Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 strings back to text. Supports UTF-8 Unicode and URL-Safe modes.
How do I use Base64 Encoder / Decoder?
Select 'Encode to Base64' or 'Decode from Base64' mode.
Optionally enable 'URL-Safe Base64' for URL string compatibility.
Paste or type your content into the input box.
Copy the output or download it as a text file.
What features does Base64 Encoder / Decoder offer?
Full Unicode / UTF-8 text support without mangling non-ASCII characters.
URL-Safe Base64 encoding option (- and _ replacements).
100% Client-Side execution — zero data sent to external servers.
Instant live conversion with real-time character count.
Frequently Asked Questions about Base64 Encoder / Decoder
Is my data private when using Base64 Encoder?
Yes! Base64 encoding and decoding is processed 100% locally in your web browser. No text or data is uploaded to remote servers.
What is URL-Safe Base64?
Standard Base64 uses + and / characters which can cause issues in Web URLs. URL-Safe Base64 replaces + with - and / with _ to make the output safe for query parameters.