About String URL encoder
This tool URL-encodes a string. Special URL characters get converted to percent-sign encoding. This encoding is called percent-encoding because each character's numeric value gets converted to a percent sign followed by a two-digit hexadecimal value. The hex values are determined based on the character's codepoint value. For example, a space gets escaped to %20, a colon to %3a, a slash to %2f. Characters that are not special stay unchanged. In case you also need to convert non-special characters to percent-encoding, then we've also added an extra option that lets you do that. Select the encode-non-special-chars option to enable this behavior.
- Input
- Text or data in the format described by this tool. Keep the original input if you need to compare the transformation.
- Output
- The result is shown in the work area. Use the copy or download controls provided by this tool.
- Processing
- The current implementation computes this tool's results in your browser. No account is required.
- Limits and behavior
- The selected separators, units and options affect the result. Very large inputs can make the browser slow. This page describes the current implementation, not every possible input combination.
How to use String URL encoder
- Paste or import your input, or enter values in the available fields.
- Choose settings and check the automatically updated result.
- Copy or download the result using the available controls.
Questions about String URL encoder
What input does String URL encoder accept?
Text or data in the format described by this tool. Keep the original input if you need to compare the transformation.
How do I save the result from String URL encoder?
The result is shown in the work area. Use the copy or download controls provided by this tool.
What limitations should I know about?
The selected separators, units and options affect the result. Very large inputs can make the browser slow. This page describes the current implementation, not every possible input combination.
Where does processing happen?
The current implementation computes this tool's results in your browser. No account is required.
Implementation notes reviewed: 2026-10-25