Keyword density is how often a keyword appears compared with the total words. Years ago, people aimed for a set percentage. Today, search engines understand topics and synonyms, and stuffing keywords harms you.
What matters instead
- The main keyword in the title, H1 and first paragraph.
- Related words and questions that a complete answer naturally includes.
- Readable text written for people.
When to check density
Use the keyword density checker to catch problems: a keyword repeated so often it reads badly, or a page that never mentions what it is meant to be about.
Related terms matter more
A page about RO purifiers naturally mentions membranes, filters, TDS, storage tanks, installation and maintenance. Covering these related ideas tells search engines the page is thorough, much more than repeating "RO purifier".
Where to place the main keyword
- Title tag.
- H1.
- The first paragraph.
- One or two subheadings where it fits.
- Image alt text where it describes the image.
- The URL.
Signs of stuffing
- The same phrase in every sentence.
- Lists of keywords at the bottom of the page.
- Awkward phrases like "best ro purifier india cheap price" written into sentences.
These read badly, put customers off and can trigger spam filters. Write naturally and let the topic guide your words.
A quick test
Read the page aloud. If the keyword sounds forced, use it less.
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