This is a growing collection of simple, practical utilities for developers, photographers, and anyone who spends time working with data. Every tool on this list runs entirely in your browser. Nothing is uploaded, nothing is tracked, and you will never be asked to create an account or start a free trial to copy a result.
Tools in this collection:
Whitespace Remover — Paste in messy text and strip it clean. Remove leading spaces, trailing spaces, extra spaces, blank lines, or flatten everything into a single readable format. The Clean & Readable mode is the one you’ll use most — it trims every line and adds consistent spacing so your text pastes nicely anywhere.
JSON Formatter — Paste raw or minified JSON and get it back pretty-printed with full syntax highlighting. Minify mode squashes it to a single line. Validate mode tells you instantly whether your JSON is valid and shows the exact error if it isn’t.
EXIF Reader — Drop in any photo and read all the data your camera embedded at the moment of capture. Camera, lens, shutter speed, aperture, ISO, focal length, date and time, GPS coordinates, and reverse-geocoded location. Your photo never leaves your computer.
UUID Generator — Generate one UUID or a hundred in a single click. Version 4 (random) or Version 1 (time-based), uppercase or lowercase, with or without hyphens. Uses cryptographically secure randomness built into your browser.
Hash Calculator & Validator — Compute MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hashes from text or any file. Use the Validate tab to compare a computed hash against an expected checksum in one step — perfect for verifying downloads. Everything runs locally, nothing is ever uploaded.
BaseShift Converter — Convert numbers between ten different bases — Decimal, Hexadecimal, Binary, Octal, Duodecimal, Vigesimal, Base32, Base36, Sexagesimal, and Roman Numeral — all at once from a single input. Encode and decode strings as Base64, URI, HTML entities, hex bytes, or char codes. Encrypt and decrypt with AES, DES, or Triple DES using a passphrase. Generate MD5 and SHA-256 hashes. Translate text to Morse code or NATO phonetic alphabet. Everything runs in your browser — nothing is sent anywhere.
List → CSV Converter — Paste in any list and convert it to CSV instantly. One item per line, space-separated numbers, tab-delimited, pipe-separated — pick your input format, pick your output separator, and the result updates as you type. Trim whitespace, remove duplicates, sort alphabetically, control how many items appear per row, and prefix every row with a command or argument for terminal use. Download as a .csv file or copy straight to your clipboard.
QR Code Generator — Generate a QR code for any URL, block of text, WiFi credentials, email address, SMS message, or contact card. Adjust the size, error correction level, foreground and background colors, and quiet zone margin. Download as PNG or SVG. Everything generates locally in your browser — no server, no account, no watermark.
Julian Date Converter — Convert between Julian Date (JD), Modified Julian Date (MJD), and standard calendar dates. Used in astronomy, aerospace, satellite tracking, and anywhere a continuous day count matters more than a calendar. Enter a date and time to get the JD and MJD, or paste any JD or MJD value to get the calendar date back. Also shows Unix timestamp, Day of Year, Day of Week, Truncated JD, J2000.0 offset, and Besselian Year. Eight reference epochs — J2000.0, Unix Epoch, GPS Epoch, and more — are one click away.
Team Clock — Four tools in one for anyone working across timezones. The World Clock tab shows live times for cities around the globe, updating every second, with a color indicator showing whether each location is in business hours, evening, or asleep. The Team Time tab solves the specific problem of coordinating across timezones — add your team’s cities, pick a meeting time in your local timezone, and instantly see what that time means for everyone else. It also finds the best overlap window across all your locations, generates a ready-to-copy meeting announcement, and is honest when there is no good overlap. The Days Between tab calculates the exact span between two dates in years, months, weeks, days, business days, hours, minutes, and seconds. The Unix Timestamp tab converts between Unix timestamps and human-readable dates in both directions, handling seconds and milliseconds automatically.
Astro Clock — Real-time astronomical data for your location. The Sun tab shows today’s sunrise, solar noon, sunset, day length, golden hour and blue hour windows, civil, nautical, and astronomical twilight times, and the sun’s current altitude and azimuth — with a live progress bar tracking the sun across the sky. The Moon tab shows the current lunar phase, illumination percentage, age in days, altitude, azimuth, and the dates of the next new moon and full moon. The Sidereal tab displays Local Sidereal Time to the second — the right ascension currently crossing your meridian — alongside Greenwich Sidereal Time, UTC, and live Julian Date. The Milky Way tab shows the galactic plane arc and core position plotted on a live sky chart for your location, with visibility rating, moon interference warning, core rise and transit times, and a season bar showing the best months to shoot. A date and time scrubber lets you plan any night of the year. All data updates in real time. Toggle between 24-hour and 12-hour display at any time.
Dev Clock – Four time utilities in one. The Cron tab explains any cron expression in plain English, breaks out each field, and shows the next N scheduled run times in both UTC and your local time — with shortcuts for the most common patterns. The ISO 8601 tab parses any date string and shows all its components: year, month, day, day of year, ISO week number, time components, and equivalent representations including Unix timestamp, Julian Date, and RFC 2822. The Duration tab converts any duration — seconds, HH:MM:SS, or human-readable like 1h 30m — into every other unit, and lets you add or subtract two durations. The Countdown tab counts down to any target date and time with a live display updating every second.