Encode / Decode Base64

Encode and Decode Base64 — Text and Files

Paste text to encode/decode, or drop a file to convert it to a base64 data URI. CipherForces Base64 Encoder handles both text (UTF-8) and binary (files) accurately, with URL-safe base64 variant support.

Common Use Cases

• Email MIME parsing: Decode a base64-encoded email attachment or body.
• API debugging: Decode base64 payloads in JWT tokens, API responses, or headers.
• Data URIs: Embed an image as a base64 data URI directly in HTML or CSS.
• SSH config: Decode base64-encoded keys and config files.

Key Features

• Two-way conversion: Text↔base64 and file↔base64.
• URL-safe variant: Toggle between standard and URL-safe base64 (used by JWTs).
• Data URI output: Automatically wraps with data:image/png;base64, or the correct MIME type.
• Large file support: Handles multi-MB files without hanging.

Privacy: Encoding/decoding uses native browser APIs. Your text and files never upload.