Free online data URL builder — create data URIs from text content instantly in your browser. No data is stored. Supports customizable MIME types, Base64 or UTF-8 encoding, and configurable character sets for embedding inline resources.
MIME type (e.g., text/plain, text/html, application/json, image/svg+xml)
Encoding method: base64 or utf8 (percent-encoded)
Character set (e.g., utf-8, us-ascii)
Free online data URL builder — create data URIs from text content instantly in your browser. No data is stored. Supports customizable MIME types, Base64 or UTF-8 encoding, and configurable character sets for embedding inline resources.
Runs entirely in your browser. No data is sent to our servers.
Create a data URL from a simple text string
Base64 Encode
Free online Base64 encoder — convert text to Base64 format instantly in your browser. No data is stored. Supports UTF-8 text, optional URL-safe encoding, and handles multi-byte characters.
Base64 Decode
Free online Base64 decoder — convert Base64 encoded strings back to plain text instantly in your browser. No data is stored. Supports standard and URL-safe Base64, handles padding, and decodes UTF-8 multi-byte characters.
Base64URL Encode
Free online Base64URL encoder — encode text to URL-safe Base64 format instantly in your browser. No data is stored. Produces RFC 4648 output with -_ instead of +/ and no padding, ideal for JWTs and URL parameters.
Base64URL Decode
Free online Base64URL decoder — decode URL-safe Base64 encoded strings back to text instantly in your browser. No data is stored. Handles RFC 4648 format with -_ characters and missing padding.