Tap Code Encoder/Decoder – Online POW Communication Tool
Convert text to tap code (5x5 grid) and back. Learn the historical POW communication method.
UD5 Toolkit
Convert text to tap code (5x5 grid) and back. Learn the historical POW communication method.
Paste an SVG and get an optimized, URL‑encoded data URI for use in CSS backgrounds. Reduces file size and escapes characters.
Optimize an SVG and convert it into a URL‑encoded data URI ready for CSS backgrounds. Strip unnecessary attributes. All local.
Encode any text, including emojis and foreign scripts, into a Base64 string. Perfect for data URLs. Local.
Paste an SVG and get a ready‑to‑use data URI for CSS backgrounds or img tags. Optimized with URL encoding. All local.
Encode or decode text using Base32 scheme. Ideal for legacy systems and data obfuscation. Works completely offline in your browser for maximum security.
Apply a classic Caesar shift cipher with any key. Encrypt or decrypt text instantly. Brute force option included.
Encode text or numbers into base62 (0‑9a‑zA‑Z) and decode back. Ideal for shortening integer IDs and URLs. Local.
Convert text and files to Base64 or decode Base64 back to original content. Processed locally with no server upload, ensuring complete data security.
Convert any text string to a sequence of hexadecimal pairs. Useful for programming and data representation. All conversion happens locally in your browser.
Encode letters to their position in the alphabet (A=1, B=2...) and decode back. A classic puzzle tool. No data leaves your device.
Easily apply ROT13 cipher to obfuscate or reveal text. A classic letter substitution cipher that works bidirectionally. Purely client-side processing.
Encode special characters to HTML entities or decode them back to normal text. Perfect for web developers to sanitize or reverse HTML escaping. All processing is client-side.
Encode special characters into URL-safe format or decode percent-encoded strings back to plain text. Fast and reliable, runs locally in your browser.
Translate text to Morse code and decode Morse signals back to text. Sound playback supported. Learn and experiment with Morse code directly in browser.
Encrypt text into the classic pigpen symbols and decode them back. Fun for treasure hunts and mystery games.
Encrypt and decrypt messages using the classic Caesar cipher with configurable shift key. Fun for puzzles and basic cryptography lessons. Entirely browser-based.