Web Page redirection, also called URL forwarding or URL redirection, is a World Wide Web technique for making a web page available under more than one URL address. When you need to debug URL redirection issues, Link Redirect Trace comes in handy. Link Redirect Trace is a Chrome extension with the following capabilities:
After the installation of Link Redirect Trace, you can enable or disable it . Below diagram shows it was enabled.
When it's enabled, its icon will be shown at the top-right corner of Chrome:
Clicking on the icon, it will show you the details of redirects:
With Link Redirect Trace, below redirects were recorded one time in our test. Notice that "client_redirect " type was reported. At another time, we also saw "server_redirect" type reported. In [2], it explains the differences between "Client-side redirects" and "Server-side redirects". As "Server-side redirects" is better known, we will only look at what "Client-side redirects" are in the next section.
A client-side redirect is a forwarding method in which a visitor’s browser handles redirection. Using client-side redirects has several drawbacks, namely:[2]
Due to these reasons, it is strongly recommend not to use client-side redirects. Note that our example was due to a configuration bug which doesn't exist in the real product. Client-side redirects can be done in two ways:
Meta refresh
The all-in-one redirect path analyzer.In this article, we will look at a client-side redirect example as recorded in Link Redirect Trace.
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Link Redirect Trace
After the installation of Link Redirect Trace, you can enable or disable it . Below diagram shows it was enabled.
When it's enabled, its icon will be shown at the top-right corner of Chrome:
Clicking on the icon, it will show you the details of redirects:
Client-Side Redirect Example
With Link Redirect Trace, below redirects were recorded one time in our test. Notice that "client_redirect " type was reported. At another time, we also saw "server_redirect" type reported. In [2], it explains the differences between "Client-side redirects" and "Server-side redirects". As "Server-side redirects" is better known, we will only look at what "Client-side redirects" are in the next section.
Status Code URL IP Page Type Redirect Type Redirect URL
200 https://compute-test042718run10.myserver.com/mycompute/console/view.html?undefined 10.252.182.82 client_redirect javascript https://compute-test042718run10.myserver.com/mycompute/console/error.html
200 https://compute-test042718run10.myserver.com/mycompute/console/error.html 10.252.182.92 normal none none
Client-Side Redirects
A client-side redirect is a forwarding method in which a visitor’s browser handles redirection. Using client-side redirects has several drawbacks, namely:[2]
- Search engines will not pass authority from one page to another when client-side redirects are used because they may not be crawlable. If you want to pass page authority remember to use a 301 redirect (or Server-side redirect).
- Client-side redirects break the back button: users will immediately be sent back to the same URL.
- Not all browsers support all client-side redirects.
Due to these reasons, it is strongly recommend not to use client-side redirects. Note that our example was due to a configuration bug which doesn't exist in the real product. Client-side redirects can be done in two ways:
- Meta refresh
- JavaScript redirect
Meta refresh
The meta refresh element is used to instruct a browser to refresh the current page, or load another URL. An example of what the meta refresh element looks like:
<html>
<head>
<title>HTML Page Redirection</title>
<meta http-equiv="refresh" content="0;
URL='http://www.example.com/'" />
</head>
<body>
This page has moved to example.com
</body>
</html>
<head>
<title>HTML Page Redirection</title>
<meta http-equiv="refresh" content="0;
URL='http://www.example.com/'" />
</head>
<body>
This page has moved to example.com
</body>
</html>
JavaScript redirect
You can redirect a web page via JavaScript using a number of methods. Almost all JavaScript redirect methods are related to window.location object, which is a property of the Window object, because it control over what page is loaded into the browser rests in the JavaScript property window.location property.
<script language="javascript" type="text/javascript">
window.location.href = "http://www.example.com";
</script>
window.location.href = "http://www.example.com";
</script>
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