Browser-only encoding tool
Base64 Encoder / Decoder
Encode text or files to Base64, decode Base64 back to text or binary data, and understand what the format is used for.
Local processingText and filesData URI support
Important
Base64 is encoding, not encryption. Anyone can decode it if they have the text.
Workspace
Choose an operation.
Base64 usually makes data about 33% larger. It is useful for transport and embedding, not secrecy.
Output
Result and metadata.
Mode
encode
Input
None
Size
-
Base64 represents bytes using text-safe characters. Decoding reverses the representation, but it does not verify trust or authenticity.