Base64 Encoder & Decoder
Encode and decode plain text, binary strings, and URLs with standard RFC 4648 Base64 and URL-Safe Base64.
1 How to Use the Base64 Encoder & Decoder
Switch between 'Encode' (Text to Base64) and 'Decode' (Base64 to Text) tabs.
Type or paste your input into the main text editor.
Optionally enable 'URL-Safe' mode to replace '+' with '-' and '/' with '_'.
Click 'Copy' to copy the converted result to your clipboard.
2 Technical Specifications
| Specification | Details & Capabilities |
|---|---|
| Charset Support | Full UTF-8 Unicode (Bengali, Emoji, Latin, CJK) |
| Variants | Standard Base64 (RFC 4648) and URL-Safe Base64 |
| Performance | Real-time browser-based byte transformation |
| Privacy | 100% Client-Side memory execution |
Trust and Privacy
100% Client-Side Privacy Guarantee
All calculations run directly in your local browser memory. Zero data is ever transmitted, logged, or stored on remote servers.
4 Frequently Asked Questions
Q. Is Base64 considered encryption?
No. Base64 is an encoding format, not encryption. It provides zero confidentiality because anyone can decode it instantly without a key.
Q. Why is Base64 used?
Base64 represents binary data using only 64 printable ASCII characters, ensuring safe transmission across networks, emails (MIME), and JSON payloads without corruption.