Regex Tester

Test regular expressions with live matches and groups

正規表現テスター: 正規表現のマッチとグループをリアルタイムで確認

Characters & Symbols

Symbols – Browse, combine and copy special characters and symbols
Fancy Text – Unicode fonts, Zalgo, strikethrough, invisible ink and more
Emoji – Search emoji, switch styles and copy
Kaomoji – Japanese emoticons by mood, one tap to copy
Mojibake Generator – Garble text by decoding it with the wrong encoding, or repair it
Morse Code – Translate text to Morse code and back, with sound and light
Whitespace Characters – Every kind of space and invisible character, ready to copy
Lookalike Characters – Find characters that look similar to the one you type
Character Info – Code point, name and bytes of each character

Text

Character Counter – Count characters, words, lines and bytes
Find & Replace – Replace text with plain text or regular expressions, in bulk
Text Diff – Compare two texts and highlight the differences
Text Converter – Full-width/half-width, hiragana/katakana, case and romaji
Line Tools – Sort lines, remove duplicates and blank lines, trim and number
Notepad – Quick notes saved in this browser
Markdown Viewer – Write or paste Markdown and see it rendered
Dummy Text – Lorem ipsum and placeholder text in several languages

Discord

Discord Colored Text – Color and style text for Discord with ANSI code blocks
Discord Timestamp – Make <t:…> timestamps that show in each reader's time zone
Discord Formatting – Preview Discord markdown and escape special characters
Discord ID Decoder – Find out when a Discord user, server or message was created

Developer

Data Formatter – Format and convert JSON, XML, YAML and TOML
Encode / Decode – Base64, URL, HTML entities, Unicode escapes and Punycode
Hash – MD5, SHA, CRC32, bcrypt, Argon2 and more for text and files
Password Generator – Strong random passwords and passphrases
Regex Tester – Test regular expressions with live matches and groups
JWT Decoder – Decode JSON Web Tokens and check their claims
UUID Generator – UUID v4/v7, ULID and Nano ID
Timestamp Converter – Convert Unix timestamps and dates
Number Base Converter – Binary, octal, decimal, hexadecimal and any base
Cron Explainer – Explain cron expressions and list the next runs
JSON to TypeScript – Generate TypeScript types from JSON
URL Parser – Split a URL into its parts and edit query parameters
Subnet Calculator – IPv4/IPv6 CIDR ranges, masks and host counts
chmod Calculator – Unix file permissions in numeric and symbolic form

Image & Color

QR Code – Create QR codes for text, links and Wi-Fi
Color Converter – HEX, RGB, HSL and OKLCH with contrast check
Image Compressor – Compress, resize and convert images to WebP, JPEG or PNG
EXIF Remover – View and remove photo metadata such as location

Time

Clock – Analog and digital clock with sun, moon and twilight times
Fullscreen Clock – A big digital clock that fills the screen
World Clock – Current time in cities around the world
Timer – Countdown timer with sound
Alarm – Set alarms that ring in this tab
Stopwatch – Stopwatch with laps
Pomodoro Timer – Focus and break cycles

Calculate

Calculator – Calculator, percentages and bill splitting
Unit Converter – Length, weight, temperature, area, volume, speed and more
Date Calculator – Days between dates, add days, age and Japanese eras

Everyday

Roulette – Spin a wheel to pick at random
Random Picker – Dice, coin flip, random numbers and team splitting
Amidakuji – Ghost leg lottery
Counter – Tap to count, shown however you like
Metronome – Tempo, time signatures and accents
Ruler – On-screen ruler in centimeters or inches
Screen Test – Dead pixel check and display tests
Keyboard Tester – See which keys register, with key codes