How to change a part in the URL (e.g. domain) while keeping the rest of the URL same?

Sagar Soni

February 17, 2025

Learn how to easily change parts of a URL, like the domain, while keeping the rest the same. Use Requestly to simplify URL manipulation. Read now!

Requestly’s Replace String rule allows users to replace a string (or matching pattern) with another string in the url. It looks to be very simple but it can achieve very complex use cases:

Switching Domains
Change Query Parameter Values
Fix broken/updated URLs
Pattern Matching in Replace Rule

Using Requestly to change the domain of the URL

In this example we will change the domain of the url https://stackexchange.com with stackoverflow.

Download and Install the Requestly Chrome extension.
Click on Create your first rule.
Then select Replace String and click on Create rule.
We’ll be replacing the substring exchange with overflow . Enter exchange in the Replace field and overflow in the With field.
Save the rule.

On opening stackexchange.com, this rule will replace the exchange substring with overflow and will load the webpage for stackoverflow.com.

You can try it yourself by importing this rule , also fiddle around and replace different substrings of the URL.

Learn More about Replace Rule

Written by

Sagar Soni

Sagar is the co-founder and CTO of Requestly. When he’s not busy architecting the next big thing in software development, you’ll likely find him behind the wheel, cruising the streets and enjoying the thrill of the drive. For Sagar, it’s all about the code by day and the open road by night.

How to Change Your IP Address Using Requestly

Learn how to change or spoof your IP address using the X-Forwarded-For header with Requestly. Step-by-step guide for developers to simulate client IPs easily