Base64 Encoder & Decoder
Convert text to Base64 or decode Base64 strings back to plain text. Unicode-safe (handles emojis and non-Latin scripts).
Output will appear here.What powers the Base64 Encoder & Decoder
Bidirectional encode/decode in one tool
Unicode-safe (handles emojis, CJK, Cyrillic)
Live conversion as you type
Error detection for invalid Base64 input
One-click copy output
Why the Base64 Encoder & Decoder is different
Browser-native
The Base64 Encoder & Decoder runs entirely in your browser. Input is processed locally — never uploaded, never logged, never cached anywhere outside your device.
No artificial limits
No daily quotas, no character ceilings, no "upgrade for more" walls. Every feature is the complete feature — the same on the first use as the thousandth.
Production-grade quality
Built to the same engineering bar as paid SaaS tools — accurate algorithms, audited logic, responsive design and accessibility-tested interactions.
Common use contexts
- Encoding data for URLs and HTTP headers
- Email attachments (MIME)
- Data URIs in CSS and HTML
- Storing binary in JSON
- Basic obfuscation (not encryption)
Private and secure
Zero upload
All processing happens in your browser. Input is never transmitted, logged or cached.
Works offline
Once the page loads, the tool runs without an internet connection. No network calls happen during use.
No tracking
No accounts, no cookies for tool state. Only aggregate analytics count visits at the page level.