Text tool
Base64 Encode & Decode
Encode and decode Base64 with full UTF-8 support for any language and emoji.
Free｜No sign-up｜Files stay on your device
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Support us／Ko-fiAbout Base64 Encode & Decode
Many online tools garble non-English text in Base64 because they skip UTF-8 encoding. Here both encoding and decoding use UTF-8, so every language and emoji works.
Useful for API auth headers, email source code and encoded strings in config files.
Great for
- ・Reading encoded parts of email source
- ・API Basic Auth headers
- ・Encoded strings in config files
How to use
- 01Paste your text into the input box.
- 02Click the action you need.
- 03Copy or download the result — or send it back to the input to keep going.
Why use it
Private by design
Everything runs locally in your browser. Nothing passes through a server.
Instant
No software to download and no account to create.
Works everywhere
Desktop, phone, or tablet — any modern browser.
Free forever
No watermarks and no usage limits.
Frequently asked questions
Is there a size limit?
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No fixed limit. Several megabytes of text are processed in about a second, depending on your device.
Is this tool free? Do I need an account?
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It's completely free. There's no sign-up, no login and no usage limit.
Are my files and data safe?
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Everything is processed inside your browser. Your files are never uploaded to our servers and disappear when you close the page.
Does it work on my phone?
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Yes. The page is fully responsive and works in current versions of Chrome, Safari and Edge on iPhone, Android and tablets.
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