Broken Link Checklist After Site Migration: 90 Day Plan

Why broken links appear gradually, not all at once

A migration touches every URL on a site at the same time, but the consequences of that change do not surface all at once. Search engines recrawl pages on their own schedule. Visitors following old bookmarks or saved links show up over weeks, not hours. That is why a proper broken link checklist after site migration spreads checks across months instead of treating launch day as the finish line.

What breaks immediately

Internal navigation, main menus, and anything linked from the homepage should be checked the moment the new site goes live. These are high visibility paths, and a broken link here is noticed fast by real visitors.

What breaks slowly

Old blog posts linking to now moved pages, external sites linking to your old URL structure, and search engine cached snapshots all reveal problems on their own timeline. Some of these will not surface until a crawler revisits a page weeks after launch.

The ninety day monitoring schedule

Checklist for each checkpoint

• Run a full site crawl and compare the broken link count against the previous checkpoint.
• Check search engine crawl error reports for new 404s that were not flagged manually.
• Verify old URLs redirect to their correct new destination, not just to the homepage.
• Spot check external sites that historically linked to your old URL structure.
• Log every fix so you can tell whether the problem count is trending down over time.

Quick answer: Broken link checklist after site migration

To sum up broken link checklist after site migration in one place, keep the core idea in mind as you apply it: check the actual numbers for your situation rather than relying on a rule of thumb alone, and revisit the calculation whenever the underlying inputs change. Small details often change the outcome more than people expect, so it pays to redo the math once your numbers shift. A quick recheck now saves a bigger correction later, especially once real data replaces an early estimate. Keep the process simple and repeatable so you can run it again next time without relearning the steps. Write down the inputs you used so you can compare results later and spot any change over time. This habit matters more as the stakes go up, since a small early error tends to compound the longer it goes unnoticed.

Getting comfortable with site migration

Getting this right matters because small errors compound the longer they go unnoticed, and a quick sanity check now saves a bigger correction later. Write down the inputs and assumptions you used so you can compare results later and spot exactly what changed if the numbers look different next time. Treat any online tool as a way to confirm your own reasoning rather than a black box, since understanding the logic behind the number is what actually builds confidence. Real world data is rarely as clean as a textbook example, so expect to make small adjustments once you apply the same method to your own numbers. Keep the process simple and repeatable so you can run it again next month or next year without relearning the steps from scratch. A second pair of eyes, or a second tool, is a cheap way to catch a mistake before it turns into a bigger problem downstream.

Most people get this wrong the first time not because the concept is hard, but because a small step gets skipped under time pressure. Once the basic method clicks, the same logic tends to show up again in other parts of the same field, which makes the extra few minutes spent learning it worthwhile. Getting this right matters because small errors compound the longer they go unnoticed, and a quick sanity check now saves a bigger correction later. Write down the inputs and assumptions you used so you can compare results later and spot exactly what changed if the numbers look different next time.