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Encode special characters for URLs
Files never leave your device
Not available — would need cloud processing
URL shortening and reachability checks require server-side HTTP requests to external domains.
Encode query parameters
Encode complete URLs
Decode percent-encoded strings
Handle all special chars
One-click copy result
All processing in your browser
URL encoding (also called percent-encoding) is a mechanism for encoding special characters in a URI (Uniform Resource Identifier) so they can be safely transmitted over the internet. URLs can only contain a limited set of characters from the US-ASCII character set. Characters outside this set, or those with special meaning in URLs (like &, =, ?, /), must be encoded as a percent sign (%) followed by two hexadecimal digits representing the character's ASCII code.
encodeURIComponent() encodes everything except: A-Z a-z 0-9 - _ . ! ~ * ' ( ). Use this for query parameter values.
encodeURI() preserves URL structure characters like :, /, ?, #, &. Use this for complete URLs where you want to keep the URL structure intact.
%20 (or + in form data)%26%3D%3F%23%2FWhen building URLs with dynamic values like search terms or user input. Example:?search=hello%20world&category=books%26magazines
When sending data to REST APIs via GET requests. All special characters in parameter values must be encoded to prevent breaking the request structure.
International characters, emojis, and special symbols must be UTF-8 encoded, then percent-encoded. Example: café → caf%C3%A9
| Feature | JumpTools | URLEncoder.io | W3Schools |
|---|---|---|---|
| Price | Free | Free (ads) | Free (ads) |
| Privacy | 100% client-side | Client-side | Client-side |
| Both encode modes | encodeURI + Component | Yes | Component only |
| Decode support | Yes | Yes | Yes |
| Clean UI | Minimal, focused | Many ads | Tutorial-focused |
| Data persistence | Local storage | No | No |
Encode and decode URLs instantly using percent-encoding (RFC 3986). Convert special characters like spaces, ampersands, and Unicode to URL-safe format. Use Encode Component for query parameters or Encode Full URL for complete URLs. 100% client-side - your data never leaves your browser.