Base64, URL and HTML Encoder / Decoder

Flip a snippet between plain text and Base64, URL-encoded, or HTML-entity form. Handy when a payload survives one hop but breaks on the next.

How to use

1. Paste your source string.
2. Pick a direction — encode or decode Base64, URL, or HTML entities.
3. Click Convert. If the input is malformed for that mode you'll get a plain error message.

Frequently asked questions

Is Base64 encryption?

No. Base64 is a text-safe encoding, not a secret. Never use it to hide sensitive data on its own.

Which Unicode is supported?

Full UTF-8. Emojis and non-Latin scripts round-trip correctly through every mode.

Anything logged?

No — this tool runs entirely in your browser.