Why where the keyword sits matters more than how often
Old-school SEO obsessed over keyword density, the raw percentage of times a phrase appeared on a page. That metric is largely dead. What still matters, and what this tool checks, is keyword placement: whether your target phrase shows up in the handful of locations search engines weight most heavily. A page can mention a keyword twenty times in the body and still send a weak relevance signal if the phrase is missing from the title, the H1, and the opening lines.
You give the tool a page and a target keyword, and it checks the six positions that carry the most weight: the title tag, the H1, the URL, the meta description, the subheadings (H2 to H6), and the first 100 words of the body. The result is a placement scorecard that tells you, at a glance, whether your most important page is actually optimized for the phrase you are trying to rank for, or only accidentally related to it.
The six placements and what each one signals
The title tag is the single most important on-page signal for relevance and the text searchers read first in the result, so the keyword belongs there, ideally near the front. The H1 confirms the page's main topic to both readers and crawlers; when the title and H1 agree on the keyword, the signal is unambiguous. The URL slug is a smaller but real signal and a credibility cue in the search snippet, which is why a clean, keyword-bearing slug beats a string of numbers.
The meta description does not directly affect rankings, but the keyword appearing there gets bolded in the search result and lifts click-through, which indirectly helps. Subheadings let you place keyword variations naturally and map your page to the sub-questions people ask. And the first 100 words matter because both readers and search engines treat the opening as a statement of what the page is about; a keyword that does not appear until paragraph nine reads as an afterthought.
What this checker actually does
It fetches the page, extracts the title, H1, URL, meta description, all subheadings, and the first 100 words of the main text, then tests each one for the presence of your target keyword. It reports a clear present-or-absent verdict for every position so you can see exactly which signals are firing and which are missing, rather than guessing from a single overall grade.
Good matching is more forgiving than an exact-string search. The tool is built to recognize the keyword when word order varies slightly or when a stop word sits between the terms, because "best running shoes" and "best shoes for running" are the same intent to a search engine. The aim is to mirror how Google reads a page, not to punish you for natural phrasing that a literal string match would miss.
How to read your placement scorecard
Treat the title, H1, and first 100 words as the must-haves. If the keyword is missing from any of those three, fix that before anything else, because they carry the most weight and are the most visible to both searchers and crawlers. A page that nails all three already sends a strong, coherent relevance signal even if the others are imperfect.
The URL, meta description, and subheadings are strong supporting signals rather than dealbreakers. A keyword in the URL is great but not worth changing an established, well-linked URL for, since changing URLs carries its own risk. The meta description should include the phrase to win the bold in the snippet. At least one subheading carrying the keyword or a close variation helps, but every subheading repeating it is a warning sign, not a win.
The line between placement and stuffing
The goal is presence in the right places, not saturation. Forcing the exact keyword into all six positions, plus every paragraph, produces text that reads like a robot wrote it and trips Google's keyword stuffing detection. A title like "Running Shoes Buy Running Shoes Best Running Shoes" hurts more than it helps. Place the phrase once, naturally, in each key position and let variations and synonyms carry the rest.
Search engines understand synonyms and related concepts far better than they did a decade ago. "Affordable", "budget", and "cheap" all map to the same intent, and covering the surrounding entities of a topic now matters as much as the exact phrase. Use this checker to confirm the core keyword is present where it counts, then write for humans everywhere else; that combination satisfies both the placement signal and the modern relevance models layered on top of it.
Picking the right keyword to check in the first place
Placement only helps if you are placing the right phrase, and this is where many checks go wrong before they start. The keyword should match real search intent and sit at a difficulty you can plausibly compete for. Testing a single-word head term like "shoes" on a small site is a waste of effort; testing the longer, more specific phrase your page actually answers, the kind real people type, is where placement pays off.
One page should target one primary keyword and a small cluster of close variations, not a dozen unrelated phrases. If you find yourself wanting strong placement for two genuinely different intents on the same URL, that is usually a sign the topics deserve two pages. Run this checker once per primary keyword per page, and use the results to confirm each page owns one clear intent rather than straddling several. A focused page with the keyword in the right spots beats a sprawling page that mentions everything and ranks for nothing.
It is also worth checking the keyword you assumed against the page you actually wrote. Content drifts during editing, and a page that started life targeting one phrase often ends up about something adjacent. If the keyword is missing from the title, H1, and opening not because you forgot it but because the page is genuinely about a different topic, the fix is to realign the target, not to wedge the old phrase back in.
Common placement mistakes
The most common is a clever title that buries the keyword. Marketers love a witty headline, but if the searcher cannot tell the page is about their query from the title, the click and the ranking both suffer. Lead with the keyword, then add the personality. A close second is the H1 that drifts from the title: when the two disagree on the topic, you split the signal.
Another frequent miss is the slow opening. Pages that begin with a long anecdote or a throat-clearing introduction often do not name the topic until far down the page, so the keyword is absent from the first 100 words where it matters most. State what the page is about in the opening sentence. Finally, watch for templated pages that hard-code one keyword into the title across many URLs; at scale this produces pages that are technically optimized for a phrase that does not match their actual content.
Over-optimization is its own mistake, and it tends to come from treating this checker as a set of boxes to fill rather than a diagnostic. Forcing the exact keyword into the URL of an established page, repeating it in every single subheading, and bolding it throughout the body does not strengthen the signal; it weakens trust and reads as manipulation to both readers and modern ranking models. The strongest pages place the phrase deliberately in the positions that matter and then sound completely natural everywhere else, which is the opposite of how a keyword-stuffed page reads.
Keyword placement in the age of AI search
AI engines do not count keywords, but placement still helps them. A title, H1, and opening that clearly name the topic make it easy for a model to decide that your page answers a given question and to retrieve the right passage. The first 100 words double as the chunk most likely to be lifted into an AI Overview or chat answer, so leading with the keyword and a direct statement of the answer serves both classic ranking and modern citation at once.
The broader shift is from matching strings to matching meaning. Placement gets the core phrase into the positions that anchor a page to a topic; entity coverage, clear structure, and a direct answer near the top do the rest. Think of this checker as confirming the foundation is in place, the unmistakable signal of what the page is about, on top of which genuinely useful content earns the ranking and the citation.
What to do after you run it
Close the must-have gaps first. If the keyword is missing from the title, H1, or first 100 words, edit those now, keeping the phrasing natural. Add it to the meta description to win the snippet bold, and work it or a close variation into at least one subheading where it fits. Leave the URL alone unless the page is new, since changing established URLs risks more than it gains.
Then step back and make sure the page actually deserves to rank for the phrase. Placement opens the door; depth, structure, and a clear answer walk through it. Re-run this checker to confirm the key positions now carry the keyword, and pair it with a heading structure check and a SERP preview to see how the optimized title and description will read in the real search result.