Free Base64 Encoder & Decoder
Convert text to and from Base64 format instantly using our online encoder and decoder tool. Works securely in your browser—no data is ever uploaded.
Encode Text to Base64
Decode Base64 to Text
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme commonly used to transmit binary data (like images or files) over text-based protocols like email and JSON. It converts binary into a readable string using 64 ASCII characters.
Why Use a Base64 Encoder or Decoder?
- 🔐 Safely encode text for transmission or storage.
- 📧 Convert binary data for use in HTML, CSS, or email attachments.
- 🔄 Instantly decode Base64 strings to retrieve original text or data.
- 🖥️ 100% browser-based. No data is sent to a server.
Common Use Cases
- Embedding images or fonts in HTML/CSS files.
- Sending binary data via APIs or email clients.
- Obfuscating sensitive or system data.
- Debugging Base64 encoded strings in software development.
Frequently Asked Questions
Yes, all encoding and decoding happen locally in your browser. Your data is never uploaded or stored.
Base64 uses uppercase (A–Z), lowercase (a–z), numbers (0–9), plus (+), and slash (/). Padding is done with =.