The question "what should I blog about?" has a specific, researchable answer — but most people approach it as a creative exercise rather than a research task. They brainstorm ideas, pick the ones that feel interesting or important, and then write about them. The result is a blog full of posts that might be well written but were never going to rank, because nobody was searching for them.
Finding blog topics that actually rank starts with a different question: what are the specific things my target readers are searching for, in language close to what I could genuinely cover better than what is already ranking? The intersection of search demand, attainable competition, and your genuine capability is where rankable topics live.
This guide is about finding that intersection systematically rather than by accident.
The Real Problem With Topic Finding
Most content calendars are built backwards. People decide what they want to say and then look for an audience. SEO topic research starts from the other direction: find what an audience is already looking for and then decide what you can contribute that is better than what they are currently finding.
The result of the backwards approach is content that is interesting to write but invisible in search. It might get some social shares, some comments from existing followers — but it does not grow an audience because it does not appear when people who do not already know you are looking for something.
The result of the forward approach — finding real search demand first — is content that brings in readers who were not previously aware of you. Those readers arrived because they needed something and your content provided it. That is a fundamentally stronger relationship than a reader who arrived because they already follow you and happened to notice a new post.
The challenge with the forward approach is that it requires actual research rather than brainstorming. That research is not complicated, but it does require knowing where to look and how to filter what you find.
Where to Find Topics Worth Targeting
Type your broad topic into Google and note what the autocomplete suggests. These are real searches people are making. The "People also ask" section shows related questions — each of those is a potential topic. These sources are free, require no tools, and reflect genuine search behaviour rather than estimated data.
Go to Performance and look at the queries your site already ranks for. Sort by impressions — pages with many impressions but poor click-through rates are potential topics where a dedicated post could do much better than the existing page that is ranking. Also look at queries you rank for in positions 8–30: a dedicated post targeting one of those queries more precisely could move it into the top five.
Ahrefs, Semrush, and Ubersuggest all offer keyword data including search volume, keyword difficulty, and related terms. For freelancers and small sites without enterprise budgets, Ubersuggest has a free tier that is sufficient for basic research. The key metric to prioritise is keyword difficulty relative to your domain authority — high-volume, high-difficulty keywords are off the table for new or small sites regardless of how relevant they are.
These platforms show you how real people phrase their questions — in natural language rather than keyword-optimised form. A question like "how do I make my LinkedIn posts not sound like a robot wrote them?" on a copywriting subreddit tells you both the topic and the tone of voice your reader uses. It also tells you the question is asked repeatedly, which is a signal of genuine search interest.
Find two or three sites that rank for topics in your niche and use a tool like Ahrefs or Semrush to see which of their posts get the most organic traffic. This shows you the topics that have proven demand in your category. You are not going to copy their posts — you are going to identify the topic, find the gap in their coverage, and write something better targeted or more specific.
Every question a client asks me is a potential blog post. If one person asks it, dozens more are searching for it. I keep a running list of questions from client emails, discovery calls, and project briefs. These topics have the advantage of being exactly the questions my target audience has — not an approximation based on keyword data.
How to Filter Topics Before You Commit
Having a long list of potential topics is not the goal — having a short list of topics worth writing is. Most topic ideas fail one or more of these filters:
| Filter | The question to ask | What passes |
|---|---|---|
| Search demand | Are people actually searching for this? | Topics with measurable monthly search volume, or closely related to terms with volume. Topics you invented from brainstorming with no search data often fail here. |
| Attainability | Can a site with my current authority realistically rank for this? | Topics where the current ranking pages are from sites of similar or lower authority, or where the existing results are weak (thin content, poor coverage). High-DA competitors on every result means this topic is not attainable yet. |
| Relevance to your audience | Would my specific target reader search for this? | Topics that match the profile of who you are writing for. General-interest topics may have search volume but attract an audience you cannot convert to clients or subscribers. |
| Your genuine capability | Can I write something better than or different from what is already ranking? | Topics where you have specific expertise, a distinct angle, original experience, or access to examples and evidence the current ranking posts lack. |
| Business value | Does ranking for this topic bring me readers who eventually become clients? | Topics adjacent to your services. A copywriter ranking for "how to write a LinkedIn post" reaches potential clients. Ranking for "best Netflix shows" reaches nobody who will hire them. |
A topic that passes all five filters is worth writing. A topic that passes four out of five needs a closer look. A topic that fails two or more should probably be dropped regardless of how much you want to write it.
Four Types of Topics and When to Use Each
Informational — "how to" and "what is"
The largest category of rankable content. Readers want to understand or learn how to do something. These posts drive the most search traffic but are furthest from a purchase decision, so they need a clear internal link path to content closer to your services.
Best for: top-of-funnel audience building, establishing topical authorityComparison — "X vs Y" and "best X for Y"
Readers are in a decision process and want help evaluating options. These posts attract readers who are closer to a decision — which means they are more likely to be in a buying mode. Comparison content for tools, approaches, or service types often converts better than informational content.
Best for: mid-funnel content, reaching readers actively evaluating optionsProblem-specific — "why is X not working" and "how to fix Y"
Readers have a specific problem they are trying to solve right now. These posts are highly targeted and often less competitive than broad informational topics because they require specific knowledge to answer well. If you have genuine expertise in troubleshooting or fixing a specific problem in your niche, these posts can rank and convert strongly.
Best for: reaching readers with an active, specific need who are primed to actOpinion and perspective — "why I stopped X" and "the problem with Y"
Not directly keyword-driven but can rank for long-tail queries and are strong for audience building through shares and links. These posts work best once you have some existing audience or authority — a new site publishing opinion content has no amplification mechanism. Use sparingly in a content mix that is otherwise research-driven.
Best for: differentiating your voice, earning links, supplementing an established content libraryEvaluating a Topic Before You Write
Before investing time in writing a full post, spend ten minutes on this evaluation. It will save you from writing posts that are never going to rank regardless of their quality.
Building a Topic List That Compounds
The most effective approach to topic research is building a list by cluster rather than by individual topic. A cluster is a group of related posts that all address different aspects of the same broad subject and link to each other. Writing a cluster gives you compounding benefits: each post you publish strengthens the authority of all the others in the cluster, because they are interlinked and collectively signal depth of coverage on the topic to Google.
To build a cluster-first topic list:
- Identify the three to five broad topics that are central to your niche and directly relevant to your services
- For each broad topic, identify one pillar page — a comprehensive overview that covers the topic at a high level
- For each pillar, identify six to ten cluster posts — specific subtopics that go deep on one aspect of the pillar topic
- Use keyword research to confirm which subtopics have search demand and which are attainable given your current authority
- Prioritise cluster topics that are closest to purchase intent — these bring readers who are more likely to become clients
For a freelance copywriter, this might look like: pillar page on SEO writing, with cluster posts on article briefs, meta descriptions, internal linking, blog post length, topic research, and updating old content. Each cluster post links back to the pillar and to the other posts in the cluster. Every new post strengthens the entire cluster.
If you want to turn this topic list into a structured publishing calendar — with deadlines, batching, and a workflow for maintaining consistency — my guide on how to build a blog content calendar covers the planning side of turning a topic list into a sustainable publishing cadence.
I research, plan, and write SEO content for freelancers and growing businesses — starting from keyword research through to a publishing calendar with topics that have real ranking potential. Let's talk.