The title tag is the HTML element naming a page. Google uses it as the headline in results, rewrites it more often than not, and it remains one of the few on-page elements with a direct, measurable effect on clicks.
What it does
Two jobs at once. It tells search engines what the page is about, and it’s the headline a human reads before deciding whether to click. Those pull in slightly different directions, which is why titles written purely for keywords tend to underperform titles written for people.
It lives in the document head as <title>, and it’s distinct from the H1 on the page, though many sites keep them similar. Google can and does use either when constructing what it displays.
Google rewrites most of them
This is the part people get wrong. Cyrus Shepard’s study at Zyppy found Google rewrote 61.6% of the titles it displayed, across nearly 81,000 titles on 2,370 sites.
Length was the strongest predictor. Titles of 51 to 60 characters were left alone most often, at roughly a 39% to 42% rewrite rate. Titles over 70 characters were rewritten almost every time, at 99.9%.
| Title length | Rewrite rate | Verdict |
|---|---|---|
| 51 to 60 characters | Around 39% to 42% | The sweet spot |
| Under 51 characters | Higher than the sweet spot | Google often adds context |
| Over 70 characters | About 99.9% | Assume it will be replaced |
When Google rewrites, it usually pulls from your H1, other on-page text, or anchor text pointing at the page. So your title is a strong suggestion, and staying near 55 characters is the most reliable way to have that suggestion accepted.
What the split tests show
SearchPilot runs genuine A/B tests on title changes with control groups, which makes their published results the most methodologically sound public data on this. Their tests have measured uplifts from adding the current month and year to titles, and from adding qualifiers like “the best”.
The caveat matters as much as the result: these are site-specific. A title formula that lifted traffic on one retailer’s templates is evidence that title changes can move traffic, not a formula to copy.
How to write one
- Lead with what they searched for. The first 30 characters do most of the work.
- Stay near 55 characters. Long enough to be specific, short enough to survive.
- Put the brand at the end, where truncation is harmless. Unless you’re a brand people search for by name, in which case the calculation changes.
- Make every title on the site different. Duplicates across templated pages weaken all of them.
- Write for the person scanning 10 results, not for a keyword density tool.
Common mistakes
- Keyword stuffing. Repeating the term 3 times reads as spam to humans and invites a rewrite.
- Duplicate titles across templates. Common on ecommerce and location pages.
- Leading with the brand. Spending the most visible characters on the thing the searcher already knows.
- Writing over 70 characters and expecting it to survive.
- Treating a rewrite as a bug. It’s feedback about relevance or length.
- Changing titles constantly. You need enough time to see an effect, and constant churn means never learning anything.
Related
Meta description for the text underneath. SERP for what surrounds both.