Encode & Decode

Transform your data between various formats instantly.

Treat as:

Input

Output

Note: UseFull URLmode (`encodeURI`) when you want to convert a complete URL while keeping structure like :// and ? intact. Use Componentmode (`encodeURIComponent`) to safely encode parameters values containing special characters.

Base64 Encoding

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to embed image data within HTML or CSS files, or to transmit data over media that are designed to handle textual information.

URL Encoding

URL encoding (Percent-encoding) converts characters into a format that can be transmitted over the Internet. Characters not allowed in a URI (like spaces) are replaced with a '%' followed by two hexadecimal digits.

HTML Entities

HTML entities are used to display reserved characters (like <, >, &) in HTML. For example, to display a less than sign (<) we must write: < or <

Frequently Asked Questions

When should I use Base64?

Use Base64 when you need to store complex data (like images or encrypted keys) in a text-only format like JSON or XML. It increases the data size by about 33%, so it's best for smaller files.

Why do URLs need encoding?

URLs can only contain a limited set of characters (ASCII). Any special characters (like emojis, spaces, or foreign letters) must be encoded to ensure the URL is valid and universally understood by browsers.

Is encoding the same as encryption?

No! Encoding formats data for transmission, but it provides no security. Encoded data can be easily decoded by anyone. Encryption transforms data so that only authorized parties can read it.

Can I decode partially corrupted strings?

Generally, no. Encoding schemes like Base64 are sensitive; if even one character is wrong or missing, the decoding process will likely fail or produce garbage output.