Converters
Encode and decode Base64 text and files locally in your browser.
100% client-side · Data never leaves your device · Free forever
Paste plain text to encode, or Base64 to decode. Processing uses UTF-8 and stays on your device—useful for debugging auth headers, data URIs, and config blobs.
Base64 only changes representation. Anyone can decode it. For confidentiality you need TLS in transit and encryption at rest, not Base64 alone.
Base64 encodes binary data as ASCII text using 64 characters. It is common in data URLs, email, and APIs—not encryption.
No. Base64 is easily reversible. Never use it to hide secrets; use proper encryption and secret storage instead.
Yes. Text is encoded as UTF-8 bytes before Base64, so emoji and non-Latin scripts round-trip correctly.