Old posts are often a site’s best assets. They’ve had years to collect links and rankings. But they also go stale: the year in the title gets old, the advice drifts out of date, and newer competitors answer the question better. A good refresh can bring the traffic back. A careless one can lose what’s left.

What is content decay?

Content decay is the slow loss of search traffic on a page that used to perform well. Nothing breaks: the page just gets a little less relevant every month while competitors publish newer, better answers. Because it happens gradually, it’s easy to miss until the traffic is mostly gone.

Signs a post needs a refresh

  • The title mentions a past year. “Best tools for 2024” looks abandoned in 2026.
  • It was last updated more than a year ago and the topic has moved on.
  • It’s losing clicks. In Search Console, compare the last 28 days with the 28 before. A steady drop is the clearest signal.
  • It’s thin for a guide. If competitors cover the topic in depth and you have 400 words, you’re unlikely to keep up.
  • It doesn’t answer the questions people ask. No FAQ, no clear answers near the top.

What to keep

The safest refreshes change as little as possible of what already works.

  • Keep the URL. Changing it throws away links and history. If you must, redirect the old address.
  • Keep the core topic. If the post ranks for “sourdough starter problems”, don’t turn it into a general bread guide.
  • Keep sections that still earn their place. Update them; don’t delete them.

What to change

  1. Update the title and description so they’re current and still contain the main search phrase.
  2. Fix facts, prices and screenshots that are out of date.
  3. Add a section that covers what has changed or what readers now ask.
  4. Add a short FAQ answering the real questions behind the search.
  5. Add internal links to newer posts and to the pages you want to rank.
  6. Update the visible heading so it matches the new title.

After you publish

Change the “last updated” date only if you changed something meaningful. Then give it time: Google usually needs a few weeks to re-evaluate a page. Watch clicks and impressions in Search Console, not daily rankings.

How OnPage Agent helps

The agent flags posts with stale years, old modified dates, thin content, missing FAQs and few internal links, and, with Search Console connected, puts the ones losing the most clicks first. It drafts the new title, description, section and FAQ in your brand voice for you to review. When you approve, it updates the post through the WordPress plugin, keeps the URL, and stores the old version so you can roll back.