Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text, with URL-safe support, all local.
Local
Encoding and decoding, without the round trip to a server
Encoding bugs are rarely conceptual, they are mechanical: a URL-safe Base64 string pasted into a standard decoder, a UTF-8 sequence mangled into mojibake, a percent-encoded parameter that was encoded twice. These tools show you the bytes at each step.
They are also UTF-8 aware, which the average one-line `atob()` demo is not.
2 Encoding tools
Binary ↔ Text
Convert text to 8-bit binary and back, UTF-8 aware, entirely local.
Local