Encode and decode Base64 strings online.
Encode UTF-8 text to standard Base64, or decode standard Base64 that contains valid UTF-8 text.
Paste text and choose Encode. Choose Decode to reverse the operation; copy the resulting text when ready.
Arabic, accented letters and emoji can round-trip through UTF-8 Base64 without changing the text.
Base64 is an encoding, not encryption. Binary files and URL-safe Base64 are outside this text tool's scope. The text size limits protect browser memory.
Your selected files and entered content are processed in your browser. Processing does not upload them to a conversion, QR or AI API. The site serves the scripts, fonts and any OCR models needed for the task.