Base64 Encoder/Decoder
Encode and decode Base64 strings
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme. It represents binary data (like images or files) in an ASCII string format by translating it into a radix-64 representation. This allows binary data to be stored or transferred in text-only environments, such as email, XML, or JSON.
Why use it? Some protocols (like HTTP or SMTP) were originally designed for text. If you try to send raw binary bytes, they might be misinterpreted as control characters. Base64 ensures the data survives transport intact.
This tool provides instant encoding and decoding. It's widely used by developers to embed small images (Data URIs) directly into CSS or HTML, or to decode authorization tokens.
1How to Use
- Choose Action: Decide if you want to Encode (Text/Binary → Base64) or Decode (Base64 → Text).
- Input Content: Type or paste your string into the input box.
- Process: Click the corresponding button ('Encode' or 'Decode').
- View Result: The transformed string appears in the output box.
- Copy: Click 'Copy Result' to grab the string.
★Key Features
- Bidirectional Support: Switch between encoding and decoding seamlessly.
- Safe URL Handling: Useful for checking standard Base64 strings (note: this tool uses standard Base64, not URL-safe variant).
- Error Detection: Warns you if the string to be decoded contains invalid characters.
- No Server Uploads: All processing happens in JavaScript within your browser.
- Large Text Support: Handles long strings efficiently.