What a headline scorer actually does
A headline scorer takes a single line of copy, the headline that sits above your body copy, and checks it against a set of patterns that tend to separate headlines readers act on from headlines readers scroll past. It looks at length, at whether the promise is specific or vague, at whether the wording leans on tired filler, and at how easily the sentence reads on a first pass. It does not know your product or your market, so it cannot tell you whether the claim in the headline is true. What it can tell you is whether the sentence is built the way headlines that get read tend to be built.
You can run your own headline through the tool at Headline Scorer as you read this guide, and check each point below against something you have actually written rather than an example on a page.
Why the headline carries more weight than any other line
On a web page, the headline is usually the only line a reader sees before deciding whether to read on. Everything below it sits below the fold, the point on the screen where the reader has to scroll to see more, and a large share of visitors never scroll at all. That makes the headline the one piece of copy almost everyone reads and almost everything else the copy a smaller group reads. A weak headline does not get a second chance to make its case lower down the page, because a reader who has already moved on will not see the good line you wrote in paragraph three.
This is why a scoring tool is worth five minutes. The rest of the page can be well argued and still fail, if the one line doing the recruiting does not do its job.
What the tool is checking for
Length
A headline that runs long asks more of the reader's attention than most are willing to give on arrival, and a headline that runs very short often ends up vague because there was no room left to say anything specific. The scorer flags headlines that sit well outside a workable range, in either direction, so you can see whether length itself is the problem before you start rewriting words.
Specificity
"Great results for your business" and "Cut your invoice processing time by half" are the same length, but only one of them tells the reader what they are actually getting. The scorer checks for concrete nouns and numbers against generic claims, because a specific promise gives the reader something to picture and a generic one gives them nothing to hold on to.
Weak openings and filler words
Words like "innovative", "amazing" and "leading" do a lot of asking and very little telling. They ask the reader to be impressed without giving them a reason to be, and a reader who has seen the same words on twenty other pages has stopped noticing them. The scorer flags this kind of filler so you can replace it with something the reader can actually check against reality.
Readability
A headline with three subordinate clauses and a semicolon is a headline nobody reads twice, because a reader deciding whether to stay on your page is not proofreading it. The scorer checks sentence structure for the kind of complexity that slows a first read, in the same way the Readability and Clarity Checker does for longer copy.
The tool gives you a reading against these patterns. It can score a technically well formed headline that is still wrong for your reader, and it can undervalue a headline that breaks a pattern for a good reason. Treat the score as a prompt to look again.
The mistakes that lower a score, and why they matter
- Leading with the company name. "Acme Software: the future of invoicing" spends its first words on you, when the reader arrived wanting to know what changes for them.
- Stacking two claims into one headline. "Fast, affordable and reliable" reads as a list of adjectives, and a reader cannot picture three things at once as clearly as they can picture one.
- Using a power word without a claim behind it. A power word is a word chosen for its emotional pull, such as "proven" or "guaranteed", and it only earns its place if the sentence around it backs the claim up. Used on its own, it reads as a word doing a job the copy has not done.
- Writing the headline last, in a hurry. The headline is frequently the last thing written and the first thing read, which is the wrong order for the amount of attention it gets in the finished page.
A worked example
Take a single brief: a UK software company launching an invoicing tool for small businesses, writing the headline for its homepage.
| Version | Headline | Comment |
|---|---|---|
| Before | Innovative invoicing solutions for modern businesses | No number, no named problem, and two words ("innovative", "solutions") doing no work at all. |
| After | Send an invoice in under a minute, from your phone | Names the action, the constraint and the device. The reader can picture doing it. |
Run through the checks above, the second version passes on specificity and on readability, because it says one thing and says it plainly. Whether it is the right headline for that particular business still depends on whether sending invoices from a phone is actually the thing their customers care about most, which is a question no scoring tool can answer for you.
Using the scorer without following it blindly
The scorer is a check against known patterns. A headline can score well and still misrepresent what the product does, and a claim like that sits outside what any automated tool can catch: for the rules on what advertising claims need to be true and substantiated, see the UK Advertising Rules for Copywriters guide. Use the score to catch the mechanical problems, length, vagueness, filler, and then read the headline aloud to check the part no tool can check, whether it actually says something a customer would stop scrolling for.
Run a few versions of the same headline through the Headline Scorer and compare the scores side by side. The differences between versions usually tell you more than any single score on its own.