UD5 Toolkit
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.
Tag: Decoder - Decode Encoded Data
27+ toolsLaundry 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.