Encoding & Decoding
Base64, URL encoding, Hex, HTML entities and binary converters. Every tool operates locally in your browser memory without uploading your data or code to any server.
Available Encoding & Decoding
Showing all 7 utilitiesEncode text into Base64.
Decode Base64-encoded strings back to plain text and UTF-8.
Percent-encode text and parameters for safe use in URLs and APIs.
Decode percent-encoded URL strings and query parameters to plain text.
Encode special characters to HTML entities or decode entities to text.
Convert text to and from \uXXXX Unicode escape sequences and surrogate pairs.
Decode data: URIs or encode files (up to 5MB) into Base64 data URIs.
Common Workflows & Practical Use Cases
How developers and teams use these encoding & decoding daily.
HTTP Basic Auth & Data URIs
Generate Base64 strings for authentication headers and embed small assets as data URLs.
URL Component Encoding
Safely encode special characters for query strings and decode incoming URL parameters.
HTML Entity Escaping
Sanitize strings for HTML rendering by converting characters like &, <, > into valid entities.
Frequently asked questions
Encoding & Decoding Tutorials & Guides
Deepen your understanding with step-by-step guides, formulas and technical walkthroughs.