How Does Num=100 Change Affect Google Ads Reporting?

30/09/2025

Understanding how changes to Google Ads can affect reporting is crucial for marketers and businesses relying on digital advertising. With the recent adjustments in how Google presents data, it’s essential to analyze its implications on reporting accuracy and overall ad performance. Here’s a deep dive into the nuances of these changes and their potential impact.

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Understanding Google Ads Reporting Changes

In recent times, Google has made significant shifts regarding its reporting frameworks, particularly concerning the infamous num=100 parameter that previously allowed users to view 100 search results per page. The removal of this feature has sparked conversations in the digital marketing community about its broader implications.

This change has been particularly troublesome for third-party tracking tools that rely on consistent data to provide insights. With the parameter gone, questions arise about the accuracy of the data being fed to these tools, and how that, in turn, affects Google Ads reporting.

Impacts on Keyword Search Volumes

One of the primary concerns stemming from the removal of the num=100 parameter is whether it has inflated impression data across platforms. As Vanessa Fox pointed out in a discussion on Bluesky, there’s speculation that if Google Search Console (GSC) impressions were inflated, this could also impact the Google Ads keyword tool.

To gauge the impact, insights from the PPC community suggest that the consensus leans towards minimal to no significant effect on keyword tool search volumes for most users. A selection of responses from industry professionals highlights various experiences:

  • Account Stability: Many users reported no drastic changes in their PPC accounts, indicating stability in impressions and click-through rates (CTR).
  • Keyword Planner Impacts: Some believe the keyword planner may feel the effects eventually, particularly in terms of search volume accuracy.
  • Seasonality Considerations: A few users noted unusual fluctuations in impressions, suggesting that external factors like seasonality might be at play.

Community Reactions and Observations

Responses from industry experts regarding the changes have been varied yet insightful. Here are some notable observations:

Not seeing this in PPC accounts. Here is a chart of multiple accounts merged: pic.twitter.com/pTJXv4PUHr

— Joe (@theJoeShmow)

I would think this would impact the keyword planner before anything else.

— Drew Cannon (@Dcdigitalpro)

We have not seen that yet, nor would I expect it because Google Ads can still profit off that data.

— Zack Bowlby (@ROIAmplifiedCEO)

These comments reveal a range of experiences, from normal operational patterns to slight decreases in available impressions, suggesting that the impact may vary by account and campaign type.

Trends in Ad Performance Metrics

Despite the uncertainties surrounding data accuracy, some users have reported shifts in their performance metrics. For instance, one user noted an 8% decrease in available impressions week over week, combined with an improved CTR, which could indicate a higher percentage of human interactions versus bot activities.

This trend prompts a deeper look at the following metrics:

  • Impression Share: Evaluating whether your ad impressions are holding steady or declining can provide insights into your campaign's health.
  • Click-Through Rate (CTR): An increase in CTR, as seen in some accounts, may point to improved targeting or ad relevance.
  • Quality of Traffic: Observations of lower quality leads amidst reduced traffic highlight the importance of analyzing traffic sources and their effectiveness.

Exploring Alternatives for Data Verification

The shift away from the num=100 parameter raises questions about how accurately Google can filter out artificial data in comparison to methods used in Search Console. This concern is particularly relevant for advertisers who rely heavily on accurate impressions and clicks for their campaigns.

Given this situation, marketers are encouraged to explore alternative data verification methods, including:

  • Using Multiple Data Sources: Relying on a variety of analytics tools can provide a more comprehensive view of campaign performance.
  • A/B Testing: Implementing split tests can help ascertain the effectiveness of different ads and keywords.
  • Regular Audits: Conducting frequent audits of accounts can help identify anomalies or unexpected changes in performance metrics.

Future Considerations for Google Ads Users

As the landscape of digital advertising continues to evolve, it’s vital for marketers to stay informed about changes within platforms like Google Ads. The ongoing discussions around the impacts of the num=100 change serve as a reminder of the fragility of data in the digital space.

Marketers should remain proactive by:

  • Staying Updated: Keeping an eye on industry news and updates from Google regarding its advertising platforms.
  • Engaging with the Community: Participating in forums and discussions to share insights and strategies with peers.
  • Adapting Strategies: Being willing to adapt and innovate in response to changing data landscapes.

In a world where data-driven decisions are paramount, understanding the implications of changes in platforms like Google Ads will be essential for long-term success.

If you want to explore more stories like How Does Num=100 Change Affect Google Ads Reporting?, you can browse the Google Ads (AdWords) section.

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James Wirral

I am James Wirral, an SEO and SEM specialist for all major search engines, and my story began not in an office but behind the counter of my family's small bookshop. Watching local customers discover the titles they needed made me realise how powerful the right words and the right place could be. I taught myself the mechanics of search — from technical audits and schema to user intent and paid media — often late into the night, turning curiosity into craft. Over the years I have guided independent businesses and growing brands to consistent, measurable success, delivering double-digit organic growth and improving return on ad spend through honest, data-driven strategies. My work is grounded in evidence: careful testing, transparent reporting and a focus on long-term value rather than short-term tricks.What drives me is people. I remember a bakery owner who regained her customer base after a local search optimisation we carried out together, and a charity that reached donors they never knew existed thanks to a refocused content strategy. Those outcomes taught me that technical skills matter, but empathy and integrity make the difference. I publish practical guides, speak at industry events and mentor junior marketers so knowledge spreads beyond one campaign. Above all, I treat SEO and SEM as a promise to users and clients alike: to respect privacy, to prioritise relevance, and to build sustainable visibility that helps real people find what they need.

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