How do you pass a slash in a URL query string?

In URLs, special characters like the slash (/) can interfere with the normal parsing of the URL, so they need to be percent-encoded (also known as URL encoded). To include a slash in a URL query string, you’d replace it with its percent-encoded value.

forward slash in url

The slash (/) character is encoded as %2F.

For example, let’s say you want to pass the value “example/data” as a query string parameter:


In many programming languages, functions or libraries are available to perform URL encoding for you. Here’s a brief overview of a few languages:


let value = "example/data";
let encodedValue = encodeURIComponent(value);


import urllib.parse

value = "example/data"
encodedValue = urllib.parse.quote_plus(value)


String value = "example/data";
String encodedValue = URLEncoder.encode(value, "UTF-8");


$value = "example/data";
$encodedValue = urlencode($value);

These functions or methods will ensure that special characters are correctly encoded for URL use.


In conclusion, to pass a slash in a URL query string, it’s crucial to use percent-encoding to prevent any server misinterpretation or potential security risks. The slash (/) should be encoded as %2F. Utilizing built-in functions in various programming languages, like encodeURIComponent in JavaScript or urlencode in PHP, simplifies the task, ensuring that the URL remains both functional and secure. Always remember to encode special characters in URLs to maintain their integrity and intent.

Published on: 2023-08-10
Updated on: 2023-08-10

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Isaac Adams-Hands

Isaac Adams-Hands is the SEO Director at SEO North, a company that provides Search Engine Optimization services. As an SEO Professional, Isaac has considerable expertise in On-page SEO, Off-page SEO, and Technical SEO, which gives him a leg up against the competition.