Base64 Encode / Decode
Encode and decode Base64
Result will appear here
What Is the Base64 Encode / Decode?
This free Base64 Encoder / Decoder converts text to Base64 and back, with full UTF-8 support including emoji and non-Latin scripts. It also supports URL-safe Base64. Everything runs entirely in your browser, so your data is never uploaded — making it safe for sensitive strings, tokens, and snippets you need to encode or inspect quickly.
Key Features
What Is Base64 Encoding?
Base64 represents binary or text data using 64 printable ASCII characters, so it can travel safely through systems that only handle text — email, JSON, data URLs, and HTTP headers. It is an encoding, not encryption: it makes data transport-safe and obscured, but anyone can decode it, so never use it to protect secrets.
When to Use Base64
Developers use Base64 to embed images in CSS or HTML as data URIs, to encode credentials in HTTP Basic Auth, to store binary data in JSON, and to inspect tokens. This tool lets you encode or decode any of these instantly, with URL-safe output for values that must live in a URL or filename.
Common Use Cases
- Encoding images as data URIs for CSS or HTML
- Decoding Base64 strings found in tokens or configs
- Encoding credentials for HTTP Basic Auth
- Inspecting Base64-encoded data in API responses
Frequently Asked Questions
Is Base64 encryption?
No. Base64 is an encoding scheme, not encryption. It makes data text-safe and obscured, but it provides no security because anyone can decode it instantly. Never use Base64 to protect passwords or sensitive data.
Does this support emoji and non-English text?
Yes. The tool uses full UTF-8 encoding, so emoji, accented characters, and non-Latin scripts encode and decode correctly without corruption.
What is URL-safe Base64?
URL-safe Base64 replaces the + and / characters with - and _ and omits padding, so the output can be used safely in URLs, filenames, and JWTs without further escaping.
Is my data uploaded anywhere?
No. All encoding and decoding happens locally in your browser, so your text never leaves your device — safe even for sensitive strings.
Why is my decoded text garbled?
Garbled output usually means the input was not valid Base64, was truncated, or used a different variant (such as URL-safe) than selected. Check the input and the variant toggle.
Need more developer utilities?
Explore all tools