SEO monitoring

Monitoring systems can cover many areas, and SEO is one of the highest priorities. Things are constantly happening inside or outside the company, deliberately or by mistake, that can damage the visibility a website has built up on Google across different search topics.

Reporting systems are therefore set up to signal immediately if any of a number of defined performance indicators changes or a critical event occurs. Proactive monitoring makes it possible to identify problems before they have a major impact and to act quickly to restore rankings.

SEO is particularly sensitive to change. A simple technical change on the website can cause important pages to be de-indexed. An algorithm update from Google can shift rankings drastically overnight. Competitors can take over top positions. Without monitoring, these problems are often discovered only when organic traffic has already fallen sharply.

Why SEO monitoring is critical

SEO takes a long time to build but is easy to destroy

Building rankings

Takes months of work (content, backlinks, technical optimisation).

Losing rankings

Can happen overnight (a technical fault, an algorithm update, a competitor).

Regaining lost rankings can take a long time.

Result: Proactive monitoring prevents months of work from being lost.

Organic traffic = the largest traffic source for many

For many websites, organic search is one of the largest traffic sources.

If half of the traffic comes from organic search and organic traffic falls by 40 per cent, total traffic falls by 20 per cent.

Direct impact on revenue: less traffic means fewer conversions and lower revenue.

Without monitoring, problems are discovered too late

Without monitoring

“We have lost 60% of our organic traffic in the past month. What happened?”

With monitoring

“Alert: Search phrase X has fallen from position 3 to 15. Investigate immediately.”

The difference

With monitoring, problems are detected on day 1 instead of in week 4. That makes them much easier to put right.

Google’s algorithm changes constantly

Google makes thousands of updates a year

Most of them small, but some large (core updates).

Core updates

Can shift rankings dramatically.

Without monitoring

Discovered only once traffic has fallen.

With monitoring

Correlate ranking changes with known updates and understand the impact quickly.

The four monitoring areas

1. Monitoring external results

Purpose: Monitor how the website performs in Google’s search results.

Signals from several of these points often occur together

The ranking for a key phrase deteriorates

What is monitored: The position for an important search phrase changes.

Example: “Search phrase ‘digital marketing Stockholm’ has fallen from position 3 to position 12 (-9 positions).”

Exposure (impressions) falls even though the position holds

What is monitored: Impressions for a search phrase or group of search phrases fall, but the position stays the same.

Example: “Impressions for search phrase X have fallen from 10,000 to 6,000 a month, a decrease of 40 per cent, despite an unchanged position 2.”

Clicks fall even though the position holds

What is monitored: Clicks from a search phrase fall but the position stays the same.

Example: “Clicks from search phrase Y down from 500/month to 250/month (-50%), with the position unchanged at position 4.”

CTR deteriorates

What is monitored: The click-through rate (CTR) falls for a search phrase.

Usually correlates with the previous point (clicks falling).

Threshold

CTR falls >20% for an important search phrase.

Example

“CTR for search phrase Z has fallen from 8 to 5 per cent, a decrease of 37.5 per cent.”

Actions

Optimise the snippet (title, description) to make it more clickable.

2. Monitoring external events

Purpose: Monitor changes in Google’s search results that affect visibility.

The competitors around your position change

What is monitored

For a search phrase where the company ranks, which competitors appear around it? If they are suddenly replaced, it may indicate an algorithm change or that competitors have optimised their pages.

Example

“Search phrase ‘SEO agency’, position 5: The competitors in positions 4 and 6 changed from [Company A, B] to [Company C, D].”

A featured snippet disappears

What is monitored

The company had the featured snippet for a search phrase, which has now disappeared or been taken by a competitor.

Impact

Losing a featured snippet can reduce the clicks on the search phrase.

Example

“Featured snippet for ‘how does SEO work’ lost to competitor X.”

Partners have removed links

What is monitored

Backlinks from important partners disappear.

Impact

Backlinks are a ranking factor. If many important links disappear, rankings may fall.

Example

“Backlink from [important partner site] has disappeared.”

The wrong page ranks for a search phrase

What is monitored

A page other than the intended landing page starts ranking for an important search phrase.

Problem

“Keyword cannibalisation”, where Google may find it hard to decide which page is most relevant.

Example

“For the search phrase ‘digital marketing’, a blog post ranks instead of the main service page.”

An active page has been de-indexed

What is monitored: Important pages disappear from Google’s index.

Example: “Product page X de-indexed, previously ranked in position 2 for search phrase Y.”

3. Monitoring internal results

Purpose: Monitor how users arriving from organic search behave on the website.

The bounce rate increases generally for organic traffic

What is monitored: The bounce rate from organic search increases. In GA4, the bounce rate is the share of sessions that were not engaged: no more than 10 seconds, no key event and no more than one page view.

Threshold

A 10 per cent increase in the bounce rate over two weeks.

Example: “Bounce rate for organic traffic up from 45% to 58% (+13 percentage points).”

The bounce rate increases for a specific device

What is monitored

The bounce rate from mobile or desktop increases.

Example

“Bounce rate on mobile up from 50% to 70% (+20 percentage points), desktop unchanged.”

The bounce rate for a landing page increases

What is monitored

The bounce rate for a specific landing page (important for SEO) increases.

Example

“Bounce rate for /digital-marketing up from 40% to 65% (+25 percentage points).”

The bounce rate for a landing page increases from a specific source

What is monitored

The bounce rate for a landing page from a specific traffic source (for example a particular search phrase) increases.

Example

“Bounce rate for /services from the search phrase ‘SEO services’ up from 35% to 70%.”

The bounce rate for a landing page increases for a specific device

What is monitored

The bounce rate for a landing page from mobile or desktop increases.

Example

“Bounce rate for /products on mobile up from 45% to 75%, desktop unchanged.”

Actions: Test the page on mobile and optimise whatever is not working.

4. Monitoring internal events

Purpose: Monitor changes on the website that can affect SEO.

The title, heading or content of a landing page has changed

What is monitored

Important on-page elements change on pages that rank for important search phrases.

Risk

Can affect rankings negatively if the change makes the page less relevant to the search phrase.

Example

“Title for /digital-marketing changed from ‘Digital Marketing – SEO & SEM’ to ‘Web Services – Everything for Your Digital Presence’.”

Problem

The new title is less specific for “digital marketing”, which can affect the ranking.

Internal links to a landing page have been removed

What is monitored

The number of internal links to an important landing page falls.

Impact

Internal links distribute link equity. Fewer links give the page lower authority.

Example

“Internal links to /seo-services down from 25 to 10 (-60%).”

Content on another page has changed so that the search phrase now appears there too

What is monitored

The risk of keyword cannibalisation. A search phrase that previously appeared only on the intended landing page now appears on several pages.

Problem

Google may find it hard to decide which page should rank.

Example

“Search phrase ‘SEO consultant’ previously only on /seo-services, now also on /about-us and /blog/seo-tips.”

The loading time of important landing pages has deteriorated

What is monitored

The page load time (Core Web Vitals) of important pages increases.

Impact

Google’s ranking systems use Core Web Vitals, but as part of the overall page experience.

Threshold

LCP (Largest Contentful Paint) above 2.5 seconds at the 75th percentile.

Example

“LCP for /products has risen from 1.8 s to 4.2 s, an increase of 133 per cent.”

The website’s structure has changed

What is monitored

The navigation, menu and submenus change.

Impact

The internal link structure, and with it the distribution of link equity, may change.

Example

“Main menu changed: the ‘Services’ submenu collapsed, 5 service pages lost their navigation links.”

Tools for SEO monitoring

Rank tracking

Google Search Console

Backlink monitoring

Site monitoring

Core Web Vitals monitoring

Change detection

The SEO monitoring process

Step 1: Prioritise search phrases

Not every search phrase can be monitored. Focus on the most important ones.

The number of search phrases to monitor depends on the size of the website.

Step 2: Set up rank tracking

Tools

Semrush, Ahrefs, AWR

Frequency

Daily tracking (to detect problems quickly)

Step 3: Configure Search Console alerts

Alternatively: A manual check in Search Console every week.

Step 4: Set up backlink monitoring

Tool: Ahrefs

Step 5: Scheduled site crawl

Tool

Screaming Frog (scheduled with a cron job or the built-in scheduler)

Frequency

Weekly

Step 6: Monitor Core Web Vitals

Tools

Lab measurement via the PageSpeed Insights API or real user monitoring (RUM) for quick detection, Google Search Console for the trend

Frequency

Daily check

Step 7: Review alerts and act

Common SEO problems that monitoring catches

Problem 1: Robots.txt blocks important pages

Alert

“Important pages are blocked from crawling.”

Cause

A developer changed robots.txt by mistake.

Detected

Day 1 (with monitoring). Week 4 (without monitoring).

Action

Fix robots.txt and request re-indexing.

Impact with monitoring

Minimal (fixed before rankings are affected).

Impact without monitoring

The pages can lose visibility for as long as the block remains.

Problem 2: A competitor takes over a featured snippet

Alert

“Featured snippet for ‘SEO guide’ lost.”

Cause

A competitor has optimised its content better.

Detected

Day 1 (with monitoring). Week 8 (without monitoring, once traffic has fallen).

Action

Analyse the competitor’s content and optimise your own.

Impact with monitoring

Win the snippet back within 2-4 weeks.

Impact without monitoring

The clicks from the snippet are missing for longer.

Problem 3: Core Web Vitals deteriorate after a deployment

Alert

“LCP for /products up from 1.5 s to 4.0 s.”

Cause

New code deployed with unoptimised images.

Detected

Day 1 with lab measurement or RUM. Search Console and the field data in PageSpeed Insights show the deterioration gradually, because they are based on the last 28 days.

Action

Roll back the deployment or optimise the images.

Impact with monitoring

Fixed before rankings are affected.

Impact without monitoring

Visitors get a slower page for longer.

Best practices for SEO monitoring

Focus on business impact

Do not monitor everything. Monitor what drives revenue.

Correlate with Google updates

When major ranking changes occur: Check whether there has been a recent Google core update.

If there is a correlation: The ranking change is probably due to the algorithm, not a technical fault.

Document all alerts and actions

Use: Learn from past problems and identify patterns.

Test the monitoring regularly

Quarterly

Simulate problems (change the title of an important page, remove internal links).

Verify

Does an alert come through?

From alert to recovery

Process

1. Alert sent → “Search phrase X has fallen 8 positions”
2. Verify → Is it accurate? (Check Search Console, search Google manually)
3. Diagnose → Why did it happen? (A technical fault, the algorithm, a competitor?)
4. Fix → Fix the problem
5. Monitor → Is the ranking recovering?
6. Document → Log what happened and how it was fixed

Contact us about SEO monitoring

Carnaby helps companies set up comprehensive SEO monitoring, from rank tracking to technical and backlink monitoring, so that problems are detected before organic traffic is affected.

Contact us →