Ad copy generator — headline and description drafts with a character check

How to use the ad copy generator

1. Enter the Product or service and the Main benefit (what the customer gets). Both are required.
2. Add the Audience and a Call to action.
3. Optionally add A concrete feature or fact you can back up and an Offer.
4. Pick a Platform: Google responsive search ad, Facebook / Instagram feed ad, LinkedIn single-image ad or X post.
5. Read the table. Each line shows its character count and “Fits” or “Over by N — shorten”. Copy the lines you want from Copy only, or download the table as CSV.

What it does and when to use it

Writing ads is mostly rewriting to fit a box. This tool gives you a set of first drafts in the right shape so you can spend your time choosing and trimming instead of counting letters.

For Google, Meta and LinkedIn it builds up to seven headlines (the product name, the benefit, “Product: benefit”, “For audience”, “CTA — Product”, the offer and the feature) and three descriptions. Duplicates are removed and empty optional fields are skipped. For X it builds three posts from the description patterns.

The drafts are a starting point, not finished ads. Keep the facts in sync with your landing page copy, use the longer sales copy generator for emails and sales pages, and tag each ad’s link with the UTM builder so you can see which one worked.

How it works

Each draft is counted in Unicode characters and compared with the platform figure:

If any line is over, the note under the table says how many. All of this happens in your browser.

Worked examples

Bookshop on Google. The sample (Fern & Fable Books, “get hand-picked books in two days”) gives six headlines. “Fern & Fable Books” fits at 18/30, but Get hand-picked books in two days is 33/30 — Over by 3 — shorten. Five of the nine lines are over, which tells you the benefit phrase is too long for Google.

Yoga studio on Meta. With the benefit “sleep better after a calm evening class”, the headline version is 39/27, Over by 12 — shorten, and “Hillside Yoga: sleep better…” is 54/27; short headlines such as “First class free” fit. All three descriptions fit within 150.

The same bookshop on X. Three posts of 96, 82 and 107 characters, all well under 280.

Limits and tips

• Ad platforms review ads under their own policies. Add only claims you can prove, and check the current rules before publishing.
• Double-width scripts such as Chinese, Japanese and Korean count as 2 characters on Google and X; this tool counts them as 1.
• A shorter benefit phrase improves every pattern at once.