Is this tool free?+
Yes. Base64 encoding and decoding are completely free with no restrictions on input size.
Do I need to sign up?+
No. No account needed. Paste text and get the encoded or decoded output instantly.
Is my data private?+
All encoding and decoding happens in your browser using built-in JavaScript APIs (btoa, atob, TextEncoder, TextDecoder). Your data is never sent to any server.
Does it support URL-safe base64?+
Yes. You can toggle the URL-safe variant, which replaces + with -, / with _, and strips the = padding. This is useful for tokens and URL parameters.