Base64 Converter
Encode text to Base64 or decode Base64 strings. Convert images and files to Base64 data URLs.
Text Input
Base64 Output
About Base64
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters.
Common Uses
Embedding images in HTML/CSS, sending binary data via email, storing complex data in JSON, API authentication tokens.
URL-Safe Base64
Replaces + with - and / with _ to make the string safe for URLs and filenames.
Metrics & Terminology Explained
JSON (JavaScript Object Notation)
A lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse.
CSS (Cascading Style Sheets)
A style sheet language used for describing the presentation of a document written in HTML.
HTML (HyperText Markup Language)
The standard markup language for documents designed to be displayed in a web browser.
URL (Uniform Resource Locator)
The address of a given unique resource on the Web.
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