Base64 Encode
Convert plain text into Base64 safely in your browser.
Input is processed in your browser and is not uploaded.
Output
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Base64 encoding is useful for embedding small text payloads in data URLs, configs, and transport formats. This tool handles Unicode text and gives copy-ready output. Lightweight, mobile-friendly, and built for quick repeat use.
Encode text for transport, not for secrecy
Base64 is useful when text or small binary data needs to travel through systems that prefer printable characters. It is common in Basic auth headers, small data URIs, JSON payloads, and test fixtures. This encoder handles Unicode text locally and keeps the distinction clear: Base64 makes data portable, but it does not protect it.
API and auth snippets
Create encoded strings for local API experiments, documentation examples, or Basic auth test values where the raw bytes must become plain ASCII.
Config-safe payloads
Encode short values that need to survive JSON, YAML, environment variables, or copy-paste workflows without line break or character set surprises.
Unicode checks
Confirm how Korean, Japanese, emoji, and other Unicode text is represented before sending it through a Base64-only field.
When to encode
- 1Use Base64 only after deciding the receiving system expects Base64 text.
- 2Keep the original value nearby while testing so you can decode and verify it later.
- 3Document whether the consumer expects standard Base64 or a URL-safe variant.
- 4Avoid encoding huge files in a text box when a file-specific workflow is more appropriate.
Simple encoding example
Textbun makes local tools fast.VGV4dGJ1biBtYWtlcyBsb2NhbCB0b29scyBmYXN0Lg==The output is safe to copy through text-only systems, but anyone can decode it.
Security notes
- Base64 is not encryption and should never be treated as a secret by itself.
- Encoded text is often longer than the original, usually by about one third.
- For URL paths or JWT segments, confirm whether Base64URL is required instead of standard Base64.
FAQ
What is Base64 encoding?+
Base64 represents binary or text data using ASCII characters that are safe for many transport formats.
Does Base64 encrypt data?+
No. Base64 is an encoding format, not encryption, and anyone can decode it.
Can I encode Korean or Japanese text?+
Yes. The encoder handles Unicode text before converting it to Base64.