URL Encoder/Decoder
Encode and decode URLs and query strings instantly. 100% client-side processing - your data never leaves your browser.
Your data is processed entirely in your browser. Nothing is uploaded to any server.
Status: Ready
Input: 0 chars
Output: 0 chars
Error
Common Encoded Characters
| Character | Encoded | Description |
|---|---|---|
| (space) | %20 | Space character |
| ! | %21 | Exclamation mark |
| # | %23 | Hash/pound |
| $ | %24 | Dollar sign |
| & | %26 | Ampersand |
| ' | %27 | Single quote |
| + | %2B | Plus sign |
| / | %2F | Forward slash |
| : | %3A | Colon |
| = | %3D | Equals sign |
| ? | %3F | Question mark |
| @ | %40 | At sign |
100%
Client-Side
All processing happens in your browser. Your data never touches our servers.
Free
No Signup
Use unlimited times without creating an account. No ads, no tracking.
Fast
Instant Results
Encode and decode URLs instantly as you type with real-time conversion.
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Book a Free CallFrequently Asked Questions
What is URL encoding?
URL encoding (also called percent-encoding) converts characters into a format that can be safely transmitted in URLs. Special characters are replaced with a percent sign (%) followed by their hexadecimal ASCII value. For example, a space becomes %20 and an ampersand becomes %26. This ensures URLs remain valid even when containing special characters.
What's the difference between encodeURI and encodeURIComponent?
encodeURI is designed for encoding complete URLs. It preserves characters that have special meaning in URLs like
encodeURIComponent encodes everything except alphanumeric characters and
:, /, ?, #, and &.encodeURIComponent encodes everything except alphanumeric characters and
- _ . ! ~ * ' ( ). Use this for encoding URL parameters or query string values where special characters should be escaped.
Which characters need to be encoded in URLs?
Characters that must be encoded include: spaces, quotes (
"), less-than/greater-than signs (< >), hash (#), percent (%), curly braces ({ }), square brackets ([ ]), pipe (|), backslash (\), and caret (^). Reserved characters like &, =, +, and ? should be encoded when used as data.
When should I use URL encoding?
Use URL encoding when: passing user input as URL parameters, including special characters in query strings, encoding file paths in URLs, sending form data via GET requests, creating shareable links with dynamic content, or working with APIs that require URL-encoded data. Always encode user-supplied data to prevent URL injection and ensure data integrity.
Is this tool free and secure?
Yes, this tool is completely free with no signup required. All URL encoding and decoding happens entirely in your browser using JavaScript. Your data never leaves your computer and is never sent to any server, making it completely safe for sensitive URLs, API keys, authentication tokens, and any confidential data.