Encode & Decode URLs & Query Strings Securely
Convert special characters and query strings into safe percent-encoded URLs, or decode encoded links back into human-readable strings instantly.
How to Encode or Decode URLs
Convert special characters and query strings into safe percent-encoded URLs, or decode encoded links back into human-readable strings instantly.
Select Action
Choose whether to Encode standard text into percent-encoded URL format, or Decode encoded links.
Enter URL or Query String
Paste your web address, API endpoint, or parameter query string into the input field.
Instant Conversion
Our browser engine transforms reserved and non-ASCII characters into RFC 3986 compliant triplets.
Copy Clean URL
Copy your formatted, safe URL or query string with one click for web development or testing.
Why Encode URLs with Khalasna?
100% Client-Side Privacy
URLs, authentication tokens, and query strings are processed locally in your browser memory.
Full RFC 3986 Compliance
Accurately encodes spaces to %20 or +, and safely escapes non-ASCII and reserved symbols.
Component vs Full URL Modes
Support for encodeURIComponent (queries) and encodeURI (complete protocol addresses).
Arabic & Unicode URL Support
Transforms Arabic characters into standard web-safe percent-encoded sequences.
Technical Architecture: RFC 3986 Percent-Encoding & UTF-8 Octet Serialization
Uniform Resource Identifiers (URIs) are restricted by RFC 3986 to a defined set of unreserved characters ([A-Za-z0-9-_.~]). All other characters—including spaces, reserved delimiters (?, &, =, #), and non-ASCII Unicode characters (such as Arabic or accented letters)—must be percent-encoded. The encoding process translates characters into their UTF-8 byte representation, prefixing each byte with a '%' followed by two hexadecimal digits. Khalasna executes URL encoding client-side using JavaScript's native encodeURIComponent() and decodeURIComponent() functions. For complete URLs, it uses encodeURI() to preserve structural protocol delimiters (http://, :, /). When decoding, it handles malformed URI sequences gracefully without unhandled exceptions. All processing occurs locally with zero data logging.
Popular Applications for URL Encoding
Building API Query Parameters
Encode complex query parameters, redirect URLs, and search strings safely into HTTP GET requests.
Handling Arabic Web Links
Convert Arabic article titles into web-safe links or decode percent-encoded URLs for human reading.
OAuth & Webhook Redirects
Escape callback URLs properly to prevent broken redirects and security vulnerabilities in login flows.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
+
What is the difference between encodeURI and encodeURIComponent?
+encodeURI preserves URL structure characters like http://, ?, and &. encodeURIComponent escapes all special characters, making it ideal for query parameter values.
Are my URLs or private links saved on your servers?
+
Are my URLs or private links saved on your servers?
+No. All encoding and decoding execute strictly in your web browser. No URLs are ever stored or monitored.
Why do spaces become %20 in URLs?
+
Why do spaces become %20 in URLs?
+%20 is the hexadecimal percent-encoded representation of the space character (ASCII 32).
Can I decode links containing Arabic letters?
+
Can I decode links containing Arabic letters?
+Yes, our decoder converts percent-encoded Arabic sequences back into clear, readable Arabic words.
Is this URL encoder free to use?
+
Is this URL encoder free to use?
+Yes, it is completely free with no usage limits or registrations.