Base64 Encoder / Decoder (UTF-8 Safe)
Free Base64 encoder and decoder — convert text to Base64 and back with full UTF-8 support, entirely in your browser.
UTF-8 safe by default
Plain btoa() breaks on emoji and non-Latin scripts. This tool encodes text to UTF-8 bytes first (TextEncoder) and then to Base64, so Hindi, emoji and every other Unicode script round-trip correctly. Decoding reverses the process with TextDecoder.
Frequently asked questions
Is Base64 encryption?
No — Base64 is an encoding, not encryption. Anyone can decode it instantly. It exists to carry binary data safely through text-only channels (JSON, URLs, email), never to protect secrets.
Why do emoji and Hindi text break in some Base64 tools?
Plain btoa() only handles Latin-1 bytes. This tool first encodes your text as UTF-8 (TextEncoder) and then Base64s those bytes, so every Unicode script round-trips correctly.
Where is Base64 used?
Data URLs for inline images, JWT tokens, email attachments (MIME), basic-auth headers and embedding binary blobs in JSON or XML.
Is my text uploaded?
No — encoding and decoding run entirely in your browser.