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Base64 Encode & Decode

Convert text to Base64 and back, with correct handling of Unicode, emoji and URL-safe variants.

✓ Free forever✓ No sign-up✓ No watermark✓ Files never leave your device

How to use the Base64 Encode & Decode

  1. Choose Encode or Decode.
  2. Type or paste your text.
  3. Copy the result, or use Swap to reverse it.

Choose Encode or Decode, then type or paste. Text is converted as UTF-8, so accents, emoji and non-English characters survive the round trip. Turn on URL-safe to get a version that is safe in links.

Why use Toolbox

Private by designProcessing happens on your device. Nothing is uploaded to a server.
FastNo waiting for uploads or queues. Results appear instantly.
Works everywhereUse it on phone, tablet or desktop in any modern browser.
Truly freeNo account, no watermark and no hidden paywall.

Frequently asked questions

What is Base64 used for?

Base64 represents binary data as plain text, so it is used in data URLs, email attachments, API tokens and configuration files. It is encoding, not encryption.

What does URL-safe Base64 mean?

It replaces + and / with - and _ and drops the = padding, so the result can be used in URLs and filenames.

Is this tool really free?

Yes, always free with no sign-up, no watermark and no file limits set by us.

Are my files uploaded anywhere?

No. Everything happens inside your browser, so your files and text never leave your device.

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About Base64 Encode & Decode

Encode plain text as Base64 or decode a Base64 string back into text. Base64 is a data representation format, not encryption, and should not be used to protect secrets.

How to use Base64 Encode & Decode

  1. Paste the text or Base64 value.
  2. Choose encode or decode.
  3. Review the result and copy it if it is correct.

Frequently asked questions

Is Base64 encryption?

No. Base64 is reversible encoding and does not provide confidentiality.

Why does decoding fail?

The input may contain invalid characters, missing padding, or bytes that do not represent text in the expected encoding.

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