KeyboardTester Blog — guides, reviews and testing tips
Display How Much Backlight Bleed Is Normal? Test It and When to Return
How much backlight bleed is normal? Run a free full-screen black test, tell backlight bleed from IPS glow and clouding, and use a clear decision tree to know if you should RMA your monitor.
Mouse Mouse Sensitivity Feels Different at the Same DPI? Why and Fixes
Same DPI but different mouse feel? Diagnose real DPI variance, Windows pointer speed, raw input, eDPI, polling, mousepad friction, grip, and game sensitivity before changing your aim settings.
Published June 13, 2026
Mouse Mouse Cursor Moving by Itself? Run a Mouse Drift Test and Fix Sensor Jitter
A practical cursor-drift guide: run a live mouse drift test, separate sensor jitter from touchpad, controller, surface, USB, and security causes, then fix the problem step by step.
Published June 8, 2026
Display Is PWM Flicker Hurting Your Eyes? How to Test It on Any Monitor or Phone
Prove whether your eye strain is PWM flicker: a 60-second symptom check, a phone-camera test with exact settings, a live on-page flicker tool, and a Hz safety table for monitors and phones.
Published June 6, 2026
Keyboard What Switches Do I Have in My Keyboard? Identify Them by Sound (No Keycap Pull)
June 13, 2026What switches do I have? Identify your keyboard switches without pulling a keycap: tell linear, tactile, or clicky apart by sound and feel, confirm clicky vs non-clicky with a live FFT sound test, then verify the exact family with a stem-color chart.
Keyboard Controller Stick Drift Test Online: Check PS5, Xbox & Switch Drift Free (and How to Fix It)
June 2, 2026Test your controller for stick drift free in the browser, read the live drift magnitude, then decide: DIY fix, free warranty repair, or a Hall-effect / TMR upgrade. PS5, Xbox, and Switch covered.
Keyboard Rapid Trigger Keyboard Settings for CS2 and Valorant: Actuation, SOCD and Testing Guide
May 24, 2026A practical Rapid Trigger settings guide for CS2 and Valorant covering actuation points, reset sensitivity, SOCD and Snap Tap safety, and post-profile keyboard tests.
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Mouse Mouse Polling Rate Test: Check Mouse Hz and Fix Low Readings
June 16, 2026Run a mouse polling rate test, check mouse Hz online, and fix low 1000Hz or 8000Hz readings caused by browsers, USB, wireless, battery saver, or mouse software profiles.
Mouse Drag Click Test: Why Your CPS Is Low and How to Fix It
June 15, 2026Drag click test score low? Read the live CPS timeline, separate technique from debounce filtering, and fix cases where the mouse makes the drag sound but clicks do not register.
Mouse What Is a Good Aim Trainer Score? Average ms-per-Target, Hit % and Pixel Error
June 15, 2026What is a good aim trainer score? Average is ~450-550 ms per target, good is 300-400 ms, elite is under 250 ms. See the hit-% and pixel-error tiers, learn why it differs from reaction time, then test your own ms-per-target with the free mouse accuracy test.
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Display Blacks Look Gray on Monitor? How to Fix Washed-Out Blacks in Minutes
June 10, 2026Blacks look gray on your monitor? Prove the Full vs Limited RGB mismatch (0-255 vs 16-235) with a live color range test, then fix the GPU setting, monitor black level, HDMI handshake, and Windows HDR washout step by step.
Display Multi-Touch Test Online: How Many Fingers Can Your Screen Detect?
June 10, 2026Run a multi-touch test online to count your screen's real touch points, spot 3-finger or 5-finger failures, and save proof before repair or resale.
Display 144Hz Monitor Stuck at 60Hz? How to Fix It and Verify Your Real Refresh Rate
June 8, 2026Fix a 144Hz monitor stuck at 60Hz with the exact Windows path, a cable bandwidth table, the monitor OSD overclock, GPU driver reinstall, and the laptop MUX trap, then verify your real Hz with a live in-browser test.
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Audio Rear Speakers Playing Through the Front? Test Every Channel and Fix Swapped 5.1/7.1 Audio
June 14, 2026Rear surround speakers playing through the front? Prove which channel is wrong with a live per-channel walk-around test, then branch the fix: swapped cables, Windows and Realtek config, receiver decode, and content that is not actually 5.1.
Audio Do You React Faster to Sound or Sight? Test Both in Your Browser
June 11, 2026Do you react faster to sound or sight? Yes, sound wins by about 20-40 ms. Run 5 sound vs 5 sight trials on the same device, see the science (8-10 ms vs 20-40 ms), and avoid the Bluetooth latency trap that flips the result.
Audio Why Can't I Hear 17 kHz? Hearing Age and Mosquito Tone Test Guide
May 18, 2026A practical guide for people who cannot hear 17 kHz or the 17.4 kHz mosquito tone, covering hearing age, headphones, speakers, safety, and when to get checked.
Utilities What Is a WebRTC Leak? How to Test and Fix It (2026 Guide)
April 22, 2026A WebRTC leak exposes your real IP through the browser even with a VPN on. This guide covers how to test, how to fix leaks in Chrome, Firefox, Brave and Safari, and why a .local mDNS address is not actually a leak.
Utilities Lucky Wheel Spinner: Free Random Selection Tool for Decisions and Giveaways
March 28, 2026Spin the lucky wheel to make random selections for giveaways, decisions, games, and classroom activities. Add custom options and spin.
Utilities WhatsApp Link Generator: Create Direct Chat Links Without Saving Contacts
March 28, 2026Create WhatsApp direct chat links (wa.me) with pre-filled messages. Start conversations without saving contacts first.
Gaming Does My Phone Have a Gyroscope? Test It in 10 Seconds (No App)
June 11, 2026Does my phone have a gyroscope? Rotate your phone in a browser test, read alpha beta gamma values, and separate missing hardware from blocked permissions, PUBG/CODM gyro settings, and Pokemon GO AR issues.
Gaming Controller Vibration Not Working on PC? Test & Fix Rumble
June 11, 2026Controller vibration not working on PC? Test weak and strong rumble motors, then fix Steam Input, Xbox Accessories, DualSense audio, Bluetooth, and game settings in the right order.
Reviews Best One-Handed Gaming Keyboard 2026: Top 9 Keypads With Joysticks
May 26, 2026A researched one-handed gaming keyboard buyer guide with verified prices, official product photos, macro-key notes, joystick caveats, testing steps, and buying links.
Reviews Most Expensive Luxury Keyboards 2026: Top 7 With Prices and Buying Links
May 21, 2026A researched luxury keyboard buyer guide with current prices, official buying links, original product photos, collector notes, and post-purchase keyboard tests.
Reviews Best Gaming Mouse 2026: Practical Picks by Grip, Weight, and Game Type
May 12, 2026A researched 2026 gaming mouse buyer guide with current official US prices, product images, FPS, wireless, budget, MMO, grip, polling, and post-purchase tests.
