Base64 Encode
Encode text to Base64 online in your browser without uploading your text to a server.
What this tool does
NexKit Base64 Encode converts text into Base64, entirely in your browser, updating live as you type.
This tool uses a UTF-8-safe encoding method. The browser's raw btoa() function fails on any text containing accented characters, CJK text, or emoji - this tool works around that so any text encodes correctly.
How to encode Base64
Paste or type your text into the box. The Base64 result appears immediately and can be copied with one click.
Privacy and file handling
Your text is encoded entirely in your browser. It is not uploaded to NexKit servers by this tool.
Frequently Asked Questions
Is my text uploaded?
No. Your text is encoded locally in your browser. It is not uploaded to NexKit servers by this tool.
Does it work with accented characters, CJK text, or emoji?
Yes. This tool uses a UTF-8-safe encoding method, unlike a plain browser btoa() call which fails on any non-Latin1 character.