Developer / Encoding
Base64 Converter
Encode and decode Base64 strings without sending anything to a server. Convert text to Base64 or decode Base64 back to readable text directly in the browser.
encode
Mode
Off
URL-safe
51
Input bytes
68
Output bytes
Loaded sample text
Input
Plain text or Unicode content
Output
Ready to copy or download
VG9vbHBvcnQgbWFrZXMgcXVpY2sgYnJvd3NlciB0b29scyBlYXNpZXIgdG8gcmV1c2Uu
Why this one is useful
It handles both normal Base64 and URL-safe variants, which makes it useful for JWT-like payloads, encoded parameters, and copied test data.
Unicode text support matters in practice because plain `btoa`/`atob` handling often breaks once real-world text enters the picture.
Data URL stripping and Base64 normalization cut down the tiny cleanup steps that usually get in the way during debugging.
Common uses
Checking encoded query parameters and test payloads.
Preparing text for transport through systems that expect Base64.
Decoding API responses or copied logs during debugging.
Switching output back into input to chain quick transformations.