Use case

Content decay tool: catch the facts going stale, not just the traffic

A content decay tool usually tells you which pages lost clicks. Veritas works one step earlier: it re-checks the claims on your pages and flags the statistics, dates and facts that have gone out of date, often before rankings move.

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Facts checked 30 October 20268 min readEvery claim sourced

Key takeaways

Every content decay tool we checked waits for traffic or rankings to fall.
Rule out seasonality first: Google's method compares 16 months and year over year.
Stale facts can sit on pages that still rank. Veritas finds them before traffic reacts.

Content decay normally means a page slowly losing organic traffic and rankings. Every tool that ranks for this search measures it that way, from Search Console or analytics data. That is useful, but it means the alarm only rings after the loss.

This guide compares how the main tools detect decay (from their own pages, checked in October 2026), shows Google's own method for telling decay from seasonality and algorithm updates, and explains the kind of decay traffic data can't see: facts on the page that stopped being true.

How the main content decay tools detect decay

All of them start from traffic. What differs is the data source, the window and the threshold:

Animalz Revive (free)

Connects to Google Analytics 4 and looks at 12 months of organic traffic. Its original method scored pages on the share of traffic lost from the peak, how many months declined, and how recently. Output is a ranked list of posts to refresh.

SEOTesting

Uses Search Console to list the pages that lost the most clicks or impressions over 12 months, and lets you open the peak month to see which queries fell away.

Wellows (free)

Reads Search Console impressions over a range you pick, from 24 hours to 16 months, against a decay threshold you set.

Frase Content Guard

By default flags pages with a 20% or larger traffic drop over 8 weeks, then sorts the likely cause into competitor, freshness, intent, algorithm or AI-citation loss. Plans cap how many pages are watched.

Clearscope

Compares the last 90 days of clicks with the same 90 days a year earlier, with a 12-month trend line.

Ahrefs

Its own decay guide uses a "Declining" filter on Top Pages over 12 months, and a quarterly review of pages down more than 20% year over year. Its Content Changes view separates pages that declined after an edit from pages that declined untouched.

Search Atlas

Combines low-traffic and low-impression filters with on-page grading, including a freshness score.

Frase comes closest to the content itself: after a drop, it flags outdated date references and stale statistics. Even there, the trigger is the traffic loss.

Before you call it decay: Google's triage method

A falling line isn't always decay. Google's guide to debugging drops in Search traffic (updated December 2025) lists the usual causes: algorithm updates, technical problems, security or spam issues, site moves and seasonal shifts in interest. Its method is worth following before you rewrite anything:

Look at 16 months, not 3

Set the Search Console Performance report to the last 16 months to see whether the dip repeats every year. The report defaults to the last 3 months.

Compare year over year

Compare the last 3 months with the same period a year earlier, and break it down by query, page, country, device and search appearance.

Read the size of the drop

Google's example of a small drop is a page moving from position 2 to 4: traffic falls noticeably while impressions barely change. Its advice for pages that still perform well is to avoid radical changes.

Check clicks against impressions

Flat impressions with falling clicks point to the title, the snippet or a competitor's rich result rather than to the content.

Check outside your site

Use Google Trends to see whether interest fell across the web, the Data Anomalies page for reporting glitches, and Google's ranking-updates list. In 2026 it shows core updates starting on 27 March and 21 May, plus several spam updates.

Seasonality: the most common false alarm

Seasonal dips look exactly like decay to a tool that only compares recent months. When the agency Inflow tested one decay tool (ClickFlow) on an ecommerce client in 2020, three of the tool's top five flagged pages were seasonal, and between half and four-fifths of its top ten were false alarms. That is one client, but the lesson holds: prefer tools that compare year over year, as Clearscope does, or check the 16-month view yourself before acting.

No vendor in this search publishes a false-positive rate for its decay alerts.

The decay traffic data can't see

Traffic tools find pages that are losing readers. They can't find pages that are losing accuracy while keeping their readers. That second kind of decay can happen on any site with an archive:

a "2024 survey" figure when the 2026 edition is out;
a named chief executive or minister who has since left;
a price, rate or threshold that has changed;
"the newest model" or "the largest" after a rival overtook it;
"next year" or "coming soon" about something that already happened.

These pages can rank well for months while giving readers wrong information. When rankings finally slip, the stale facts are one cause among several, and the traffic tool can't tell you which sentence to fix.

Checking claims directly reverses the order: you find the stale facts first, fix them, and the page is accurate before readers or rankings react. For more on this, see our guide to outdated content detection.

See which facts on your site have gone out of date.

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Numbers about content decay to be careful with

Decay articles repeat statistics that don't hold up. Two we checked in October 2026:

"66% of pages older than two years lose traffic, according to Ahrefs."

We couldn't find this figure in Ahrefs' content decay guide or in any Ahrefs study we opened. Pages quoting it don't link a source, and one quotes 68% and 66% on the same page. Ahrefs' own 2025 study of ranking pages points the other way: 72.9% of pages in Google's top 10 were more than three years old.

"96.55% of pages get no Google traffic, many of them decayed."

The Ahrefs study behind the 96.55% figure (2023) covered about 14 billion pages in Ahrefs' own index and gave the main reasons as no search demand, no backlinks and a mismatch with search intent. It doesn't say those pages decayed.

Age alone isn't the problem. Old pages rank; inaccurate ones lose trust.

Refresh, rewrite, consolidate or prune?

Once you know why a page slipped, the fix follows:

Refresh

When the page still matches what searchers want but its facts, examples or screenshots are dated. Correct the claims, cite current sources, then update the visible date.

Rewrite

When search intent has shifted, for example from a definition to a comparison.

Consolidate

When two of your pages compete for the same query; merge them and redirect the weaker one.

Prune or redirect

Pages with no search demand and no links, which no refresh will rescue.

Google's guidance on helpful content also asks whether you change page dates to look fresh when the content hasn't substantially changed. A refresh should change the facts, not just the date.

How Veritas works alongside a decay tool

Veritas is an autonomous fact-maintenance agent built for SEO and content teams, editors and publishers with large archives. It doesn't read your traffic. It reads your pages.

Finds pages

From your sitemaps, sitemap indexes and RSS or Atom feeds.

Pulls out checkable claims

Statistics, dates, who holds a role, quotes, events, comparisons and superlatives, and skips opinion and prediction.

Looks for current evidence

Outside your own site, preferring primary sources such as statistics offices and official records.

Labels each claim

Supported, contradicted, outdated, misleading or unverifiable, and sends only confident problems to your queue with evidence and a suggested rewrite.

Re-checks on a schedule

Fast-moving claims after 7 days, slowly decaying ones after 45, stable ones after 365. Unchanged claims are never re-checked or paid for twice.

Scores each page

The health score is the share of its checked claims that are not problems.

Used together, the two answer different questions. The decay tool says which pages are losing traffic. Veritas says which sentences on those pages, and on the pages still doing well, are no longer true.

Honest limitsWhen Veritas isn't the right fit

You need traffic and ranking trends

Use a Search Console based decay tool; Veritas doesn't measure traffic.

The cause is intent or competition

A content optimisation tool or a rewrite will help more than fact checks.

Your pages need JavaScript to show their text

Veritas reads the HTML a page serves.

Your content is mostly opinion

Veritas skips opinion and prediction, so there may be little for it to check.

Read more about Veritas, or see how affiliate teams use claim checks in our page on outdated statistics on affiliate sites.

How Veritas works

Finds your pagesReads your sitemaps, Google News sitemaps and RSS or Atom feeds on a schedule.
Pulls out the claimsStatistics, dates, who holds a role, quotes, events. Opinion is skipped.
Checks the evidenceSearches outside your site and prefers primary sources.
Hands editors the fixConfident findings only, with citations and a one-click rewrite.

Frequently asked questions

What is a content decay tool?

Software that finds pages losing organic traffic or rankings over time, usually from Google Search Console or analytics data, so you can decide what to refresh. Most flag a page after a set drop over a set window, such as 20% over 8 weeks.

How do I find content decay in Google Search Console?

Set the Performance report to the last 16 months, compare the last 3 months with the same period a year earlier, and sort pages by the change in clicks. Then check queries, devices and countries to see where the loss came from.

How do I tell content decay from seasonality?

Compare year over year rather than with the previous few months. If the same dip appears every year, it is seasonal. Google Trends shows whether interest in the topic fell across the web.

Are there free content decay tools?

Yes. Animalz Revive and the Wellows content decay tool are free, according to their own sites, and Search Console itself is free if you run the comparisons by hand.

Does updating the publish date fix content decay?

Not on its own. Google's helpful content guidance warns against changing dates to make pages seem fresh when the content hasn't substantially changed. Fix the stale facts, then update the date.

Can Veritas replace a content decay tool?

No. Veritas checks whether the claims on your pages are still true; it doesn't track traffic. You can use both: one to spot pages losing readers, the other to find the outdated facts.

Keep every page true

Veritas re-checks the facts across your published pages and hands editors a sourced fix when one goes stale.

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Related guides

An outdated content detector that checks the facts, not the datesMost tools sold as an outdated content detector flag pages by age or by falling traffic. Veritas reads each page, pulls out the checkable claims and tests them against current sources, so you see which sentence went stale and why.

13 sources, checked 30 October 2026