Google Search Ad Copy Builder

A full responsive search ad in one screen

A Google responsive search ad needs up to 15 headlines and 4 descriptions, each under a strict character limit, and Google mixes them on the fly. Writing all 19 lines by hand is tedious, so this builder generates the complete set from your brand, keyword, benefit, offer, and CTA — every line counted and trimmed to spec.

How it works

The tool composes headlines from proven RSA patterns — keyword-led, brand-plus-keyword, benefit, offer, and CTA variants — then trims each to Google’s 30-character limit, removes duplicates, and returns up to 15 unique lines. It builds four descriptions that combine your benefit, keyword, and offer into natural sentences capped at 90 characters. Every line shows a live count, turning red if anything exceeds the limit after editing. It also prints the exact keyword-insertion tag for your keyword so you can drop dynamic matching into a headline.

Tips and example

• Give a real benefit and offer — 24/7 fast response and £0 call-out fee produce far stronger headlines than generic adjectives.
• Keep brand names short; long brands eat into the 30-character headline budget.
• Use keyword insertion in one or two headlines only, with a sensible default, so the ad still reads well if the term is too long to insert.
• After copying, spot-check the auto-trimmed lines — a hard cut at 30 characters can clip a word, so reword for clarity.