Base64 Encoder & Decoder

Free Online Base64 Encoder & Decoder

Base64 encoding converts text or binary data into a text-safe format made up of letters, numbers, and a few symbols. This tool lets you encode plain text or files into Base64, or decode a Base64 string back into its original text or file — all processed instantly in your browser.

Common Uses for Base64 Encoding

• Embedding small images directly into HTML or CSS as data URIs.
• Encoding data for safe transmission in URLs or JSON payloads.
• Decoding Base64 strings found in API responses or JWT tokens.
• Preparing binary file data for text-based systems like email attachments.