Base64 Encode/Decode client-side ?
How to use Base64 Encode/DecodeBase64 encoding turns text or binary data into an ASCII string that is safe to carry inside URLs, e-mails or configuration files. This tool encodes and decodes Base64 directly in your browser, which is handy for inspecting a token, embedding a small image or preparing a payload.
Everything runs locally in JavaScript. The text you paste is never sent to a server, which matters when the data contains a secret, an identifier or an authentication header. You can close the tab and nothing stays stored online.
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Base64 encoding turns text or binary data into an ASCII string that is safe to carry inside URLs, e-mails or configuration files. This tool encodes and decodes Base64 directly in your browser, which is handy for inspecting a token, embedding a small image or preparing a payload. Everything runs locally in JavaScript. The text you paste is never sent to a server, which matters when the data contains a secret, an identifier or an authentication header. You can close the tab and nothing stays stored online.
Encode or decode text to/from Base64.
How to use Base64 Encode/Decode
Base64 encoding turns text or binary data into an ASCII string that is safe to carry inside URLs, e-mails or configuration files. This tool encodes and decodes Base64 directly in your browser, which is handy for inspecting a token, embedding a small image or preparing a payload. Everything runs locally in JavaScript. The text you paste is never sent to a server, which matters when the data contains a secret, an identifier or an authentication header. You can close the tab and nothing stays stored online.
Frequently asked questions
Is Base64 a form of encryption?
No. Base64 is a simple encoding that anyone can reverse. It makes data transportable but does not protect it. Never use Base64 to hide a password or a secret.
Is my data sent anywhere?
No. Encoding and decoding happen entirely in your browser. No text is transmitted to a server.
Does Base64 handle accents and emojis?
Yes. This tool encodes the text as UTF-8 before conversion, so accented characters and emojis are preserved correctly.
Why does my Base64 string end with equal signs?
The = characters are padding added to complete the final block. It is normal and part of the standard format.