What Is a String Encoder?
A string encoder converts text between various encoding formats such as Base64, URL encoding, HTML entities, and Unicode escape sequences. It is an essential utility for developers working with web APIs, data transmission, internationalization, or any scenario where text must be safely represented in a restricted character set.
How to Use This String Encoder
- Enter or paste your text into the input area.
- Click Encode to encode. The output displays all four encoding formats at once: Base64, URL encoded, HTML entity encoded, and Hex (UTF-8 byte representation).
- Use the Copy button to copy the full output, then pick the encoded format you need.
Key Concepts
Different encoding schemes serve different purposes. Base64 converts binary-safe text for email and data URIs. URL encoding (percent encoding) escapes special characters for safe inclusion in URLs. HTML entity encoding prevents XSS attacks by converting characters like < and > into their entity equivalents. Unicode escape sequences represent characters as code points for use in source code and configuration files.
Frequently Asked Questions
What is the difference between encoding and encryption?
Encoding transforms data into a different format for compatibility or transport—it is reversible by anyone with the format specification. Encryption transforms data to keep it secret, requiring a key to reverse. Base64 is encoding (not secure); AES is encryption (secure).
When should I use URL encoding?
Use URL encoding whenever you include user-generated text in a URL query parameter. Characters like spaces, ampersands, and equals signs must be percent-encoded to avoid being misinterpreted as URL delimiters.
What are HTML entities used for?
HTML entities represent reserved characters (< > & ") and special symbols in HTML documents. Encoding user input as HTML entities prevents cross-site scripting (XSS) attacks by ensuring the browser treats the content as text, not executable markup.