So you picked a niche. Maybe you’re pumped about it, maybe you’re still lowkey unsure. Either way, none of that matters if nobody’s searching for what you’re about to write. That’s where keyword research comes in, and honestly, it’s the one step most beginner affiliates rush through or skip entirely. Big mistake.
Good keywords are basically a map. They tell you what people actually want, in their own words, at the exact moment they’re ready to click “buy.” Get this part right and everything downstream gets easier. Get it wrong and you’ll write article after article that nobody ever finds.
Let’s get into how to actually find keywords that convert, not just keywords that sound nice.
Start with what your audience is actually typing
Forget fancy tools for a second. Open Google. Type in something broad, like “best running shoes” or “budget vpn.” Look at what autocomplete throws back at you. That’s real people, typing real questions, right now. It’s free, it’s fast, and it’s shockingly underused.
Scroll down to the bottom of the results page too. You’ll see “People also search for” or “Related searches.” That section is a goldmine. Half the time it’ll hand you five keyword ideas you never would’ve thought of on your own.
Also check the “People also ask” boxes that pop up mid-results. Those are literal questions your future readers are asking. Answer them in your content and you’re already ahead of most of your competition.
Think in terms of buyer intent, not just topic
Not all keywords are built the same. Some people are just browsing. Some are ready to whip out their credit card. You want to know the difference, because it changes what you write and how hard you push the affiliate link.
Here’s a rough breakdown:
- Informational – “what is a vpn,” “how does cold brew work.” These folks are learning. Don’t hard sell here.
- Commercial investigation – “best budget vpn 2026,” “nordvpn vs expressvpn.” These people are comparing options. This is prime affiliate territory.
- Transactional – “nordvpn discount code,” “buy running shoes online.” These people are basically already reaching for their wallet.
If you’re chasing affiliate commissions, commercial and transactional keywords are where the money’s at. Informational content still matters, it builds trust and brings in traffic, but don’t expect it to convert the same way.
Use “vs” and “alternative” keywords, they’re underrated
People love comparing stuff before they buy. Keywords like “[product] vs [product]” or “[popular product] alternative” pull in visitors who are literally on the fence, just waiting for someone to nudge them toward a decision. That someone can be you.
These keywords also tend to be less competitive than the big obvious ones, since a lot of bigger sites overlook them in favor of “best X” roundups. That’s your opening.
Bring in a keyword tool once you’ve got a starting list
Once you’ve got a handful of keyword ideas from Google itself, it’s time to plug them into an actual tool to see the numbers behind them. You don’t need to pay for anything fancy right away. Free tools get you pretty far.
- Google Keyword Planner – free if you set up a Google Ads account, even if you never run an ad. Gives you rough search volume and competition levels.
- Ubersuggest – has a free daily search limit, good for quick checks on volume and difficulty.
- AnswerThePublic – great for pulling question-based keywords, which are perfect for blog content.
- Ahrefs or Semrush – paid, but worth it once you’re serious. Way more accurate data and lets you spy on what competitors are ranking for.
You’re looking for keywords with decent search volume but low to medium competition. High volume, low competition is the dream, but rare. Most of the time you’ll be trading off one for the other.
Steal ideas from your competitors, no shame in it
Find three or four sites already ranking in your niche. Plug their URLs into a tool like Ahrefs or even the free version of Ubersuggest. You’ll see exactly which keywords are sending them traffic. Now you know what’s already working, without guessing.
Look for keywords where they’re ranking on page two or three. Those are winnable. If you can write something more thorough or more current, you’ve got a real shot at outranking them.
Don’t sleep on long-tail keywords
“Running shoes” is basically unwinnable for a new site. Way too much competition. But “best running shoes for flat feet under $100” is a totally different story. That’s a long-tail keyword, and it’s specific enough that fewer sites are targeting it directly.
Long-tail keywords usually get less search volume individually, sure. But they add up fast, and they convert way better because the person searching knows exactly what they want. That specificity is a gift, don’t waste it.
Check the keyword against the actual offer
This part gets skipped a lot. Before you build content around a keyword, double check that there’s actually an affiliate offer that fits it. No point ranking for “best vegan protein powder” if you don’t have a solid vegan protein offer to link to.
Work backward sometimes. Look at the offers available to you first, then find the keywords that match. It saves you from writing great content that has nowhere to send the traffic.
Keep a running list, don’t just wing it every time
Every time you stumble on a good keyword idea, jot it down. Spreadsheet, notes app, whatever works for you. Include the search volume, the competition level, and which offer it pairs with. Over time this becomes your content roadmap, and you’ll never sit there wondering what to write next.
The bottom line
Keyword research isn’t glamorous. It’s not the fun part of affiliate marketing. But it’s the part that decides whether your content actually makes money or just sits there collecting dust. Spend the time upfront, stay specific, and always keep buyer intent in mind. That’s really the whole game.
If you’re looking to take your affiliate strategy further, Reacheffect connects publishers with high-converting offers across dozens of verticals, backed by real support and reliable payouts. Whether you’re just starting to build out keyword-targeted content or scaling up an established site, Reacheffect makes it easier to match the right offer to the right traffic, so all that keyword research actually pays off.
