Base64 Converter

What is a Base64 Converter?

Base64 is an encoding scheme that converts binary data into ASCII strings. It is widely used for email attachments, web data transmission, and API communication. With this tool, you can easily convert text or files to Base64, or decode Base64 strings back to their original form.

Key Features

• Text Encoding – Convert plain text to Base64 strings
• Text Decoding – Restore Base64 strings to original text
• File Encoding – Convert images, documents, and other files to Base64
• URL-safe Option – Base64 conversion safe for use in URLs
• Real-time Conversion – See results as you type
• UTF-8 Support – Full support for Unicode characters including international scripts

How to Use

1. Select Mode – Choose the Encode or Decode tab.
2. Enter Text – Paste or type the text you want to convert in the input field.
3. Upload File – (Encode mode) Drag and drop or click to upload a file.
4. View Results – See the converted result in real-time.
5. Copy – Click the Copy button to save the result to your clipboard.

What is URL-safe Base64?

Standard Base64 uses the characters +, /, and =, which have special meanings in URLs. URL-safe Base64 (RFC 4648) replaces these with - and _, and removes padding, making it safe for use in URLs and filenames.

Who Is This Tool For?

• Web Developers – API data transmission, JWT token debugging
• Email Administrators – Verifying email attachment encoding
• Security Professionals – Analyzing encoded data
• Data Analysts – Restoring encoded data
• General Users – Simple text encoding/decoding

Privacy Protection

This tool runs 100% in your browser. The text you enter and files you upload are never sent to any server. All data is deleted when you close the browser. You can safely convert sensitive data with confidence.

Frequently Asked Questions