All Tools

Every hardware test in one place

Browse 90 free online testing tools organised by category — keyboard, mouse, display, camera, audio, utility and gaming diagnostics.

🛠 90 tools across 7 categories
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All Tools

Keyboard

10 tools

Mouse

15 tools

Display

23 tools
Screen Tester

Detect dead, stuck, or hot pixels on screens

Monitor Refresh Rate Test

Detect if your display runs at 60Hz, 144Hz, 240Hz or higher

Monitor Color Test

Check color accuracy, gradient banding and backlight uniformity

Backlight Bleed Test

Check your LCD monitor for backlight bleed, IPS glow, and clouding

Touch Screen Test

Test for dead zones, ghost touches and multi-touch on phone or tablet

PWM Flicker Test

Check if your monitor uses PWM backlight dimming that can cause eye strain

Monitor Gamma Test

Visual gamma calibration check using stripe-blend pattern, target sRGB 2.2

Monitor Ghosting Test

Detect pixel response time issues with adjustable-speed moving box on color backgrounds

Black Level Test

Check shadow detail with 32 near-black patches, detect crushed blacks

White Level Test

Check highlight detail with 32 near-white patches, detect clipped whites

Brightness Test

11-step grayscale ladder to verify brightness, contrast, and gamma calibration

Contrast Test

Checkerboard vs 50% gray squint test for contrast and gamma calibration

PPI Calculator

Compute pixels per inch, dot pitch, aspect ratio and megapixels for any display from resolution + diagonal

Aspect Ratio Calculator

Type any two of width, height, or ratio. Auto-simplifies to lowest integer terms and renders a live preview

Screen Size Calculator

Compute diagonal, width, height and visible area from aspect ratio plus any one dimension — in inches and cm

Viewing Distance Calculator

Optimal TV/monitor viewing distance by THX (36° FoV), SMPTE (30° FoV), and the 4K/8K resolving-limit

FPS Test

Live frame rate measurement with avg/min/max/1%-low plus 60/120/144/165/240Hz detection

Screen Resolution Test

Live readout of screen resolution, native pixels, device pixel ratio, color depth, and gamut

OLED Burn-In Test

Cycle 8 solid colors, fine checkerboard, and scrolling refresher fullscreen to detect OLED burn-in

Color Range Test

Detect Full RGB (0-255) vs Limited (16-235) via near-black and near-white patch grids

Screen Uniformity Test

Fullscreen gray/black/white/RGB at any brightness to spot clouding, IPS glow, and backlight bleed

Frame Skipping Test

Detects dropped or skipped frames at your refresh rate with rAF timestamp analysis and a visual reference bar

Monitor Sharpness Test

Lagom-style 1px pixel grid, multi-size text samples, color-fringing blocks, and an RGB sub-pixel ruler to evaluate display sharpness

Camera

2 tools

Audio

10 tools

Utility

21 tools
OCR Tool

Extract text from images quickly

QR Code Reader

Scan QR codes with camera or image upload

QR Code Generator

Create custom QR codes instantly

Password Generator

Create strong, secure passwords instantly

WhatsApp Link Generator

Create clickable WhatsApp chat links

WhatsApp Brand Links

Create branded WhatsApp links and QR codes

WhatsApp Sentiment Analyzer

Analyze chat sentiment and tone

WebRTC Leak Test

Detect IP address leaks through your browser even when using a VPN, IPv4 + IPv6 + local

Accelerometer Test

Live X/Y/Z acceleration readout in m/s² with tilt ball, shake counter, and peak-g tracking

Gyroscope Test

Live alpha/beta/gamma rotation readout with 3D cube, compass ring, and calibrate-to-zero

Vibration Test

Phone haptics patterns (Vibration API) and gamepad rumble per-motor intensity in one tool

CPU Stress Test

Multi-threaded WebWorker SHA-256 busy loop to load every logical core and report ops per second

AI GPU Test

Check WebGPU, WebGL2, WebNN and browser AI readiness with a safe matrix compute benchmark

GPU Stress Test

WebGL2 Mandelbrot fragment shader benchmark that pushes any GPU and reports FPS, minimum FPS, and software-rendering fallback

Memory Test

Browser heap monitor with live performance.memory readout, allocation stressor, and safe auto-abort

RAM Latency Calculator

Convert CAS latency (CL) and memory speed (MT/s) to real nanoseconds, compare DDR4 vs DDR5 kits side by side

Bandwidth Calculator

Solve for transfer time, file size, or required speed - handles bits vs bytes math automatically

Download Time Calculator

Estimate download duration for games, movies, and backups at your connection speed with realistic overhead

RAID Calculator

Usable capacity and fault tolerance for RAID 0/1/5/6/10/50/60 with side-by-side level comparison

Online Ruler

Actual-size cm and inch ruler on screen with credit-card calibration (ISO ID-1) and DPI presets

AI Assistant

Chat with the site's AI helper — it picks the right hardware test, links you to it, and explains the result in 8 languages

Gaming

9 tools

Windows app

KeyboardTester.click is available from Microsoft Store

Install the official Windows app shortcut, or keep using the same free testing tools in your browser.

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