Keyword Density Checker

What keyword density measures

Keyword density is simply how often a word or phrase appears in a piece of writing, expressed as a percentage of the total word count. Say a keyword shows up 12 times in a 1,200-word article: that is a density of 1%.

This checker counts single words, two-word phrases and three-word phrases, filters out common filler words like "the" and "and", and ranks what is left so you can see at a glance what your page is actually about.

Is keyword density still an SEO ranking factor?

Not as a formula. Search engines stopped rewarding a specific percentage many years ago and now judge relevance from meaning, related terms and how well a page answers the query. Google has said publicly there is no ideal keyword density.

It is still a useful diagnostic. If your target phrase appears once in 2,000 words, the page probably reads as being about something else. If it appears forty times, the copy reads badly to humans and risks looking manipulative. The number is a smoke alarm, not a target.

A sensible range to aim for

For most pages a main keyword landing somewhere around 0.5% to 2.5% happens naturally when the writing is genuinely on topic. Rather than editing toward a number, write the page properly and then check that the top of the list looks like the subject you intended.

Pay more attention to the two- and three-word phrase views. Those reveal whether you are hitting the phrases people actually search — "free dns lookup tool" rather than a scattering of the individual words.

Where the keyword should appear

Placement matters more than frequency. The title tag, the H1, the first hundred words, at least one subheading, the URL slug, the meta description and any image alt text carry far more weight than the tenth mention in the middle of a paragraph.

Cover the surrounding vocabulary too. A page about a hash generator should naturally mention SHA-256, checksum and digest. That related language is what modern search engines use to confirm the page really covers the topic.

Signs of keyword stuffing

Repeating a phrase in a way that breaks grammar, listing city names in a block at the bottom of a page, hiding text in the same colour as the background, or padding a page with near-identical sentences all count as stuffing and are explicitly against search engine guidelines.

The reliable test is to read the paragraph aloud. If you would not say it that way to a customer, cut the repetition and replace it with a synonym or a pronoun.

A practical workflow

Draft the page without thinking about density. Paste it here and read the top ten single words and the top phrases. Confirm that your intended topic is in the top three; if it is not, the page needs an editorial fix rather than word swapping.

Then check the competition: run the same analysis on a page already ranking for your term and compare which phrases they cover that you have missed. That gap is usually worth more traffic than any percentage adjustment.

Privacy

The analysis runs entirely in your browser. Unpublished drafts, client copy and internal documents are never uploaded anywhere, which is not something every online SEO checker can claim.

Why there is no magic percentage

Older SEO advice fixed on figures like 'use your keyword 2.5% of the time'. Modern search engines do not work that way: they evaluate whether a page covers a topic well, using far more signals than raw repetition. Pages ranking for competitive terms often show densities anywhere from under half a percent to several percent — the spread itself is the proof that no target number exists.

What density is genuinely good at is spotting the two failure modes at the extremes. A target phrase that appears zero times means the page is probably not about what you think it is about. A phrase repeated mechanically in every paragraph reads badly to humans and can trip spam signals. Density analysis catches both quickly; everything in between is an editorial judgement, not a formula.

Reading the results like an editor

Start with the single-word list, but do not judge it too harshly — function words aside, it shows your page's vocabulary. The phrase list is where the insight lives: it reveals what the page is actually about, as opposed to what you intended. When those differ, the phrases win, because they are what a search engine sees.

Look next for the supporting terms a thorough page on your topic would naturally include. A page about keyword density that never mentions 'search intent' or 'title tag' is probably shallow. This is the check's real value: not counting what you wrote, but revealing what you forgot to write.

Where density fits in a real optimisation pass

A sensible order is: confirm the page answers the searcher's question better than current results, structure it with clear headings, write a title and description that earn the click — and then run a density check as a final sanity pass. Used last, it catches drift. Used first, it tempts you into writing for a counter instead of a reader.

Pair this tool with the meta tag generator for the search-facing elements and the word counter when a brief specifies a length. Together they cover the mechanical checks, leaving you free to spend your effort on the part that actually ranks: being genuinely useful.