Base64 Encoder and Decoder Online — Free

Encode text to Base64 and decode Base64 back to text, in your browser. Useful for debugging APIs, tokens and encoded strings.

Open the free tool → — the tool automatically shows English when your browser language is not Chinese, via the site's built-in language switcher.

How to use it

Paste text to encode it, or paste a Base64 string to decode it. Use it to check API payloads, basic-auth style values and encoded file data.

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What is Base64?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.

When should I decode Base64?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.

Is Base64 encryption?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.