A short companion for Base64 Text: when it is useful, what it expects, and what to check before using the result.
What it does
Encode UTF-8 text to Base64, or decode it back, with an optional URL-safe alphabet where + and / become - and _ and the padding is dropped. Multi-byte characters are handled correctly because the text is encoded to UTF-8 bytes first, so accented letters and emoji round-trip without corruption.
Use the tool
Open Base64 Text, add the input the tool asks for, run it, and check the output before using it elsewhere.
Input and output
- Input: text.
- Output: text.
- Category: Encoding.
Privacy and processing
Processing happens locally in your browser. This tool does not upload the input to ilham.dev.
Questions
What is URL-safe Base64 for?
Standard Base64 uses + and /, both of which have to be escaped inside a URL. The URL-safe variant swaps them for - and _ so the value can sit in a query string or a filename untouched.
Is Base64 a form of encryption?
No. It is a reversible encoding with no key, and anyone can decode it. Use the AES tool if you need actual confidentiality.
Related guide
For broader background, see Security and Cryptography Basics for Developers.