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No sign-up · Runs in your browser
Don't read about it. Test it right now.
Free browser tools to test monitors, keyboards, mice, and touchscreens — live refresh rate, dead pixels, solid colors, and input diagnostics. No downloads, no account.
- 49
- tools
- 4
- categories
- 100%
- free
New monitor? Run this setup checklist
Six browser tests in order during your return window — resolution, Hz, pixels, bleed, motion, and color.
- Step 1Resolution & scalingConfirm native resolution and device pixel ratio at 100% OS scaling before chasing ghosting or color issues.
- Step 2Refresh rateVerify the panel actually runs at its advertised Hz — many 144Hz monitors ship stuck at 60Hz until you fix the cable and OS setting.
- Step 3Dead & stuck pixelsFullscreen white, black, and RGB cycles make bright dead subpixels and dark stuck pixels obvious in a dim room.
- Step 4Uniformity & bleedGrey fields expose vignette and tint; pure black in a dark room separates IPS glow from fixed edge bleed.
- Step 5Ghosting & bandingMoving patterns reveal VA smear or slow overdrive; gradient ramps catch 8-bit banding before you keep the panel.
- Step 6Color & HDRCheck grey ramps and sRGB mode, then stress peak brightness if you bought an HDR display — banding shows up on cheap panels.
- GuideFull setup guide Expanded notes, return-window tips, and FAQs for every step in order.
- HubAll display tests Every display instrument with its own panel, fullscreen mode, and shortcuts.
Screen Testing Tools
Live Hz readouts, motion blocks, HDR stress, touch grids, and pixel hunts — the same instrument UI as our flagship tools.
Refresh Rate Test
Live Hz gauge, frame-time chart, and motion blocks.
Dead Pixel Test
Fullscreen color cycle to find stuck and dead pixels.
Ghosting Test
Moving blocks to check response time and motion trails.
HDR Test
Peak brightness patches and HDR capability readout.
Touch Screen Test
10×10 grid to find dead zones on phones and tablets.
Screen Tearing Test
Spot V-Sync gaps and frame sync issues.
Backlight Bleed Test
Pure black dark-room check for IPS glow and edge leak.
Uniformity Test
Grey fields for vignette, tint, and uneven backlight.
Burn-in Test
OLED retention patterns — bars, checkerboard, sweeps.
Solid Color Screens
Fullscreen solids with adjustable brightness for bleed, tint, and calibration checks
Jump into another tool
Every TestMyGears tool runs locally in your browser.
Display tests
- Display test center Hub for dead pixel, uniformity, gradient, ghosting, HDR, and more customizable tests.
- Dead pixel test Custom color sequence and cycle speed for stuck and dead pixels.
- Uniformity test Grey fields, grid overlay, and crosshair for vignette and tint.
- Backlight bleed test Bleed preset — pure black with grid overlay for IPS glow.
- Refresh rate test Real-time Hz detection and motion block verification.
- Resolution checker Screen size, DPR, color depth, and viewport readout.
- Screen size calculator PPI, physical dimensions, and area from diagonal + resolution.
- Aspect ratio calculator Simplify ratios, resolve missing dimensions, and compare formats.
- Burn-in test OLED retention patterns — color bars and checkerboard.
- Ghosting test Free monitor ghosting test online — screen ghosting, motion blur, and inverse ghosting.
- HDR test Peak brightness reference and dynamic range check.
- Color blindness test Free screen color separation check — hue plates and red-green / blue-yellow pairs for display QA.
- RGB channel test Pure primaries, per-channel ramps, and RGB bars for subpixel isolation.
- Flicker test Free monitor & PWM flicker test online — screen strobe check for OLED and LCD.
- Crosshair test 1px dot, geometry, and alignment cross for monitor center QA.
- Sharpness test Pixel grids, line patterns, and multi-font text for clarity checks.
- Tearing test Fast-scrolling stripes to detect VSync-off screen tearing.
- Color gamut test sRGB vs Display P3 patches for wide-gamut verification.
- Blooming test Local-dimming halos on bright highlights against pure black.
- Viewing angle test Off-axis color and contrast checks with guided position prompts.
- Color calibration test White balance, 24-patch color card, and skin tone references for monitor color accuracy.
- Gradient & banding test Adjustable RGB and grey ramps with bit-depth simulation.
Screen colors
Input devices
- Keyboard test Virtual QWERTY layout with key code readout.
- 60% keyboard test Compact 61-key ANSI layout tester for 60% mechanical boards.
- 75% keyboard test 84-key compact layout with F-row and arrows — no numpad.
- TKL keyboard test 87-key tenkeyless layout with nav cluster and arrows.
- Full-size keyboard test Complete 104-key ANSI layout including numpad.
- Typing test Free keyboard typing speed test online — WPM and accuracy with 1-, 3-, or 5-minute timers and easy, medium, or hard practice.
- Keyboard CPS test Key presses per second — spacebar speed and tap benchmark in 1s–30s windows.
- Keyboard polling rate test Live key-event Hz estimate, peak readout, and scrolling polling graph.
- Key chatter test Detect double typing and switch bounce with adjustable interval threshold.
- Mac keyboard test Command, Option, Control, and fn on a virtual Apple keyboard layout.
- Speaker test Left/right stereo check, frequency sweep, sub-bass rattle, and phase polarity — free online.
- Surround sound test Free 5.1 / 7.1 surround channel check — click each speaker or run a sequence.
- Controller test Gamepad visualizer — buttons, sticks, triggers, drift, and vibration.
- Stick drift Analog stick drift tester — rest check, jitter, deviation, and range trail.
- Mouse test Double click test, polling rate (Hz), CPS, buttons, wheel, and pointer tracking.
- DPI test Ruler-based DPI calibration — real vs rated deviation.
- Mouse scroll test Scroll wheel direction, tick delta, up/down counts, and event log.
- Mouse polling rate test Live Hz estimate, peak readout, and scrolling polling graph.
- CPS test Clicks per second benchmark with 1s, 5s, and 10s windows.
- Mouse latency test Per-click delay log with min, max, and average in milliseconds.
- Touch screen test Multi-touch grid, dead zones, and precision.
Gaming calculators
Free online display and input testing
TestMyGears is a hub of browser-based diagnostics for monitors, laptops, phones, TVs, keyboards, mice, and touchscreens. Run dead pixel checks, verify refresh rate and resolution, download solid-color PNGs, and test input devices — all without installing software.
Display diagnostics
Dead pixels, refresh rate, uniformity, ghosting, HDR, and calibration — live readouts in your browser.
Keyboard, mouse & touch
Virtual keyboard, button checks, scroll wheel tests, CPS benchmarks, and multi-touch grids.
Solid color screens
White, black, and RGB fullscreen fills plus custom PNG downloads up to 8K for pixel hunts and cleaning.
What you can test
Pick a workflow below — each opens a free tool with no sign-up or install.
New monitor QA
Run dead pixel, uniformity, refresh rate, and ghosting checks before the return window closes.
Stuck pixel hunting
Use white, black, and RGB fullscreen cycles to spot bright or dark dots on LCD, OLED, and phone panels.
Input device checks
Verify keyboard keys, mouse buttons, scroll wheel, and touch responsiveness without installing software.
Solid color backgrounds
Download PNG wallpapers at up to 8K or go fullscreen for cleaning, photography, or calibration workflows.
Frequently asked questions
Do I need to download anything?
No. Every TestMyGears tool runs in your browser — monitors, laptops, phones, and tablets. Open a tool, tap or click for fullscreen, and start testing.
Which tool should I run first on a new monitor?
Start with the refresh rate test to confirm your Hz setting, then run the dead pixel test on white and black. Finish with uniformity or backlight bleed if you want a full QA pass.
Are TestMyGears tools free?
Yes. All display, color screen, keyboard, mouse, and touch tools are free with no account or install required.
Does TestMyGears upload my screen to a server?
No. Fullscreen colors, PNG exports, and test readouts stay in your browser. We never receive the images you view or download.
Device Testing Guides
Laptop, phone, TV, and panel workflows · Return tips · Buying checklists
Laptop Screen Test
8-step verification · Panel comparison · Return standards · Parameter glossary
Mobile Screen Test
OLED burn-in check · Touch test · Panel comparison · Used phone tips
TV Screen Test
Mini LED halo · Backlight bleed · OLED burn-in · HDR evaluation
Monitor Screen Test
IPS / VA / OLED · PPI matching · Color calibration · G-Sync / FreeSync
OLED Screen Test
Burn-in detection · PWM flicker · ABL check · WOLED vs QD-OLED
LCD Screen Test
IPS bleed · VA ghosting · Mini LED halo · LCD vs OLED
