Base64 Encoder / Decoder
Instantly encode or decode text using Base64 format locally in your browser.
Input
Output
What is Base64?
Base64 is an encoding scheme that converts binary data into an ASCII string format by translating it into a radix-64 representation. It is commonly used when there is a need to encode data that needs to be stored and transferred over media that are designed to deal with textual data. This helps ensure that the data remains intact without modification during transport.
Is it secure?
Base64 is an encoding method, not a cryptographic encryption. It provides no security or privacy if intercepted. However, using this tool is completely safe because the encoding/decoding is performed client-side via JavaScript. Your text never leaves your computer.
Frequently Asked Questions
What is Base64 encoding used for?
Base64 is used to encode binary data (like images or files) into a standard ASCII string. This is commonly used to safely embed images directly into CSS/HTML or securely transmit data across REST APIs.
Is Base64 encryption?
No. Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string back to its original form. Do not use Base64 to hide sensitive passwords or tokens.
Can I encode images into Data URIs?
Yes. By converting an image into Base64, you can embed it directly into an
img src="..." tag, eliminating an external HTTP request.Why do I see equal signs (=) at the end of the string?
The equal signs are used for padding. Base64 encodes data in 24-bit chunks. If the input data doesn't perfectly divide by 24, padding characters are added to complete the final chunk.