Evergreen content that once ranked high erodes over time. If popular posts have not been refreshed in 18+ months, Google starts preferring newer competitor results - even if your content is still relevant.
Why this matters
Google runs an algorithm called Query Deserves Freshness (QDF) - for some queries, Google prefers newer results. Newsy queries ("2026 elections") get a strong freshness boost. But even evergreen queries ("how to choose a laser printer") benefit from a subtler freshness signal - content updated in the past year outranks 5-year-old content.
The reasoning: Google understands the world changes. Printer-buying advice from 2019 is dated - new technology, new models, new prices. Google recognizes this and prefers current content.
Secondary impact: user signals. When a visitor lands on a post and sees "March 2019", they hit back - Google attributes that bounce to a different result. Even if the content is technically still accurate, the date alone makes it suspect.
Direct ranking impact: posts not refreshed in 2+ years drop on average 3-7 ranking positions, even if the content is still accurate. That equals 20-50% organic traffic loss for the post.
How to detect
Open Google Search Console > Performance. Set the range to "Last 16 months" and filter by Pages. Identify the posts with the highest clicks/impressions that also show a recent decline. Cross-reference against the WordPress modified-date column.
Complementary check: in Google Analytics > Pages and Screens, sort by landing page (posts) and the 90-day trend column. Pages in decline are refresh candidates.
Third check: tools like Ahrefs or Semrush flag "Decaying pages" - URLs that lost rankings in recent months.
How to fix
An orderly refresh process per post:
- Read the post in full. Note what is wrong, what is missing, what needs updating.
- Update statistics. "What percent" or "how many users" claims - find a current source (2026) and replace.
- Replace dated examples. iPhone 12 references become iPhone 17. WordPress 5.5 references become WordPress 6.7+.
- Audit links. Run Broken Link Checker - fix or replace dead links.
- Add a "2026 Update" section - 2-3 paragraphs of new information added since first publication.
- Add a new image or refresh the Featured Image.
- Save. WordPress updates the "last modified" date automatically. If you want the published date to update too (shown in archives), edit via Quick Edit.
After saving, submit the URL via Google Search Console > URL Inspection > Request Indexing - this accelerates re-crawl.
Common mistakes
First mistake: bumping the date without changing content. Google detects this and triggers a date-manipulation penalty. The date must reflect a real update - not just a script that re-saves.
Second mistake: refreshing posts that are no longer relevant. A post on "how to configure Internet Explorer" no longer serves anyone - either remove the obsolete topic or rebrand to "modern browsers".
Third mistake: large content changes without forcing a re-crawl. If the post pivots to different search intent, Google may still serve the cached old version. Use URL Inspection to push a re-crawl.
Fourth mistake: refreshing 20 posts at once. Google may interpret this as spam. Pace at 2-3 refreshes per week, consistently.
Fifth mistake: changing the URL during a refresh. Editing the slug breaks external links. Keep the old URL and add a 301 only if the topic genuinely changed.
Verifying the fix
After refreshing, watch the URL in Search Console > Performance - within 2-4 weeks expect a rise in clicks and impressions. In the Pages report the URL should rebound to a higher position. In Analytics, time on page should rise (visitors linger on relevant content).