Encode and decode Base64 strings for data transmission
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored and transferred over media designed to deal with text, such as embedding images in HTML/CSS, sending attachments in emails, or storing complex data in JSON/XML.
Our Base64 tool allows you to encode any text to Base64 format or decode Base64 strings back to their original content. We also support URL-safe encoding (which replaces + with - and / with _) for use in URLs and filenames.
Base64 is used for encoding binary data (like images, files) into ASCII text for transmission over text-based protocols like HTTP, email, or for storage in text-based formats.
URL-safe Base64 replaces the + and / characters with - and _ respectively, making the encoded string safe to use in URLs without requiring additional encoding.
Yes, Base64 encoding increases file size by approximately 33% because it uses 4 characters to represent every 3 bytes of binary data.