Encoding Tools
Encoding and decoding utilities for Base64, URLs, HTML entities, and other common formats.
12 tools in this category.
Tools in Encoding Tools
JSON String Escape / Unescape
Escape a string for safe embedding inside a JSON document (handles quotes, backslashes, control characters), or unescape a JSON-encoded string literal back to its raw form.
Encoding Tools
Base64 Encoder
Encode any text — including emoji and non-Latin scripts — into standard Base64.
Developer Tools
Base64 Decoder
Decode Base64 back into readable text, with clear errors for malformed input.
Developer Tools
URL Encoder
Percent-encode text for safe use in URLs — as a query value or a full URL.
Developer Tools
URL Decoder
Decode percent-encoded URLs and query strings back into readable text.
Developer Tools
JWT Sign (HS256 / RS256)
Sign a JSON Web Token with HS256 (HMAC shared secret) or RS256 (RSA private key). Output is a standard compact JWT (header.payload.signature).
Security Tools
Image to Base64
Turn a small image into a Base64 data URL you can paste into HTML or CSS.
Image Tools
EMV TLV Parser
Decode an EMVCo tag-length-value payload into a readable tree. Same format used by PIX, QRIS, PromptPay, DuitNow, VietQR, and BharatQR.
Developer Tools
HTML Entity Encoder/Decoder
Encode special characters to HTML entities (& < > " ’) and decode named, decimal, or hex entities back to text.
Encoding Tools
Morse Code Translator
Translate text to Morse code and decode Morse back to text. Letter-perfect ITU/ANSI standard.
Encoding Tools
Base32 Encoder/Decoder
Encode text to Base32 and decode Base32 strings back. RFC 4648 alphabet, UTF-8 safe.
Encoding Tools
AES Encrypt / Decrypt
Encrypt or decrypt text with a password using AES-256-GCM. The encryption runs entirely in your browser, the password never leaves the page, and the result is a portable text envelope you can paste into an email, a chat, or a file.
Security Tools