120 free tools · no sign-up · runs in your browser
Spot the BS.
Checkers, detectors, translators and tests that call out fake reviews, sketchy sources, corporate jargon and internet nonsense — free, instant, in your browser.
Detectors & Checkers
5 toolsReverse Email Lookup
See what any email address reveals — validity, provider, profile and domain info
Source Credibility Checker
Check how trustworthy a website or news source looks
Fake Review Checker
Paste product reviews and spot the signs of fakes
AI Voice Detector
Analyze an audio clip for signs it was AI-generated
Steganography Decoder
Reveal text hidden inside PNG and BMP images with LSB steganography
Writing & Tone
5 toolsPassive Voice Checker
Find passive voice and weasel words in your writing
Tone Checker
Check how your message sounds before you hit send
AI Text Cleaner
Strip em dashes, markdown, smart quotes and hidden characters from AI text
Text Simplifier
Rewrite dense text into plain, shorter sentences
Reading Level Checker
Score any text by grade level with Flesch-Kincaid and four other formulas
Translators
5 toolsCorporate Speak Translator
Translate corporate jargon into plain English — and back
Gen Z Slang Translator
Decode Gen Z slang into plain English — and back
Brainrot Translator
Translate internet brainrot into normal English — and back
Emoji Translator
Turn text into emoji, and emoji back into text
Legalese Translator
Turn contract legalese into plain English you can actually read
Tests & Fun
8 toolsLie Detector Test
A fun polygraph-style game — ask a question, touch the sensor
Narcissist Test
A self-reflection quiz on narcissistic traits — not a diagnosis
Bullshit Generator
Generate impressive-sounding corporate and new-age nonsense
Psychopath Test
A self-reflection quiz on psychopathic traits — not a diagnosis
Sociopath Test
A self-reflection quiz on antisocial traits — not a diagnosis
Dark Triad Test
Score yourself on narcissism, Machiavellianism and psychopathy
Fake Text Message Generator
Build a realistic iPhone or Android chat screenshot for memes and mockups
Truth or Dare Generator
Random truths and dares for parties, couples and friends
Privacy & Utilities
5 toolsPhoto Metadata Remover
View and strip EXIF data — location, device, date — from photos
Photo Location Finder
Find where a photo was taken from the GPS data hidden in the file
PDF Metadata Viewer & Remover
See and strip author, title, software and dates from a PDF
Invisible Character Detector
Find and remove zero-width and hidden Unicode characters in text
Tap Counter
Count anything with a tap, with stats
Click Speed Tests
9 toolsClick Speed Test
Measure your clicks per second (CPS) over 1 to 100 seconds
Spacebar Clicker
How many times can you hit the spacebar before the timer runs out?
Spacebar Counter
Count spacebar presses with no time limit
Kohi Click Test
The classic 10-second Kohi CPS test for Minecraft PvP
Jitter Click Test
Measure your jitter clicking speed in CPS
Drag Click Test
Measure your drag clicking CPS and peak burst
Right Click CPS Test
Test how fast you can right-click
Clicks Per Minute Test
How many times can you click in 60 seconds?
Manual Click Test
Click speed test with no time limit
Keyboard Tests
8 toolsKeyboard Tester
Press every key and check it registers
Keyboard Ghosting Test
Check how many keys your keyboard registers at once (NKRO)
Keyboard Double Click Test
Find chattering keys that type twice from one press
Keyboard Polling Rate Test
Measure your key repeat rate and keyboard event timing
Keyboard Counter
Count every keystroke with live keys per second
Keyboard Clicker
How fast can you mash keys? Keys per second test
Typing Speed Test
Measure your typing speed in words per minute
Keyboard Latency Test
Measure how quickly key presses reach your browser
Reaction & Aim Tests
8 toolsReaction Time Test
Measure your visual reaction time in milliseconds
F1 Reaction Test
Race the Formula 1 start lights and get your reaction time in ms
Auditory Reaction Time Test
Measure how fast you react to a sound
Input Lag Test
Time the path from a click to the pixels changing
Aim Trainer
Practise flicks, grid shot and tracking in your browser
Mouse Accuracy Test
Test how fast and accurately you hit targets
APM Test
Measure your actions per minute on a reflex grid
WASD Trainer
Train FPS movement with three WASD mini-games
Screen Tests
21 toolsDead Pixel Test
Flood your screen with solid colors to find dead, stuck and hot pixels
Dead Pixel Fixer
Flash rapid colors over a stuck pixel to try to revive it
Refresh Rate Test
Check whether your monitor really runs at 60, 144 or 240 Hz
Screen Bleeding Test
Check your screen for backlight bleed, IPS glow and clouding
Burn-in Test
Check OLED and LCD screens for burn-in and image retention
Screen Resolution Test
See device pixels, pixel ratio and scaling
What Is My Screen Size
See your screen resolution, viewport, pixel ratio and physical size
Solid Color Screens
Fill your screen with any solid color, full screen
Display Test
Full-screen monitor test patterns: colours, gradients, sharpness and geometry
Black Level Test
Check monitor black level and shadow detail
White Level Test
Check peak white and highlight detail on your monitor
Color Range Test
Spot colour banding and check gradients on your screen
Monitor Gamma Test
Check your display gamma against the 2.2 standard
Monitor Ghosting Test
See motion blur, ghosting and overshoot on your monitor
Frame Skipping Test
Check whether your monitor drops frames
Screen Uniformity Test
Check brightness uniformity, clouding and dirty screen effect
FPS Test
See how many frames per second your browser renders
Monitor Brightness Test
Set your screen brightness right for your room and your eyes
Monitor Contrast Test
Set contrast so highlights keep their detail, and see how contrast ratios are measured
Screen Center Finder
Mark the exact centre of your screen with a crosshair
Viewport Size Tester
See your live browser viewport size and CSS breakpoint
Mouse Tests
10 toolsMouse Tester
Check every mouse button and the scroll wheel
Double Click Test
Catch a mouse that double-clicks on its own
Mouse Polling Rate Test
Measure your mouse polling rate in Hz
Mouse DPI Test
Measure your mouse true DPI against what the box says
Mouse Drag Test
Catch a mouse switch that drops a held click
Mouse Drift Test
Detect sensor drift and jitter while your mouse is still
Mouse Scroll Wheel Test
Check your scroll wheel for skipping and reverse scrolling
Mouse Latency Test
Check click timing and event delivery from your mouse
Mouse Acceleration Test
Check whether pointer acceleration is on and see your cursor speed
Mouse Spin Test
Spin your mouse in circles and see your RPM
Audio Tests
17 toolsHeadphone Test
Check left and right channels, balance and polarity of your headphones
Sound Test
Play a tone on the left, right or both speakers
Mic Test
Check your microphone with a live level meter and playback
Frequency Response Test
Check how low and high your headphones or speakers really go
Audio Blind Test
Can you really hear hi-res audio? Find out with a blind ABX test
Hearing Test
Find the highest and lowest frequencies you can hear
Tone Generator
Play any frequency as a sine, square, sawtooth or triangle wave
Decibel Meter
Estimate an uncalibrated mic level. Not a legal dB reading
Surround Sound Test
Play each 5.1 or 7.1 channel and read the browser output count
Bass Test
Listen for how low a tone stays audible
Metronome
Online metronome with tap tempo and accents
Voice Recorder
Record audio in your browser and download it
Stereo Test
Listen for a phantom centre and check left-right placement
Subwoofer Test
Play tones while you set crossover, phase and level on the sub
Test Tones
Hear distortion levels and a perceptual sweep for yourself
Dynamic Range Test
Hear what bit depth, dither and noise floor really do
Room Acoustics Test
Listen for room boom, and estimate modes from sizes you type
Device & System Tests
10 toolsGamepad Tester
Test every controller button, trigger and stick, and check for drift
Touch Screen Test
See which cells on the screen received a touch
Multi-Touch Test
Count how many touch points the browser delivers at once
Webcam Test
See the frame size and frame rate the browser delivers
CPU Stress Test
Load browser threads and chart JavaScript throughput
GPU Stress Test
See how fast a WebGL scene runs in your browser
Accelerometer Test
Check your phone motion sensor with live X, Y and Z readings
Gyroscope Test
Check your phone gyroscope with live rotation readings
Vibration Test
Ask the browser to play vibration patterns
RAM Test
Time how fast the browser copies memory, in GB/s
Hardware Calculators
9 toolsRetina Display Calculator
Get PPI and pixels per degree from size and distance
RAM Latency Calculator
Turn RAM speed and CAS latency into nanoseconds
PPI Calculator
Pixel density, dot pitch and screen size from resolution and diagonal
Aspect Ratio Calculator
Find the aspect ratio of any size, or resize while keeping it
eDPI Calculator
Work out effective DPI and cm/360 inside one game
Sensitivity Converter
Convert mouse sensitivity between games
Viewing Distance Calculator
Work out seating distance from screen size and a viewing angle
FOV Calculator
Work out horizontal, vertical and diagonal angles from your seat
Mouse DPI Calculator
Apply a Windows pointer-speed notch to a DPI you type
Everything runs in your browser
Photos, audio and text are processed on your own device. Nothing gets uploaded to a server.
No account, no hoops
Open a tool and use it. No sign-up walls, no email verification, no “free trial”.
Free — actually free
Every tool is free to use, with no usage limits and no premium tier hiding the good parts.
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