Free Base64 Encoder/Decoder - Encode & Decode Instantly
Encode text to Base64 or decode Base64 strings back to plain text. Supports standard RFC 4648 and URL-safe Base64 formats.
📊 Statistics
Error
Result will appear here
✅ What I Did
💡 Quick Examples
Common Use Cases:
- • Encoding credentials for Basic Auth headers
- • Embedding images in HTML/CSS (data URIs)
- • Transmitting binary data in JSON/XML
- • URL-safe tokens and identifiers
- • Email attachment encoding (MIME)
Quick Test:
🔍 About Base64 Encoding
What is Base64? Base64 is a binary-to-text encoding scheme that converts binary data into ASCII text. It uses 64 characters (A-Z, a-z, 0-9, +, /) to represent data.
Why use it? Many systems only support text transmission. Base64 allows you to send images, files, or any binary data through text-only channels like JSON, XML, or email.
URL-safe variant: Replaces + and / with - and _ to safely include encoded data in URLs without escaping.
Size overhead: Base64 encoding increases data size by approximately 33% (4 characters for every 3 bytes).
💡 Pro Tip
Pro Tip: Use URL-safe Base64 when encoding data for URLs or filenames. This replaces + with - and / with _ to avoid URL encoding issues. Perfect for JWT tokens and data URIs in web applications.
About Base64 Encoder Decoder
Base64 encoding converts binary data into ASCII text format using 64 characters (A-Z, a-z, 0-9, +, /). This tool supports both standard Base64 (RFC 4648) and URL-safe Base64 encoding where + becomes - and / becomes _.
Common use cases include embedding images in HTML/CSS using data URIs, encoding credentials for HTTP Basic Authentication, working with JWT (JSON Web Tokens), and encoding binary data for transmission in JSON or XML.
Key Features
Easy to Use
Simple and intuitive interface
Instant Results
Get results immediately
Privacy Focused
Your data stays secure
Mobile Friendly
Works on all devices
100% Free
No payment required
Unlimited Usage
Use as many times as needed
How to Use Base64 Encoder Decoder
- Input Data: Enter or upload your data
- Configure: Set your preferred options
- Process: Click process to get results
- Download: Download or copy your results
Common Use Cases
Education
Perfect for students and researchers
Quick Tasks
Fast solutions for everyday needs
Personal Projects
Use for personal tasks and projects
Professional Work
Ideal for business and professional use
Frequently Asked Questions
Is Base64 Encoder Decoder free to use?
Yes! Our Base64 Encoder Decoder is completely free with no hidden fees or registration required.
Do I need to create an account?
No account needed. Start using the tool immediately without any signup process.
Is my data safe?
Yes, all processing happens in your browser. Your data never leaves your device.
Can I use this on mobile?
Yes, Base64 Encoder Decoder works perfectly on smartphones, tablets, and desktop computers.
Are there any limitations?
No strict limitations. You can use the tool as many times as you need.
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