Base64 Encoder
Runs entirely in your browser
Encode plain text to Base64 directly in your browser. Paste your text, encode, and copy the result.
What is Base64 Encoder?
Base64 Encoder converts plain text into Base64 — a text-safe representation made only of letters, digits, +, / and = padding. It's used to embed binary-safe data in places that only accept plain text, such as JSON fields, HTML, email, and HTTP headers.
How to use Base64 Encoder
- Type or paste your text into the Input box.
- Click Encode.
- Copy the Base64 result from the Output box.
Features
- Correctly encodes Unicode text, including accented characters and emoji.
- Shows input and output character counts.
- 100% client-side — your text never leaves your browser.
Frequently Asked Questions
Is my text uploaded to a server?
No. Base64 Encoder runs entirely in your browser. Your text never leaves your device.
Does this support Unicode text and emoji?
Yes. Text is encoded as UTF-8 before Base64 encoding, so accented letters, symbols and emoji all round-trip correctly.
Is Base64 encryption?
No. Base64 is a reversible encoding, not encryption — anyone can decode it back to the original text. Never use it to protect secrets.
What is Base64 commonly used for?
Embedding binary data (like images) in text formats such as JSON, HTML or email, and encoding credentials for HTTP Basic Authentication headers.