Local-onlyencode · decode · never uploaded
Base64 Encoder / Decoder
Encode text to Base64, or decode Base64 back to text. Supports Unicode, emoji and the URL-safe variant. Processed locally in your browser.
What this does
- Encodes any text as UTF-8 Base64 (standard or URL-safe).
- Decodes Base64 (including URL-safe and defanged IOC variants) back to text.
- Runs fully in your browser — private data never leaves your device.
Related Knowledge
- Decode JWTs Safely — Base64url in practice.
- Analyze an Indicator — defang and decode Base64-encoded IOCs.