Tools that run 100% in your browser

🎮

Gamepad Tester

Test every button, stick and trigger on your PS5, Xbox or Switch controller. Drift verdicts, circularity, vibration and a copyable health report.

🎯

Stick Drift Test

Put your controller down and get a measured drift verdict in 6 seconds — plus deadzone advice and fix guides for every console.

⌨️

Keyboard Tester

Press every key and watch it light up. Catches chattering switches, measures rollover, and tracks which keys you've verified.

🖥️

Dead Pixel Test

Cycle full-screen colors to spot dead or stuck pixels on any monitor, phone or TV — plus a stuck-pixel fixer.

🎙️

Mic Test

Live level meter and waveform to confirm your microphone works before a call or stream. Audio never leaves your device.

📷

Webcam Test

Live camera preview with resolution and frame-rate readout, device picker and a snapshot. Video never leaves your device.

👁️

Online Eye Test

A calibrated visual-acuity check: size a bank card on screen for true pixels-per-mm, set your distance, then read tumbling-E charts for an approximate 20/20 result.

🌈

Color Blindness Test

Read the number hidden in each dot plate to screen for red-green color vision deficiency. Self-generated Ishihara-style plates, scored instantly.

👓

Pupillary Distance Meter

Measure your PD for ordering glasses: take a webcam photo with a bank card for scale, mark your pupils, and read your pupillary distance in millimeters.

📏

Actual Size Ruler

A real, calibrated on-screen ruler. Match a bank card once to set your screen's true size, then measure accurate centimeters and inches — and drag to measure any length.

💍

Ring Size Measurer

Find your ring size with no printing: calibrate with a bank card, lay a ring you own over the circle, and get US, UK, EU and Japanese sizes instantly.

🃏

Solitaire

Classic Klondike Solitaire — clean and fast, no ad wall. Draw 1 or 3, unlimited undo, auto-complete, timer. Plays great on mobile.

🔢

2048

Slide and merge tiles with arrows, WASD or swipe to reach 2048 and beyond. High score saved, no ads blocking the game.

💣

Minesweeper

The classic — Beginner to Expert boards, first click always safe, flags and chording, timer. Long-press to flag on mobile.

🐍

Snake Game

Eat, grow, and don't hit the walls or yourself. Arrows, WASD or swipe, rising speed, best score saved. Free, no ad wall.

🟢

Reaction Time Test

Wait for green, then click as fast as you can. Millisecond timing, a 5-try average, and how you compare to the human norm.

🖱️

CPS Test

Click as fast as you can and measure your clicks per second. Pick 1–60 seconds, with a live counter and saved best score.

🎯

Aim Trainer

Click the targets fast — measure targets/min, accuracy and reaction. Adjustable difficulty, saved best, shareable score.

⌨️

Typing Speed Test

Measure your words per minute and accuracy live, with 15/30/60-second modes and a saved best score.

🃏

Blackjack Strategy Trainer

Play blackjack and get graded on every move versus the optimal strategy card. Learn hit/stand/double/split with a built-in chart.

📋

Blackjack Strategy Chart

The full colour-coded basic strategy chart — hit, stand, double, split for every hand. Free to print or save as PDF.

☎️

Retro Payphone Simulator

Lift the handset, drop a coin and dial — real Touch-Tone beeps, dial tone and coin sounds. Oddly satisfying.

📞

Rotary Phone Simulator

Spin the dial and hear the pulse-dial clicks tick back as it springs home. Peak retro ASMR.

💵

Cash Register Simulator

Punch in an amount, hit Total — bell ding, coin jingle and the cash drawer ka-chunks open.

🖋️

Typewriter Simulator

Type and hear authentic typebar strikes, the margin bell and the carriage-return ding.

📺

CRT TV Simulator

Static snow, color bars, the degauss hum and the white-dot power-off collapse.

🪀

Newton's Cradle

Pull a ball and let the clicks tick back and forth — the endlessly satisfying desk toy.

🎶

Record Player Simulator

Drop the needle and watch the vinyl spin while you stream music by Kizuri from Spotify.

🪨

Zen Sand Garden

Rake calming patterns in the sand around the stones, with ambient music by Silent Nebula.

🔥

Crackling Fireplace

A cozy fire with living flames and popping embers — the crackle is synthesized live, so it never loops.

🐟

Virtual Aquarium

Colorful fish drift among swaying plants and bubbles. Click the water to feed them and watch them chase.

🌋

Lava Lamp

Gooey blobs rise, split and merge in warm glowing glass. Four color themes. Mesmerizing focus background.

🌬️

Breathwork

Follow the calming orb through box breathing, 4-7-8 and coherent breathing, with soft tones and a session timer.

🪙

Coin Flip

Flip a coin — fair, random heads or tails with streaks, sound and a fun 6 / 7 mode for kids.

🎱

Magic 8-Ball

Ask a yes-or-no question, shake the ball, and get one of the 20 classic answers.

🥠

Fortune Cookie

Crack open a virtual cookie for a fortune and your lucky numbers.

🃏

Tarot Reading

Draw a 3-card Past, Present & Future spread from the 22 Major Arcana, with meanings.

🔮

Crystal Ball

Ask the oracle, gaze into the swirling mists, and receive a mystic message.

✨

Daily Horoscope

Pick your zodiac sign for today's reading, plus your lucky number, color and mood.

⏱️

Time Card Calculator

Total weekly hours with breaks and overtime, convert to payroll decimals, and print a clean timesheet. Auto-saves on your device.

📦

Amazon ACoS Calculator

Break-even ACoS, target ACoS and max bid — with modes for FBA sellers, KDP authors and Merch on Demand.

📊

Amazon Ads Optimizer

Upload your search term report for negative keywords, bid changes and harvest picks — FBA, KDP and Merch.

🚢

Import Duty Calculator

Customs value, duty owed, total landed cost and per-unit cost — for importers and FBA sellers. CIF or FOB basis.

📐

Aspect Ratio Calculator

Lock a ratio like 16:9 and solve the missing width or height — resize anything proportionally with no stretching.

🎛️

Resistor Color Code Calculator

Pick the band colors and read resistance, tolerance and temp coefficient for 4, 5 and 6-band resistors, with a live diagram.

％

Percentage Calculator

Three in one: a percentage of a number, what percent one number is of another, and the percentage change between two numbers.

🩺

BMI Calculator

Body mass index in metric or imperial, with your category and healthy weight range.

🎂

Age Calculator

Your exact age in years, months and days, plus a countdown to your next birthday.

🏦

Loan Calculator

Monthly payment, total interest and total cost for personal, auto or home loans.

📈

Compound Interest

See how savings grow with compounding and monthly contributions over time.

🧾

Tip Calculator

Tip amount, total and per-person split for any bill.

🏷

Discount Calculator

Final sale price and how much you save on any percent-off deal.

🧮

Sales Tax Calculator

Add tax to a price or back it out of a tax-included total.

🎓

GPA Calculator

Weighted grade point average on the 4.0 scale from your courses.

📅

Days Between Dates

Days, weeks and weekdays between two dates, with a y/m/d breakdown.

⏳

Time Duration Calculator

Hours and minutes between two times, with overnight and break support.

📄

PDF Merge & Split

Combine PDFs into one file and extract page ranges — entirely in your browser, so your documents are never uploaded. No watermark, no limits.

🗜️

Image Compressor

Compress images to an exact target size (say, 100 KB) or a chosen quality, convert JPG/WebP/PNG and resize — photos never uploaded.

📷

EXIF Viewer & Remover

See the camera, dates and GPS location hidden in your photos — and strip it losslessly, with the pixels untouched. Nothing uploaded.

🛂

Passport Photo Maker

Crop to official passport & visa sizes with head-position guides, then download a 300 DPI photo or a printable 4×6 sheet. No watermark.

🔳

QR Code Generator

QR codes for URLs, Wi-Fi and email — crisp SVG or high-res PNG, custom colors, no watermark, and static codes that never expire.

🖼️

HEIC to JPG Converter

Convert iPhone HEIC/HEIF photos to JPG or PNG right in your browser — nothing is uploaded, so your photos stay private. Batch convert instantly.

▐

Barcode & ISBN Generator

Create EAN-13, UPC-A, ISBN-13 (with EAN-5 price add-on) and Code 128 barcodes. Download clean SVG or high-res PNG — no watermark, no signup.

👻

Invisible Character Remover

Detect and strip zero-width spaces, BOMs, bidi marks and AI-watermark tag characters. See exactly what's hidden, then copy clean text.

💬

Subtitle Shifter

Fix out-of-sync captions: shift every timestamp in an .srt or .vtt by a few seconds, and convert between SRT and WebVTT. Files never leave your device.

🎵

Instrument Tuner

Tune by ear with your mic: note, exact frequency and cents sharp/flat, with guitar, bass, ukulele and violin presets plus chromatic mode.

🛡️

Content Credentials Checker

Drop an image to read its C2PA Content Credentials — see if it's flagged AI-generated and what tool made it. Nothing is uploaded.

📆

Add to Calendar Generator

Make a downloadable .ics file plus Google Calendar and Outlook links for any event.

🌗

Color Contrast Checker

WCAG contrast ratio between two colors with instant AA / AAA pass-fail and a live preview.

📱

Social Safe Zone Previewer

See where TikTok, Reels and Shorts UI covers your vertical video so captions stay visible.

🧁

Grams to Cups Converter

Real density data for 60+ baking ingredients, with baker-friendly fractions, butter sticks and oven temperatures.

🎬

Discord Video Compressor

Compress any video under Discord's 10 MB limit right on your device — no upload, no queue, no watermark.

🕗

Discord Timestamp Generator

Make a time that shows in everyone's local zone. All 7 formats with live previews and one-click copy.

✨

Fancy Text Generator

Turn plain text into 𝓬𝓾𝓻𝓼𝓲𝓿𝓮, gothic, bubble and vaporwave styles to copy into Instagram, TikTok and Discord bios.

🔤

Case Converter

UPPERCASE, lowercase, Title Case, camelCase, snake_case and more — every style at once, with one-click copy.

🎨

Color Picker

Drop an image and click to grab any color as HEX, RGB, HSL or HSV, with palette extraction and a screen eyedropper.

🌈

Color Palette Generator

Harmonious 5-color schemes — analogous, complementary, triadic, monochrome. Lock colors, press space, copy hex.

🔢

Word Counter

Words, characters, sentences and paragraphs with reading time, speaking time and keyword density — live.

📏

Unit Converter

Length, weight, temperature, volume, area, speed, time and data — metric and imperial, both ways.

🔑

Password Generator

Strong, truly random passwords with a strength meter. Generated in your browser — never sent anywhere.

🔐

Hash Generator

MD5, SHA-1, SHA-256, SHA-384 and SHA-512 of any text, live — all computed on your device.

⏲️

Stopwatch & Timer

A precise stopwatch with laps and a countdown timer with an alarm. Works offline once loaded.

{ }

JSON Formatter

Beautify, minify and validate JSON with exact error line numbers. Safe for API keys — parsed on your device.

🔣

Base64 Encode/Decode

Convert text to and from Base64 with full Unicode and URL-safe support — emoji and accents included.

🔗

URL Encoder

Percent-encode and decode URLs and query parameters, whole-URL or single-component, with full Unicode.

🆔

UUID Generator

Cryptographically strong v4 UUIDs (GUIDs) — generate one or a thousand at once, with copy-all.

📝

Lorem Ipsum Generator

Placeholder text by paragraphs, sentences or words for mockups and templates — one-click copy.

🔟

Number Base Converter

Binary, octal, decimal and hex live — plus any base 2–36, with exact big-number precision.

◊

Regex Tester

Test regular expressions live with match highlighting, capture groups and every JavaScript flag.

🌅

CSS Gradient Generator

Build linear and radial gradients with custom stops and angle, live preview, and copy the CSS.

⏰

Countdown Timer

Live countdown to any date in days, hours, minutes and seconds.

📄

Markdown Previewer

Type Markdown and see live rendered HTML side by side.

🔍

Text Diff Checker

Compare two texts line by line and highlight what changed.

📡

Morse Code Translator

Text to Morse and back, with audio playback.

💾

Text to Binary

Convert text to 8-bit binary and back, UTF-8 safe.

✏

Slug Generator

Turn any title into a clean, lowercase URL slug.

🖍

HEX to RGB

Convert between HEX, RGB and HSL colours with a live swatch.

🔲

Box Shadow Generator

Build CSS box-shadows visually and copy the code.

🔀

Random Number Generator

Pick random numbers in any range, with a no-repeats option.

🎲

Dice Roller

Roll d4 to d100 with totals and a roll history.