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
Base64 encoding turns text or binary data into an ASCII string that is safe to carry inside URLs, e-mails or configuration files
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