
We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.
