Keyword Density Is Dead, but Term Frequency Still Matters
The 2-3% keyword density rule is a relic. But there's a real signal underneath it that ecommerce content still has to get right. Here's the modern playbook.
If you've worked in SEO for more than a year, you've heard the rule: 2-3% keyword density. Use your target keyword 2-3 times per 100 words, no more, no less.
This is wrong. It was already wrong by 2010. Google has explicitly said density is not a ranking factor, and in 2026 the modern ranking systems use language models that understand context and meaning rather than counting tokens.
And yet — the underlying intuition wasn't completely wrong. There is a real signal underneath the wrong rule, and ecommerce content has to get it right. Let's separate what's dead from what isn't.
What's Dead: Density Targets
Stop optimizing for density numbers. There is no number that helps you and there are several that hurt you:
- Keyword stuffing penalties still apply. Pages that repeat the target phrase 15+ times in a 500-word product description trigger Google's spam detection.
- Bad UX. Density-targeted copy reads like a robot wrote it. Customers don't convert on robotic copy.
- Wasted authority. Rather than working a long-tail variant or related concept into a paragraph, the writer is forced to repeat the head term, wasting the chance to rank for related queries.
If a tool tells you your page needs 0.7% more keyword density to compete, ignore it. The tool is wrong.
What's Alive: Term Frequency in Context
Here's what does still matter, and what the density rule was awkwardly approximating:
1. Use the target term enough that the topic is unambiguous
If you're writing a product description for a "merino wool base layer," you can't use the phrase "merino wool" zero times. The page won't rank for "merino wool base layer" if the phrase doesn't appear at all — Google needs to know what the page is about. Use it naturally. Once in the title, once in H1, once or twice in the body, and the topic is unambiguous.
2. Place the term in structurally important locations
This is where keyword density tools get it half right. The location matters more than the count:
- Title tag — most important location
- H1 — second most important
- First 100 words of body — Google weights this heavily
- Meta description — affects CTR, not ranking, but still matters
- Image alt text — for image search
- URL slug — minor signal but always present
3. Use related entities and synonyms (LSI is dead but co-occurrence isn't)
Modern ranking systems understand that "running shoes," "trainers," "joggers" (in some markets), and "athletic footwear" can refer to the same thing. They also know that pages about running shoes typically discuss "drop," "stack height," "midsole," "carbon plate." Pages that include these related concepts signal topical depth. Pages that hammer the same phrase 10 times signal the opposite.
4. Match the surface form to user intent
If users search for "best running shoes for flat feet," your H1 should not be a contorted "Running Shoes — Flat Feet Edition." It should be "The Best Running Shoes for Flat Feet" — match the intent, match the surface phrase. Density doesn't matter; user-language match does.
The Practical Audit
Run this on every important page (homepage, top 20 collections, top 50 products):
- What's the primary keyword? Define one — not seven.
- Does it appear in the title, H1, and first paragraph? If not, fix that first.
- Is it referenced naturally 2-5 times in body content? Not 0, not 20.
- Are 5-10 related concepts also covered? Synonyms, related entities, parent/child topics.
- Does the page actually answer the query the keyword represents? If not, you have a content problem, not an SEO problem.
Where Density Tools Are Still Useful
Density analysis still has one legitimate use: finding accidentally over-stuffed copy. Some product description templates and AI-generated content end up with the same phrase repeating 5-10 times in 200 words because the template has it baked in. A density check surfaces this fast — anything above 4-5% on a single phrase is usually a bug, not a strategy.
StoreVitals' free Keyword Density Analyzer shows top single keywords plus 2-word and 3-word phrases for any page, with placement signals (in title, H1, H2, meta description). Use it to spot over-stuffed copy and to verify that your target phrase actually appears in structurally important spots — not to chase a density target. The signals matter; the percentage doesn't.