What is Base64 Encoder / Decoder?
Base64 Encoder / Decoder converts binary or UTF-8 text into ASCII string representations (`btoa`) and decodes Base64 strings back to text (`atob`).
Developer Tools
Base64 Encoder / Decoder
By ElvaTools Team
•
July 21, 2026
Base64 Encoder / Decoder is a free online developer utility to encode plain text or UTF-8 strings into Base64 format and decode Base64 strings back to readable text instantly.
✦ Base64 Encoder / Decoder
Client-Side Executed
❓ Frequently Asked Questions (FAQs)
Schema.org VerifiedQ1. What is Base64 encoding?
Base64 represents binary or text data in an ASCII string format using 64 safe characters, widely used in email protocols, data URLs, and web tokens.
Q2. Can I decode Base64 back to text?
Yes! Paste any Base64 encoded string and click 'Decode Base64' to restore original readable text.
Q3. Does this Base64 tool support non-ASCII characters?
Yes, our implementation handles UTF-8 strings (emojis, accents, special symbols) properly without corrupting output.
Q4. Is my data sent to any server?
No, encoding and decoding run 100% locally in your browser.