ToolHandful
All tools
Your toolbox
30 tools
Time zone converterCompare times across cities and find overlapping work hours.Pomodoro timerA 25-minute focus timer with short and long breaks.White screenFill your screen with white or any solid color.Black screenA full-screen black display for checking light bleed.Dead pixel testFind and fix dead or stuck pixels with solid colors.FPS testMeasure your browser frame rate and refresh rate.Color blind testScreen your color vision with freshly drawn dot plates.Mic testCheck your microphone level, waveform and a recording.Camera testSee your webcam preview, real resolution and frame rate.Sound testCheck left and right speakers, stereo and frequency range.Headphone testCheck balance, bass, frequency range and polarity.CPS testMeasure your clicks per second from 1 to 100 seconds.Mouse testerTest every button, double click, scroll and polling rate.Keyboard testCheck every key, rollover and possible key chatter.Controller testerTest gamepad buttons, triggers and stick drift.Character counterCount characters, words and bytes against platform limits.Case converterSwitch text to upper, lower, title or sentence case.Morse codeTranslate text to Morse and back, with sound and light.Binary translatorTranslate UTF-8 text and convert whole numbers between bases.Fancy textTurn text into copy-and-paste Unicode styles.Spin the wheelPick a random name or option on a fair spinning wheel.Yes or no wheelSpin for Yes, No or Maybe, or play best of three.Big Five personality testReflect on five traits with 50 public-domain IPIP items.Attachment style quizReflect on closeness, reassurance and relationship patterns.Enneagram testFree nine-type personality test with wings, no email.QR code generatorMake QR codes for links, Wi-Fi and contacts. PNG or SVG, no sign-up.Random team generatorSplit a list of names into fair random teams.Barcode generatorMake Code 128, UPC, EAN and other barcodes. PNG or SVG.Base64 decode & encodeDecode or encode Base64 text and files, right in your browser.JSON formatterFormat, validate and minify JSON, with clear error messages.
Everything runs in your browser.Free tools. No sign-up.

Free online tools that work in your browser

Device tests, text tools and quick games that open instantly on a computer, tablet or phone. Nothing to install, no sign-up.

All 30 tools

Display

5 tools

Audio & Video

4 tools

Input

4 tools

Text

5 tools

Fun & Quizzes

5 tools

Developer

2 tools

Generators

3 tools

Time

2 tools

Why this site

30 free tools that open ready to use, in any modern browser.

Private by design

The microphone and camera tests run entirely in your browser. Sound and video are processed on your device and are never uploaded. The page asks for access only when you press Start, and releases the device when you press Stop or leave.

Made for quick checks

Each tool opens ready to use, with a short guide underneath that explains the results and what to try when something isn't working. They are meant for everyday checks before a call, after buying a new monitor, or when something sounds or looks wrong.