When you maintain a collection of digital files, pages, or shared documents, you will eventually run into three distinct problems: content that is outdated, content that is duplicated, and links that no longer work. Treating all three the same way—deleting everything that looks wrong—usually creates more confusion than it solves, because each problem has a different cause and a different fix.

Outdated resources are still accessible and may still be partially useful. The question is not whether they can be opened, but whether the information they contain still matches current conditions. A reasonable approach is to set a review interval that fits how often the underlying subject changes, then decide for each item whether to update it, mark it as historical reference, or retire it entirely. Marking rather than deleting preserves context for people who may encounter older references elsewhere and need to understand why something was written the way it was.

Duplicates arise when the same or very similar content exists in more than one location. The practical risk is that someone edits one copy and the others fall out of sync. Rather than deleting all but one copy immediately, first identify which version is the most complete and current, then decide whether the other copies can be replaced with a pointer or redirect to the authoritative one. If the duplicates serve different audiences or live in systems that cannot link to each other, you may need to keep them but note which is the source of truth so future updates go to the right place.

Broken links are a different category because the content itself may be fine—the problem is in the reference. When a link leads nowhere, check whether the destination moved to a new address, was renamed, or was intentionally removed. If it moved, update the link. If it was removed on purpose, remove or replace the reference so readers are not sent to a dead end. Keeping a log of which links you have checked and when can help you spot patterns, such as a particular source site that restructures frequently, which tells you where to focus future checks.

The common thread is that each category calls for a different decision before you act. Outdated content asks whether the information is still valid. Duplicates ask which version should be authoritative. Broken links ask whether the destination still exists under a new address. Separating these questions keeps your cleanup focused and prevents you from accidentally removing something that is still needed or updating a copy that nobody relies on.