Google Ads Preview Tool
Preview your Google Responsive Search Ads before publishing. See how headlines, descriptions and display URLs appear on desktop and mobile. Enforces Google character limits.
The Google Ads Preview Tool lets you see exactly how your Responsive Search Ad will appear in Google Search results before you spend a single penny of budget. Enter your headlines, descriptions, and display URL, and the tool renders a pixel-accurate SERP mockup in both desktop and mobile views — so you can catch awkward truncation, weak copy, or missing calls-to-action before your campaign goes live.
Google Responsive Search Ads (RSAs) allow up to 15 headlines (30 characters each) and 4 descriptions (90 characters each). Google's machine learning then selects the best combination of up to 3 headlines and 2 descriptions for each auction. This tool enforces those exact limits: character counters turn red when you exceed a field's limit, and a warning banner reminds you that over-limit copy will be disapproved by Google before it ever reaches a searcher.
The display URL preview automatically extracts your domain from the Final URL field and lets you add up to two path fields (15 characters each) that appear as breadcrumbs after your domain — for example, example.com › products › sale. This helps signal relevance to searchers even before they click.
The Ad Strength meter scores your ad from Poor to Excellent based on how many headlines and descriptions you have filled in. A higher variety of unique messages gives Google's algorithm more to work with, leading to better auction performance. The tool gives you concrete guidance on what to add to reach each strength level.
When your ad is ready, the "Copy Ad Text" button exports all your headlines, descriptions, final URL, and display paths as a clean formatted text block — ready to paste directly into the Google Ads editor or share with a client for approval. No account is needed and nothing you type is ever sent to a server.
Frequently Asked Questions
- What is a Responsive Search Ad and how does the preview work?
A Responsive Search Ad (RSA) is Google\
- Why does my headline show a red counter?
Google enforces a 30-character limit per headline and a 90-character limit per description. If your text exceeds the limit, the counter turns red. Google will not serve ads with over-limit copy — you must shorten the highlighted fields before uploading your ad to Google Ads.
- What are display URL paths and how long can they be?
The display URL is what searchers see in the green text under your headline — it shows your domain plus up to two optional path fields separated by slashes. Each path can be up to 15 characters. For example: myshop.com › running › shoes. Paths do not need to match real pages on your site; they are purely for display relevance.
- How is Ad Strength calculated?
This tool calculates a simplified Ad Strength score based on the number of headlines and descriptions you have filled in. It is a rough guide to help you provide enough variation for Google to optimise. The actual Ad Strength in your Google Ads account also considers keyword relevance, uniqueness of messages, and other factors this preview tool does not have access to.
- Can I use this to preview ads for clients before they go live?
Yes. Fill in the ad copy, switch between desktop and mobile views to check both layouts, then use the