About this tool
Encode special characters into RFC 3986 percent-encoded strings or decode encoded URLs back to human-readable text with dedicated component and full-URI modes.
URL Encode/Decode
Convert text and query parameters to and from RFC 3986 percent-encoding with component and full URL modes.
Example
- mode: encode
- strategy: component
- value: query=dev tools&safe=true
Output
DEVWaiting
Run the tool to generate output.
When to use this tool
Use URL Encode/Decode when query strings, redirects, or webhook callbacks break because reserved characters like spaces, ampersands, or question marks are not encoded properly.
Inputs, Formats & Specifications
- Accepted Inputs
- Raw text, query parameters, or percent-encoded URL strings
- Output Formats
- Percent-encoded string or decoded readable text
- Supported Standards
- RFC 3986 percent-encoding (e.g. `%20` for space, `%2F` for `/`, `%3F` for `?`)
- Browser Limits & Scope
- Malformed percent-sequences (such as a trailing `%` without two hex digits) trigger clear syntax warnings rather than silent failure.
How to use this tool
- Choose your mode: 'Encode' (Text to URL-safe percent-encoding) or 'Decode' (Percent-encoded to plain text).
- Select encoding scope: 'Component' (encodes slashes and query delimiters) or 'Full URL' (preserves URL structure).
- Paste your text or query string into the input area.
- View the converted result and copy it with one click.
Examples
API Query String Encoding
Encode spaces, ampersands, and special characters in search parameters like `q=cats & dogs?` into `q=cats%20%26%20dogs%3F` to prevent broken API calls.
Redirect URL Parameter Parsing
Decode an encoded return URL like `redirect_uri=https%3A%2F%2Fapp.example.com%2Fcallback` to verify its destination domain.