Base64 Codec
Convert text to/from Base64, handles Unicode correctly, URL-safe mode
About This Tool
Developer utilities: JSON formatting, regex testing, Base64, timestamps, UUID and JWT parsing — all processed locally, code snippets never leave your browser.
Frequently Asked Questions
Does it support Unicode?
Yes, Unicode characters are handled correctly with no mojibake.
What is URL-safe mode?
It replaces + and / with - and _, safe for URLs and filenames.
Is my data uploaded?
No, encoding and decoding happen locally.