A. Encode From Text / JSON

Waiting for input...

Character Set

Newline Separator

Live Mode

Encodes in real-time as you type or paste (UTF-8 only)

Encode each line separately

Split lines into 76-character wide chunks (MIME)

Perform URL-safe encoding (Base64URL)

Encoded Output

B. Encode from File Upload

Character Set

Newline Separator

Encode each line separately

Split lines into 76-character wide chunks (MIME)

Perform URL-safe encoding (Base64URL)

Encoded Output

About Base64Encode.tech

Base64Encode.tech is a straightforward and reliable online utility designed to encode or decode data in Base64 format with ease. Whether you're transforming raw data into Base64 or converting Base64 back into readable content, our tool gets the job done quickly and efficiently.

Base64 encoding converts binary files into readable text, making it ideal for sharing data over the web or email. It’s commonly used for encoding email attachments, embedding images in HTML, or storing files in formats like JSON and XML. Learn how Base64 makes data transfer secure and efficient in text-based environments.

Advanced Features

Character Set Selection: Use UTF-8 by default, or switch to another encoding as needed. When handling file inputs, binary mode is applied to maintain the original data without any encoding or loss.
Newline Handling: Normalize line breaks between Unix (LF) and Windows (CRLF) systems before encoding.
Line-by-Line Encoding: Encode each line individually for independent data blocks.
Chunked Output: Divide the Base64-encoded result into lines of 76 characters to follow the MIME standard defined in RFC 2045.
URL-safe Base64: Generate web-friendly Base64 using "-" and "_" instead of "+" and "/", and omit padding.
Live Encoding Mode: Encode data instantly in your browser using JavaScript, without sending data to a server.

Note: "Line-by-Line Encoding" and "Split into Chunks" cannot be used together.

Privacy & Security

All communication with our servers is protected via SSL encryption. Uploaded files are processed instantly and deleted right after processing or within 15 minutes of inactivity. No data is stored or logged.

Completely Free

Base64Encode.tech is completely free to use. There's no need to install any software—just open the website and begin encoding or decoding Base64.

Understanding Base64 Encoding

Using 64 printable symbols, Base64 encodes binary content into a format that can be safely displayed and transmitted as text.

Character set typically includes A–Z, a–z, 0–9, plus + and /. The URL-safe version substitutes these characters with - and _, and removes the padding symbol =.

Example

Original text: "Web"
ASCII bytes: 87 (W), 101 (e), 98 (b)
Binary: 01010111 01100101 01100010
6-bit chunks: 010101 110110 010101 100010
Base64: V2Vi