Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text instantly.
Frequently Asked Questions
What is Base64 encoding?▼
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters (A–Z, a–z, 0–9, +, /). It is commonly used to embed binary data (images, files) in text formats like HTML, CSS, JSON, or email.
Why does Base64 output end with == or =?▼
Base64 works in 3-byte groups. If the input isn't divisible by 3, padding characters (=) are added to make it a multiple of 4 output characters. One = means 1 padding byte was needed; == means 2 were needed.
What is URL-safe Base64?▼
Standard Base64 uses + and / which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _, making the output safe to use in URLs and filenames without percent-encoding.
Is Base64 a form of encryption?▼
No. Base64 is encoding, not encryption. Anyone can decode a Base64 string without a key. It is used for data transport and storage compatibility, not security. Do not use it to hide sensitive data.