What Is Base64? How to Encode and Decode It
Base64 explained in plain words: what it is, why it exists, how to encode or decode text (including Urdu and emoji) and why it is not encryption.
Quick answer: Base64 writes any data using only letters, numbers, + and /. To encode or decode text, open the Base64 tool, choose Encode or Decode, paste your text and copy the result. It is not encryption: anyone can decode it.
Why does Base64 exist?
Some systems (email, JSON, URLs) only handle plain text safely. Base64 turns bytes, such as an image, into plain text so they can travel through those systems. The cost is size: Base64 is about one third bigger than the original.
Step by step
- Open the Base64 Encoder and Decoder.
- Pick Encode (text to Base64) or Decode (Base64 to text).
- Paste your text.
- Tap Copy.
Example: hello becomes aGVsbG8=.
Does it work with Urdu, Hindi, Arabic and emoji?
Yes. The text is converted as UTF-8, so every language and emoji comes back exactly as you typed it.
What is URL-safe Base64?
Normal Base64 uses +, / and =, which have special meanings in URLs. The URL-safe option swaps them for - and _ and drops the = padding, so the value can sit inside a link.
Base64 is not security
Never use Base64 to hide a password or key. It only changes how the data is written. For real protection you need encryption.
Related tools
JSON Formatter, URL encoder and decoder and Password Generator.