How to encode and decode Base64
- 1Switch between Encode and Decode modes.
- 2Paste your input text or Base64 string into the input panel.
- 3View the translated output instantly and copy it with a single click.
Safe Data Transmission
Base64 represents binary and text data across media protocols (HTTP headers, email attachments, and data URIs) that only accept ASCII characters.
Architecture & Privacy
- Full UTF-8 Multilingual & Emoji support: Uses TextEncoder/TextDecoder to bypass JavaScript btoa Latin-1 RangeError exceptions.
- RFC 4648 §5 URL-Safe Base64 compliance: Safely converts standard alphanumeric alphabets.
- Zero-server execution: Safe for sensitive tokens, API keys, and JWT payload inspection.
Frequently Asked Questions
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