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Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to readable text — instantly in your browser, nothing sent to any server.
Frequently Asked Questions
Base64 is an encoding scheme that converts binary data into ASCII text using 64 printable characters (A–Z, a–z, 0–9, +, /). It is commonly used to embed images in HTML/CSS, transmit data over text-based protocols, and encode credentials in HTTP headers.
No — Base64 is encoding, not encryption. It does not protect your data; anyone can decode a Base64 string instantly. It is purely a way to represent binary data as text.
Base64 works in groups of 3 bytes. If the input length isn't a multiple of 3, padding characters (=) are added to complete the final group. One = means one byte of padding; == means two bytes.