Client-side
Base64 Encode / Decode
Encode plain text to Base64 or decode any Base64 string back to readable content, all locally in the browser with no upload.
What it does
- Encode text to Base64
- Decode Base64 back to plain text
- Runs entirely in WebAssembly, nothing leaves the tab
Base64 is not encryption — it is a reversible encoding that anyone can decode in seconds, so pasting an auth payload into a third-party site hands over the plaintext; encode or decode here with no upload.