Category
Encoders & decoders
Encode and decode Base64, URLs, HTML, and other encodings.
7 live
Resources
Concept explainers that link back to the tools.
Live tools
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases.
Base64 Encoder
Encode text and strings to Base64 for APIs, tokens, and data transfer.
Base64 Decoder
Decode Base64 strings back to readable text.
URL Encoder
Percent-encode strings for safe URL query parameters.
URL Decoder
Decode percent-encoded URL strings back to readable text.
HTML Entity Encoder
Escape HTML special characters for safe rendering in documents.
JWT Decoder
Decode JWT header and payload locally for debugging. Signature not verified.