🔐 Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text instantly — free and client-side.
🔢 Encode to Base64
🔏 Decode from Base64
📄 Encode File to Base64
❓ 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’s commonly used to encode data for email attachments, data URLs, and JSON Web Tokens (JWTs).
Is Base64 encoding secure?
No. Base64 is an encoding scheme, not encryption. It provides no data protection and can be easily decoded by anyone. For security, use proper encryption like AES.
What is URL-safe Base64?
URL-safe Base64 replaces + with - and / with _, and removes the = padding. This makes the encoded string safe for use in URLs and filenames.
How much does Base64 increase file size?
Base64 encoding increases data size by approximately 33%. Every 3 bytes of input becomes 4 bytes of Base64 output.