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Optimising Google Ads Ads and Landing Pages: RSAs, Testing and Metadata

A higher bid never makes up for a weak ad. In Google Ads, the quality of your ad and landing page determines whether your ad can show, its position and how much you pay per click (About ad quality, Google FAQ).

This article is the practical follow-up to our article on Quality Score (Google Ads Quality Score (in French)). It explains how to structure a responsive search ad, how to read headline reports, how to test click-through rate, calls to action, branding and product information, and how to optimise the landing page and its metadata. Every point is sourced from Google’s official documentation.

What Google evaluates: ad quality

Ad Rank is calculated at every auction from several factors: your bid, the competition, the context of the search and, in particular, the quality of your ads and landing page (About Ad Rank, Google FAQ).

Quality Score, rated from 1 to 10, summarises that quality through three components: expected click-through rate, ad relevance and landing page experience (About Quality Score for Search campaigns, Google FAQ). Google adds that it is a diagnostic tool: the score itself is not an input in the auction, unlike the quality it measures (About ad quality, Google FAQ).

Optimising ads and pages is therefore not about « raising a score », but about improving what the score describes.

The expected structure of a responsive search ad

The basic rules

A responsive search ad (RSA) accepts up to 15 headlines and 4 descriptions, with a minimum of 3 headlines and 2 descriptions. A headline holds up to 30 characters, a description 90, and each URL path 15 (About responsive search ads, Google FAQ).

Google assembles the combinations itself. Headline 1 and description 1 usually show; headlines 2 and 3 are not guaranteed (About responsive search ads, Google FAQ). Google recommends providing at least 8–10 headlines (Create effective responsive search ads, Google FAQ), as different as possible, and writing the first three as if they will appear together.

Pin sparingly

Pinning forces a headline into one position. Google advises against it for most advertisers, because it reduces the number of possible combinations and can lower Ad Strength (About responsive search ads, Google FAQ). If a mention is essential (brand, legal notice), pin one or two headlines only and let the rest rotate freely (About Ad Strength for responsive search ads, Google FAQ).

Ad Strength: a guide, not an auction score

Ad Strength ranges from « Incomplete » to « Excellent ». It improves with more headlines and descriptions, more unique headlines and popular keywords, each keyword fitting entirely within one headline. But Google is clear: it does not determine whether an ad is eligible to serve and is not used in Ad Rank or Quality Score (About Ad Strength for responsive search ads, Google FAQ). It is a writing guide, not a goal in itself.

Headlines structured by role

To keep combinations coherent and tests readable, experience across accounts suggests splitting the 15 headlines by role:

The four descriptions follow the same logic: one on the main benefit, one on the offer or product, one on reassurance, one ending with a call to action.

Reading headline reports: assets and combinations

The asset report

In the ads list, click « View asset details » under the responsive search ad. The report details every headline and description, with a pinning column (About the ad-level asset report for responsive search ads, Google FAQ).

Since 5 June 2025, the report shows real statistics per asset: impressions, clicks, conversions, conversion value and cost. The old performance label (« Best », « Good », « Low ») has been retired (About the ad-level asset report for responsive search ads, Google FAQ).

Two precautions, from Google itself:

  • ratios per asset (CTR, CPC, CPA, ROAS) are directional indicators only, because a headline always shows alongside others;
  • asset statistics are not summable: their total does not match the ad’s totals. Judge performance at ad or campaign level.

The combinations report

In the asset details, the « Combinations » tab shows the headline and description combinations shown most often. Google warns not to use it to recreate static ads: they are not guaranteed to perform the same way (About the combinations report for responsive search ads, Google FAQ).

How to interpret

The first signal is a headline’s share of impressions: Google serves the assets that work more often. A headline still at very few impressions after several weeks is a candidate for replacement. Clicks and conversions per headline then confirm the trend.

Testing: CTR, call to action, brand and product information

Google suggests testing different headlines and calls to action, or including certain keywords and the brand (Optimize your ads and landing pages, Google FAQ). To keep these tests readable:

  1. One role at a time: for example, replace two call-to-action headlines and leave the rest.
  2. Judge at ad level: the ad’s CTR and conversion rate are reliable; an asset’s are indicative.
  3. Let enough impressions build up before concluding, and note the date of the change.

The four most useful tests

  • Click-through rate: Google recommends making the offer more compelling and highlighting a unique benefit (5 ways to use Quality Score to improve your performance, Google FAQ). Compare a product-focused headline with a benefit-focused one.
  • Call to action: Google lists « Buy, Sell, Order, Browse, Find, Sign up, Try, Get a Quote » (5 ways to use Quality Score to improve your performance, Google FAQ). Test a direct call against a more engaging one, e.g. « Get a quote » against « Get my free quote in 24 hours ».
  • Brand: a headline with the brand name builds trust on generic searches but takes space. Test it pinned in position 1 against free rotation.
  • Product information: price, feature, delivery time or availability. Precise information filters out low-quality clicks: CTR may drop while conversion rate rises.

The landing page

Landing page experience is one of the three Quality Score components. Google recommends (5 ways to use Quality Score to improve your performance, Google FAQ):

  • giving people what they are looking for: the page must answer the search and the ad;
  • keeping messaging consistent from ad to landing page;
  • a mobile-friendly page;
  • fast loading: according to Google, speed can be the difference between a bounce and a sale.

Google adds (Optimize your ads and landing pages, Google FAQ):

  • choose a page that closely matches the ad and keywords, and mirrors the ad’s call to action;
  • be clear about the product or service and what it does;
  • put important information towards the top of the page;
  • make the desired action quick and easy, and make it easy to get in touch on mobile.

Note: Google states that conversion rate does not affect landing page experience status (5 ways to use Quality Score to improve your performance, Google FAQ). It is nonetheless the best metric for judging your page tests.

The essential page metadata

Metadata belongs to organic search more than to Google Ads: it determines how the page appears in search results. But a well-built landing page serves both channels. These are the ones Google Search Central documents:

  • The <title> element: every page needs one, descriptive and concise, with no text repeated across pages, and the brand at the start or end. Google may rewrite the displayed title using the <title>, the H1 heading or og:title (Influencing Title Links in Google Search, Google Search Central documentation).
  • The meta description: unique per page, it summarises the content. Google sometimes uses it for the snippet when it describes the page better than the content itself. There is no length limit, but the snippet is truncated when displayed (How to Write Meta Descriptions, Google Search Central documentation).
  • The H1 heading: Google recommends putting the title text in the first visible H1 of the page (Influencing Title Links in Google Search, Google Search Central documentation), and using headings to help users navigate (SEO Starter Guide: The Basics, Google Search Central documentation).
  • The viewport tag: its presence tells Google the page is mobile-friendly (Meta Tags and Attributes that Google Supports, Google Search Central documentation).
  • The robots tag: by default a page is indexable and its links followed. Check that no « noindex » blocks a page that should be found (Meta Tags and Attributes that Google Supports, Google Search Central documentation).
  • The canonical tag: if you cannot redirect, the rel= »canonical » element indicates the reference version of a page (SEO Starter Guide: The Basics, Google Search Central documentation).
  • Structured data: it describes the content (product, reviews, breadcrumbs) and can enrich how the page appears in results (SEO Starter Guide: The Basics, Google Search Central documentation).

And a myth to drop: according to Google, the meta keywords tag has no effect on indexing or ranking at all (Meta Tags and Attributes that Google Supports, Google Search Central documentation).

The checklist

  • 8 to 15 headlines per ad, split by role: relevance, benefit, call to action, brand, offer.
  • One or two pinned headlines at most.
  • Ad Strength as a writing guide, not a goal.
  • The asset report read by impressions first, then clicks and conversions.
  • One role tested at a time, judged at ad level.
  • A landing page consistent with the ad, fast, mobile-friendly, with the action at the top.
  • A unique <title>, meta description and H1, a viewport tag, no accidental noindex.

Conclusion

The quality of your ad and landing page directly affects whether your ads show, their position and the cost of your clicks. A responsive search ad structured by role, readable tests and a consistent landing page are worth more than a higher bid.

For the diagnosis behind this method, read Google Ads Quality Score (in French), and Mobile Traffic Eating Your Budget? Portfolio Bidding, Max CPC and Value Rules.

Google sources checked on 27 October 2026. Interfaces change often: check the links before applying.

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