Is Base64 encryption?

No. Base64 is an encoding, not encryption. Anyone can decode it, so never use it to hide passwords or secrets.

Does it work with emoji and non-English text?

Yes. Text is converted to UTF-8 bytes before encoding and decoded back as UTF-8, so accents, emoji and every writing system round-trip perfectly.

Why does decoding say my data isn't text?

The input is valid Base64, but the bytes inside aren't UTF-8 text. It probably contains binary data such as an image, a compressed file or encrypted content.

How do I convert an image to Base64?

Use the Image to Base64 tool, which reads the file directly and can produce a ready-to-use data URI.

Base64 Encoder / Decoder

Encode text to Base64 or decode it back, with full Unicode and URL-safe support.

Processed locally

Text

Base64

Conversion happens instantly as you type. Use Swap to reverse it.

Instructions

How to use it

01Choose Encode to turn text into Base64, or Decode to turn Base64 back into text.
02Type or paste into the left box. The result appears instantly on the right.
03Press Swap to move the result into the input and flip the direction.
04Copy the output with one click.

About

What it does

Base64 represents any data using 64 safe characters (A–Z, a–z, 0–9, + and /). It's used to embed images in CSS and HTML, carry binary data in JSON and email, and inside tokens such as JWTs and HTTP Basic authentication headers.

The browser's built-in btoa() breaks on anything outside basic Latin characters. This converter encodes your text as UTF-8 first, so Grüße 👋 works just as well as hello, and it decodes back the same way.

Settings explained

URL-safe: Uses - and _ instead of + and / and drops the = padding (base64url), so the result is safe in URLs, file names and JWTs.
Decoding: Whitespace and line breaks are ignored, missing padding is tolerated, and both standard and URL-safe alphabets are accepted.

Good for

Reading the payload of a JWT or an encoded API field
Encoding credentials for an HTTP Basic auth header
Embedding small text snippets in config or JSON
Checking what an encoded string in a log actually says

Questions, answered

Is Base64 encryption?: No. Base64 is an encoding, not encryption. Anyone can decode it, so never use it to hide passwords or secrets.
Does it work with emoji and non-English text?: Yes. Text is converted to UTF-8 bytes before encoding and decoded back as UTF-8, so accents, emoji and every writing system round-trip perfectly.
Why does decoding say my data isn't text?: The input is valid Base64, but the bytes inside aren't UTF-8 text. It probably contains binary data such as an image, a compressed file or encrypted content.
How do I convert an image to Base64?: Use the Image to Base64 tool, which reads the file directly and can produce a ready-to-use data URI.

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