Convert text to binary and vice versa
Encrypt with letter shifting
Convert text to morse code
Generate and scan QR codes
Generate and scan barcodes
Encrypt with old phone keypad
Encrypt with keyboard layout
Encrypt with secret key + Tabula Recta
Reverse text backwards
Zigzag transposition cipher with visual pattern
Classic 5x5 grid cipher using coordinate pairs
Sandi kotak/pramuka โ letters become geometric symbols
Convert text to binary
Convert binary to text
Encrypt text
Decrypt text
Convert text to morse
Convert morse to text
Generate QR code
Scan QR code
๐ท Click to upload QR image
JPG, PNG, or WEBP accepted
Create barcode from text
Scan barcode to text
๐ก CODE128: Accepts ANY text, numbers, or symbols! (Recommended)
Convert text to keypad
Convert keypad to text
Encrypt with QWERTY
Decrypt QWERTY
Encrypt with key
Decrypt with key
View Vigenere table
Type plaintext and key to see highlighted encryption path
Zigzag encrypt
Zigzag decrypt
Writes text in a zigzag pattern across N rails, then reads each rail left-to-right.
๐ Zigzag Rail Pattern:
Use the same number of rails as encryption to recover the original text.
๐ Zigzag Rail Pattern (decrypted):
Letters to coordinates
Coordinates to letters
View 5x5 square
Each letter is replaced by its row and column number in a 5x5 grid (I and J share a cell). Output is pairs of digits separated by spaces.
Enter pairs of digits separated by spaces (e.g.: 23 15 31 31 34).
Type a letter to see its row/column position highlighted
Text to symbols
Click symbols to decode
Also known as Sandi Kotak (Pramuka). Every letter becomes a geometric symbol based on its position in two grids and an X โ only someone with the key can read it back.
Tap the symbols below in order, matching the encrypted message you received, to reveal the plain text.
Simple calculator for quick math
Generate secure random passwords
Count characters, words, and lines
Convert colors between HEX and RGB
Convert length, weight, and temperature
Test your knowledge with fun questions
Score
0Question
0/10Best
0Test your memory with matching cards
Moves
0Time
0sPairs
0/8Guess the secret number (1-100)
Attempts: 0
Click the moles as they appear!
Score
0Time Left
30sBest
0Test your reaction speed
Best Time: -- ms