Web Design & Dev
Base64 Encoder / Decoder
Convert text to Base64 and back, including emoji and Indian-language scripts.
Runs entirely in your browser — nothing you enter is sent or stored.
How it works
Text is converted to UTF-8 bytes first (TextEncoder), then Base64-encoded, so non-English characters round-trip correctly. Base64 is an encoding, not encryption — anyone can decode it.
Frequently asked questions
Why does Base64 make data bigger?
It represents every 3 bytes as 4 characters, about 33% larger.
When do I need URL-safe Base64?
In URLs, file names and JWTs, where + and / have special meanings.