Base64 Encoder/Decoder: Convert text and files to/from Base64 encoding. Supports text encoding, file uploads, URL-safe Base64, and includes download functionality for decoded files.

Example: Encode "Hello World" → "SGVsbG8gV29ybGQ=" or upload an image to get its Base64 representation.

🔐 Base64 Encoder/Decoder

Input Text:

URL-Safe Base64

Output:

📤

Drop file here or click to upload

Max file size: 10MB

URL-Safe Base64

Base64 Output:

❓ Frequently Asked Questions

What is Base64 encoding?

Base64 is a method of encoding binary data into ASCII text format. It converts data into a string of characters using 64 different ASCII characters (A-Z, a-z, 0-9, +, /).

When should I use Base64?

Common use cases include: embedding images in HTML/CSS, storing binary data in JSON, email attachments, data URIs, and transmitting data over text-based protocols.

What's the difference between standard and URL-safe Base64?

URL-safe Base64 replaces '+' with '-' and '/' with '_', and removes padding '=' characters. This makes it safe to use in URLs and filenames without special encoding.

Why does Base64 increase file size?

Base64 encoding increases the data size by approximately 33% because it uses 4 characters to represent 3 bytes of data.

What file types can I encode?

Any file type can be encoded: images (PNG, JPG, GIF), documents (PDF, DOC), text files, or any binary data up to 10MB in this tool.