Paste your text, click encode or decode, copy the result. Conversion runs locally in your browser — nothing is transmitted.
Paste the text or Base64 string into the input box.
Click Encode to convert text to Base64, or Decode to read a Base64 string.
The result appears instantly — switch directions whenever you need.
Copy the output with one click. The conversion happened locally — nothing left your device.
Built for speed, privacy and reliability — on any device.
Encode readable text into Base64 or decode strings back — with instant results either way.
Peek inside JWT payloads, data URIs and encoded credentials to see what they actually contain.
Your text and tokens are processed on your device — never transmitted or logged.
Base64 makes binary-safe text from anything — quotes, newlines and symbols included.
Convert as much text as you need at zero cost — no account, no caps, on any device.
Base64 converts binary or special-character data into a safe plain-text alphabet of 64 characters. It powers email attachments, data URIs embedded in HTML and CSS, API tokens like JWTs, and anywhere text-only transport is needed.
Yes — that's half the tool. Paste any Base64 string, click decode, and the original text appears instantly. Malformed strings are flagged rather than silently mangled.
No — this is the classic mistake. Base64 is encoding, not encryption; anyone can decode it. It's for safe transport, and secrets should always be protected with real encryption instead.
No practical limit. Encoding runs locally in your browser, so even very large strings process instantly.
The tool works in all modern browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, Safari and Opera. We recommend keeping your browser up to date for the best experience.
Encode or decode Base64 text