Free Base64 Encoder/Decoder - Online Encode/Decode | ToolZen
Encode plain text to Base64, or decode Base64 strings back to original text. Supports UTF-8.
Frequently Asked Questions
1. What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII string format using 64 printable characters. It's commonly used to encode binary data in email, URLs, and JSON.
2. Is UTF-8 encoding supported?
Yes. Our Base64 encoder/decoder fully supports UTF-8 encoding, allowing you to encode and decode text with international characters, emojis, and special symbols.
3. Is my data stored on your servers?
No. All encoding and decoding is performed locally in your browser. Your data is never transmitted to any server.
Key Features
- Encode Text — Convert any text to Base64 format instantly
- Decode Base64 — Decode Base64 strings back to readable text
- UTF-8 Support — Handles all Unicode characters correctly
- Copy Output — Copy encoded or decoded result with one click
- Real-Time — Conversion updates as you type
How to Use Base64 Encoder
Step 1: Enter your text
Type or paste the text you want to encode, or paste a Base64 string to decode.
Step 2: Click Encode or Decode
Press the Encode button to encode, or Decode to decode Base64.
Step 3: Copy the result
Use the Copy button to copy the output to your clipboard.
Common Use Cases
Email Attachments
Base64 is commonly used to encode binary data for email attachments and data URLs.
API Authentication
Encode credentials for HTTP Basic Authentication headers in API requests.
Data Transfer
Encode binary data for safe transmission in text-based protocols like JSON or XML.
Why Choose ToolZen Base64 Encoder?
| Feature | ToolZen | Other Tools |
|---|---|---|
| Privacy | 100% Client-Side | Data Sent to Server |
| Cost | Completely Free | Freemium / Paid |
| Registration | No Signup Required | Account Needed |
| Encoding | Encode + Decode | Encode Only |