Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text, instantly and in your browser. UTF-8 safe. Free.
Base64 encode / decode
Paste text to encode to Base64, or Base64 to decode back. UTF-8 safe.
Features
Common use cases
- 1Encoding data for a data URI
- 2Decoding a Base64 string
- 3Embedding small assets inline
- 4Inspecting encoded API payloads
- 5Encoding basic-auth credentials
- 6Debugging encoded values
Related tools
About Base64
Base64 encodes binary or text data using 64 safe ASCII characters, so it can travel through systems that only handle text — data URIs, email attachments, JSON payloads and HTTP headers.
This tool encodes and decodes both ways and is UTF-8 safe, so emoji and accented characters round-trip correctly. It runs entirely in your browser, so even sensitive data never leaves your device. Note that Base64 is encoding, not encryption — it provides no security.
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Got Questions? We Have Answers.
Is it UTF-8 safe?
Yes. It correctly encodes and decodes Unicode text (emoji, accents, non-Latin scripts) using UTF-8, not just ASCII.
Does it work offline?
Everything runs in your browser, so once the page is loaded no data is sent anywhere and it keeps working.
Is Base64 encryption?
No. Base64 is encoding, not encryption — anyone can decode it. Never use it to protect secrets.
What is Base64 used for?
Embedding binary data in text formats — data URIs, email attachments, JWTs, API tokens and config files.