How to Use the Base64 Encoder / Decoder
- Choose Encode or Decode.
- Type or paste your text or Base64 string.
- The converted output appears instantly.
- Copy the result.
What Base64 is for
Base64 encodes binary data as plain text using a safe set of characters. That lets you embed an image directly in HTML or CSS as a data URI, send files through systems that only handle text, or store small binary values in JSON and config.
Decoding does the reverse, turning a Base64 string back into its original text or bytes.
Encoding is not encryption
It is a common misconception that Base64 hides data. It does not: anyone can decode it instantly, so it offers no security at all. Never use it to protect passwords or sensitive information; use real encryption for that.
This tool encodes and decodes entirely in your browser, so the text you paste is never uploaded.
Frequently Asked Questions
What is Base64 used for?
Base64 encodes data into text so it can travel safely through systems that expect text, for example embedding images in HTML/CSS, encoding data in URLs, or storing binary data in JSON.
Does it handle emojis and accented characters?
Yes. The tool encodes and decodes UTF-8 correctly, so Unicode characters like emojis and accents survive the round trip.
Is Base64 encryption?
No. Base64 is encoding, not encryption, it's easily reversible and provides no security. Never use it to protect secrets.