Ad Copy Generator

Check every headline against the character limit

The most useful thing on this page, because the tool does not count characters for you and a headline that is one character too long simply cannot be used.

Google Ads is the strict one. A responsive search ad takes headlines of 30 characters each and descriptions of 90 characters each — and those are hard limits, not guidelines. The field will not accept more. Thirty characters is shorter than it sounds: "Free Shipping On All Orders" is 27, and you have used most of your room.

The other platforms are softer but still matter:

Facebook and Instagram — the primary text truncates at roughly 125 characters before "See more", and the headline shows about 40. Nothing is rejected for being longer; it is just not read.

LinkedIn — the intro text truncates around 150 characters on desktop and less on mobile.

Twitter/X — the post limit applies, and short performs better than long regardless.

So generate, then count. Paste each headline somewhere that shows you a character count before you paste it into the ad platform, and rewrite anything over the limit rather than letting the platform truncate it for you — because where it cuts is not where you would have cut.

Google Ads wants many headlines, not one perfect one

Worth knowing because it changes what you are asking the tool for.

A responsive search ad takes up to 15 headlines and 4 descriptions, and Google assembles combinations of them and learns which perform. So the job is not to write one great headline — it is to supply a varied set. Headlines that all say the same thing in slightly different words give the system nothing to work with.

Aim for genuinely different angles: one leading on price, one on speed, one on a guarantee, one on the specific problem being solved, one that simply names the product plainly. Generate a batch here and keep the ones that differ from each other rather than the ones that sound best individually.

The same logic applies to Meta, where several variants let the system optimise rather than forcing you to guess.

Fill in the selling point properly — it is the field that matters

The unique selling point is where this tool gets its material, and a vague answer produces generic copy no amount of tone adjustment will fix.

Specific beats impressive. "50% off the first month" is usable; "great value" is not. "Delivered in 48 hours" is usable; "fast service" is not. "Used by 12,000 dentists" is usable; "trusted by professionals" is not. If you give it a number, a timeframe, a guarantee or a named constraint, it has something to build a headline around. If you give it an adjective, you get adjectives back.

Target audience changes the vocabulary and the assumed knowledge — the same product sold to first-time buyers and to trade customers should not use the same words. Campaign goal changes what the copy asks for, and it should match the page you are sending people to: copy that says "book a demo" landing on a pricing page is a mismatch that costs you the click you paid for.

Choosing the tone

Six tones, and the defaults are worth overriding more often than not.

Inspiring is the default and suits brand-led advertising. Professional is right for B2B, high-consideration purchases and anything where trust is the barrier. Bold suits a genuinely differentiated product. Emotional works where the purchase is personal rather than practical.

Urgent earns a caution. It works — deadlines and scarcity do move people — but only when the urgency is real. "Offer ends Friday" on an offer that never ends is the kind of thing that erodes trust and, in several jurisdictions, breaks advertising rules on false scarcity. Use it for an actual deadline.

Humorous is the highest-variance option. When it lands it outperforms everything; when it misses it reads as trying. It also dates quickly and travels badly across cultures, which matters if the campaign runs in more than one market.

What it cannot tell you

Two honest limits, and the second is the important one.

It has no data. It does not know your search volumes, your competitors' ads, your historical click-through rates or what your keywords cost. Those live in the ad platform itself and in keyword research tools, and the copy should be informed by them.

And in advertising, testing beats judgement — including ours and yours. Nobody reliably predicts which headline wins; the whole architecture of modern ad platforms exists because they do not. So the right use of a generator is to produce a varied set cheaply, put several into the campaign, and let the results decide. Picking your single favourite and running only that is the expensive way to find out you were wrong.

One more thing to do yourself: check the claims. Generated copy will happily write "the best" or "guaranteed" or a specific percentage you never gave it. Ad platforms reject unsubstantiated superlatives, and regulators take a dimmer view still.

Unlike the file tools on ToolsHall, this one sends your input to a language model rather than running in your browser. No account, and no limit beyond 30 runs an hour.

Related tools

Meta Description Generator writes the description for the landing page, with a preview of how it appears as a search result. Product Description Writer handles the product page the ad points at, and Slogan Generator is for a line that has to work across a whole brand rather than one campaign.