How do you alert users properly that a URL is outdated or broken?
102901
How to handle link rot and broken links?
65701
How do I detect when a web page is loaded?
147958
What is a RELIABLE way to detect a client's browser and its version number?
52541
How can a user suggest a status tag edit on Meta?
8491
Can we have a red/status tag for "obsolete"?
117588
How do we encourage edits to obsolete/out of date answers?
145789
Detect if the url in an iFrame has changed
105005
No error message if the URL is very long
61409
How can I check if a URL exists via PHP?
15692
Is there a way to detect if a browser window is not currently active?
86469
Should users be directed to a 404 page or a landing page?
103728
Can I prevent the Chrome Developer Tools console from logging image 404 errors?
64605
How do I add the an expires header for external URL components as suggested by GTmetrix and YSlow?
83017
Is there a way to tag a question as old or outdated?
61139
How do I redirect users to a predetermined url after login?
152996
Health check of web page using curl
5060
Low rep users should be able to fix broken links