UD5 Toolkit
Interactive Laundry Symbol Decoder – Click to Learn Meaning
Click on a laundry symbol (wash tub, triangle, iron, circle) and see a plain‑English explanation. No more ruined clothes from guessing care labels.
Tag: Decoder - Decode Encoded Data
30+ toolsCertificate Decoder (PEM) – Online View X.509 Details
Paste a PEM-encoded certificate to decode subject, issuer, validity, and fingerprints. Runs locally.
Base64 to UTF‑8 Converter - Online Decode Text
Decode a Base64 encoded string that contains UTF‑8 text (emojis, international characters). See the raw output. Local.
Tap Code Encoder/Decoder – Online POW Communication Tool
Convert text to tap code (5x5 grid) and back. Learn the historical POW communication method.
WebAuthn Response Decoder - Online Unpack Attestation
Paste a raw WebAuthn attestation response (CBOR) and decode its fields: format, authenticator data, and extensions. Debug passkeys locally.
Laundry Symbol Decoder – Online Wash, Dry, Iron Guide
Click to build a laundry symbol and learn its meaning, or look up common symbols. Never ruin clothes again.
SSL Certificate Decoder - Online X.509 Viewer
Paste a PEM/DER certificate and decode all fields: issuer, subject, validity, SANs, and fingerprint. Pure JavaScript parser.
WASM Audio Decoder - Online Play FLAC/Opus Locally
Decode FLAC, Opus, or OGG audio files in the browser using compiled WASM libraries. Play instantly without server uploads. Keep audio private.
Hex to Text Converter - Online Hexadecimal Decoder
Decode hexadecimal values back to human-readable text. Ideal for debugging and data recovery. Works fully offline in your browser, keeping your data secure.
Base32 Encoder & Decoder - Online Base32 Converter
Encode or decode text using Base32 scheme. Ideal for legacy systems and data obfuscation. Works completely offline in your browser for maximum security.
Base64 Encoder & Decoder - Online Base64 Converter
Convert text and files to Base64 or decode Base64 back to original content. Processed locally with no server upload, ensuring complete data security.
Morse Code to Text Translator - Online Decoder
Paste Morse code (dots and dashes) and translate it back to plain English text. Supports standard timing. Local.
ASCII Binary to Text - Online Decode Bits
Paste a string of 0s and 1s and decode it back into ASCII text. Handles space‑separated blocks. Local.
ROT13 Encoder & Decoder - Online Caesar Cipher ROT13
Easily apply ROT13 cipher to obfuscate or reveal text. A classic letter substitution cipher that works bidirectionally. Purely client-side processing.
HTML Entity Encoder & Decoder - Online Escape Tool
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.
Shift Cipher Encoder - Online Caesar & ROT0‑25
Apply a classic Caesar shift cipher with any key. Encrypt or decrypt text instantly. Brute force option included.
Base62 Encoder & Decoder - Online Shorten IDs
Encode text or numbers into base62 (0‑9a‑zA‑Z) and decode back. Ideal for shortening integer IDs and URLs. Local.
Text to Morse Code Decoder - Online CW Translation Tool
Translate text to Morse code with audio playback. Adjust speed and tone. An educational tool for amateur radio enthusiasts. Works offline.
JWT Debugger - Online JSON Web Token Decoder & Verifier
Decode the header and payload of a JSON Web Token (JWT) without verifying the signature. Inspect claims securely on the client side. Great for developers.
Morse Code Translator - Online Morse Encoder & Decoder
Translate text to Morse code and decode Morse signals back to text. Sound playback supported. Learn and experiment with Morse code directly in browser.
Phonetic Alphabet to Text - Online Decode Alpha Bravo
Reverse the NATO phonetic alphabet. Paste 'Bravo Romeo Alpha Victor Oscar' and get 'Bravo'. Essential for call center transcripts.
URL Encoder & Decoder - Online Percent Encoding Tool
Encode special characters into URL-safe format or decode percent-encoded strings back to plain text. Fast and reliable, runs locally in your browser.
Hex to Float Converter - Online IEEE 754 Decoder
Enter a hexadecimal string and decode it as a 32‑bit or 64‑bit floating‑point number. Low‑level developer tool.
WebCodecs Video Frame Reader - Online Decode & Display
Decode individual video frames from a local file using the VideoDecoder API. Step through frames. Cutting‑edge browser feature.
Binary to Text Converter - Online Decode Bits to String
Paste binary sequences and convert them back to readable text. Supports space-separated and 8-bit formatted strings. Quick encoding reconversion.
Caesar Cipher Encoder & Decoder - Online Shift Cipher Tool
Encrypt and decrypt messages using the classic Caesar cipher with configurable shift key. Fun for puzzles and basic cryptography lessons. Entirely browser-based.
Text to Number Code - Online A1Z26 Encoder
Encode letters to their position in the alphabet (A=1, B=2...) and decode back. A classic puzzle tool. No data leaves your device.
Pigpen Cipher Encoder - Online Masonic Symbol Translator
Encrypt text into the classic pigpen symbols and decode them back. Fun for treasure hunts and mystery games.
SMD Resistor Code Decoder - Online 3-Digit & EIA-96 Markings
Decode SMD resistor markings (3-digit, 4-digit, EIA-96) to resistance value. Enter code and get ohms instantly. Handy for PCB repair.
Emoji Cipher Decoder - Online Secret Message Fun
Decode a message hidden in a string of emojis (each emoji maps to a letter). Fun game for kids. Create your own.