You use keywords by placing them strategically in specific parts of your webpage, including the title, headings, URL, body text, and image descriptions. The goal is to signal to search engines what your page is about while keeping the content natural and useful for readers. Getting this right means more visibility in search results without triggering penalties for overuse.
Where to Place Your Primary Keyword
Your primary keyword is the main phrase you want to rank for. It belongs in several specific locations on your page, each one sending a signal to search engines about your topic.
Title tag: This is the clickable headline that appears in search results and in the browser tab. Keep it under 55 to 60 characters and include your primary keyword as close to the beginning as possible. A title like “How to Use Keywords in Your Content” is clear and direct. A title stuffed with variations like “Keywords, Keyword Use, Using Keywords for SEO” will hurt you.
H1 heading: Your page should have exactly one H1 tag, which is the main visible headline on the page itself. Include your primary keyword here naturally.
First 100 words: Work your keyword into the opening paragraph. Search engines pay close attention to what appears early on the page, and readers want confirmation they’ve found what they searched for.
URL: Use a short, readable URL with your keyword separated by hyphens. Something like yoursite.com/how-to-use-keywords is far better than yoursite.com/post?id=48372.
Subheadings: Use your keyword or a close variation in some of your H2 headings, but not all of them. If every subheading on your page repeats the same phrase, it reads as forced to both readers and search engines.
Body content: Aim for roughly 1 to 2 percent keyword density, which works out to about once every 100 to 150 words. This isn’t a hard rule you need to count precisely. It’s a guideline to keep you in the range where search engines recognize your topic without flagging you for overuse.
How to Use Secondary Keywords
Secondary keywords are synonyms, related phrases, and longer variations of your primary keyword. If your primary keyword is “use keywords,” secondary keywords might include “keyword placement,” “SEO keyword strategy,” or “how to add keywords to a webpage.” These help your page rank for multiple search queries instead of just one.
Sprinkle secondary keywords throughout your body text, subheadings, and meta description. They serve two purposes: they give search engines more context about your topic, and they keep your writing from sounding repetitive. Instead of forcing “use keywords” into every paragraph, you can naturally alternate with phrases like “keyword placement” or “where to put your target phrase.” Related terms that aren’t direct synonyms but connect to your topic (like “search engine optimization” or “organic traffic”) also help search engines understand the full scope of what you’re covering.
Match Your Keywords to Search Intent
The way you use keywords should change depending on what the searcher actually wants. Search intent falls into a few broad categories, and each one calls for different content.
When someone searches with words like “what,” “how,” “who,” or “why,” they have informational intent. They want to learn something. Your content should be structured as a guide, tutorial, or explainer. The keywords you target should reflect questions and learning-oriented phrases.
When someone searches with words like “best,” “buy,” “near me,” or a specific product name, they have transactional intent. They’re ready to take action. Your content should be structured as a product page, comparison, or review, and your keywords should include those action-oriented modifiers.
Before you write, search your target keyword in Google and study what’s already ranking. If the top results are all listicles, write a listicle. If they’re all how-to guides, write a how-to guide. The format, structure, and tone of top-ranking pages tell you what Google believes searchers want. Think of each subheading as a mini-article addressing a specific question or problem your reader expects answered on that page.
Using Keywords in Images and Metadata
Keywords belong in a few behind-the-scenes elements that many people overlook.
Image file names: Before uploading an image, rename the file to something descriptive with hyphens between words. A file named “keyword-placement-checklist.jpg” is more useful to search engines than “IMG_4839.jpg.”
Image alt text: Alt text is the description that appears if an image fails to load, and it’s what screen readers use for visually impaired users. Write alt text that genuinely describes the image and includes your keyword when it fits naturally. For a screenshot of a keyword research tool, “keyword research tool showing search volume data” works well. Don’t stuff keywords into alt text for every image on your page, and leave alt text blank for purely decorative images that don’t convey meaningful content.
Meta description: This is the short summary that appears below your title in search results. Keep it under 155 characters and include your primary keyword. While Google has said meta descriptions aren’t a direct ranking factor, a well-written description with relevant keywords increases your click-through rate, which can improve your rankings over time.
What Keyword Stuffing Looks Like
Keyword stuffing is a confirmed negative ranking factor. Google will actively push your page lower in results if it detects you’re cramming keywords unnaturally. The practice involves loading a page with repeated keywords in ways that don’t read as normal writing.
Common signs include long lists of keyword variations stacked together, phrases that appear out of context or don’t flow as natural prose, and hidden text (like white text on a white background) packed with keywords. Stuffing isn’t limited to body copy. Packing your title tag or meta description with repetitive keyword variations triggers the same penalty.
There’s no published keyword density number that automatically gets you flagged. Google’s algorithm evaluates whether content is genuinely useful or whether it’s been written primarily to manipulate rankings. The practical test is simple: read your content out loud. If a phrase sounds forced, awkward, or repetitive, rewrite it. Use synonyms and related terms instead of repeating the exact same phrase. Focus on answering the reader’s question thoroughly, and the keyword usage will typically fall into a natural range on its own.
A Practical Keyword Placement Checklist
- Title tag: Primary keyword, under 60 characters
- H1 heading: Primary keyword, one per page
- URL: Primary keyword, short and hyphenated
- First 100 words: Primary keyword, woven in naturally
- H2 subheadings: Primary or secondary keywords in some headings
- Body text: Primary and secondary keywords at roughly 1 to 2 percent density
- Meta description: Primary keyword, under 155 characters
- Image file names: Descriptive, keyword-relevant names
- Image alt text: Accurate descriptions with keywords where they fit naturally
The underlying principle across all of these placements is the same: use keywords to accurately describe what your page offers, put them where search engines and readers look first, and never sacrifice readability to squeeze in one more repetition.