Base64 Encode / Decode
Encode text strings or binary files to Base64 format and decode Base64 back to readable text. Supports URL-safe Base64 encoding.
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Frequently Asked Questions
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It is commonly used to encode binary data (images, files) for transmission in text-based protocols like email and HTTP.
What is base64url?
Base64url is a URL-safe variant that replaces + with - and / with _, and omits padding characters (=). It is used in JWTs, OAuth tokens, and URL parameters.
Is Base64 encryption?
No! Base64 is encoding, not encryption. It is easily reversible by anyone and provides no security. Do not use it to protect sensitive data.
Why does Base64 increase data size?
Base64 encodes every 3 bytes of input into 4 characters, increasing the size by approximately 33%.
About Base64 Encode / Decode
Encode text strings or binary files to Base64 format and decode Base64 back to readable text. Supports URL-safe Base64 encoding.