Free OnlineText Tools
String Encoder/Decoder
Encode and decode strings with Base64, URL encoding, HTML entities, and more. Free online string encoding tool.
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Key Features — String Encoder/Decoder
Base64 encode and decode
URL encode and decode
HTML entity encode and decode
Unicode escape and unescape
Multiple encoding formats in one tool
Why Use This Tool — String Encoder/Decoder
Free Online String encoderBase64 encoder — for EveryoneFast & Easy Url encoderHtml encoder — 100% FreeFree Online Text decoder
Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
Get instant results with zero wait time. No server delays, no loading screens.
Works Everywhere
Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — String Encoder/Decoder
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into a set of 64 ASCII characters. It is commonly used to embed images in CSS, transmit data in email attachments, and pass binary data through text-only channels like JSON or XML.
When should I use URL encoding?
URL encoding, also called percent encoding, should be used whenever you include special characters in a URL query string. Characters like spaces, ampersands, and equals signs are replaced with percent codes such as %20, %26, and %3D to ensure the URL is parsed correctly.
Can I decode a string I did not encode here?
Yes. You can paste any Base64, URL-encoded, or HTML-entity-encoded string into the tool and decode it. The tool works with standard encoding formats regardless of where the encoding was originally performed.