Base64 Encoder & Decoder
Convert plain text or binary data into Base64 format and decode back with full UTF-8 Unicode character support. In-browser tool.
Base64 Encoder & Decoder runs 100% in-browser on client devices with zero server latency and zero data transmission. It provides instant output with local privacy.
💡 Shortcut: Press Ctrl+Enter or ⌘+Enter to encode.
How to Use Base64 Encoder & Decoder
Step-by-step operating guide
- 1
Type or paste your text string or Base64 payload into the Input text area.
- 2
Click "Encode to Base64" to convert plain text into a Base64 string, or "Decode from Base64" to convert back.
- 3
Click "Copy Result" to save the converted payload to your clipboard.
Frequently Asked Questions
Technical and usage details for Base64 Encoder & Decoder
Does this tool support special Unicode characters and emojis?
Yes! Learntrix uses UTF-8 URI encoding safeguards prior to btoa/atob processing, ensuring non-ASCII characters and emojis encode and decode perfectly without corrupting.
Are my payloads stored anywhere?
No. All encoding and decoding operations happen client-side inside your browser sandbox memory.
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