TL;DR: The best way to find content gaps competitors are ranking for is to compare your Google Search Console queries against a competitor's ranking keywords, pulled manually or via a Google keyword ranking API, then isolate the terms they rank for that you don't. Prioritize by search volume and ranking difficulty, not keyword count, and don't stop at Google, missed mentions in AI answer engines like ChatGPT and Gemini are content gaps too. Serafind automates this entire comparison into a ranked, written, and published content plan.
The best way to find content gaps competitors are ranking for is to compare your Google Search Console queries against a competitor's ranking keywords, pulled manually or via a Google keyword ranking API, then isolate the terms they rank for that you don't. Prioritize by search volume and ranking difficulty, not keyword count. Serafind automates this comparison into a ranked, written, and published content plan.
The best way to find content gaps competitors are ranking for is to compare your Google Search Console query data against a competitor's ranking keywords pulled from a rank-tracking tool or Google keyword ranking API, then isolate the terms they rank for that you don't. Prioritize that list by search volume and ranking difficulty, not just by raw keyword count. Tools that automate this comparison and turn the output into a ranked content plan save the manual spreadsheet work most teams get stuck on.
Most content gap audits fail for one reason: they stop at discovery. You find fifty keywords a competitor ranks for and you don't, feel a jolt of urgency, and then the list sits in a spreadsheet because nobody has time to write fifty briefs. The actual skill isn't finding gaps. It's finding the right gaps, ranking them by what they're worth, and getting content published before the opportunity closes.
This guide walks through the full process: how to find the right competitors to analyze, manual methods you can run today for free, what a Google keyword ranking API adds once you're serious, and how to merge all of it with your own Search Console data so the output is a prioritized plan instead of a pile of keywords.
What's the Best Way to Find Content Gaps Competitors Are Ranking For? Start With What a Gap Actually Is
A content gap is a keyword with real search demand where a competitor has a ranking page and you have nothing indexed and relevant to compete with it. That definition matters because it excludes a huge chunk of what most "gap reports" spit out. A keyword with no search volume isn't a gap, it's noise. A keyword where a competitor ranks on page three isn't urgent either, since they haven't proven it's winnable.
This is also where content gaps and keyword gaps part ways. A keyword gap tool will happily hand you a thousand terms a competitor touches somewhere on their site. A content gap is narrower: it's tied to buyer intent, to a stage in your funnel, or to a topic cluster where you need authority to rank for anything nearby. Chasing every keyword gap wastes writing hours on terms nobody searches and nobody buys from.
Generic keyword difficulty scores make this worse, not better. A score of medium difficulty tells you nothing about why a page ranks. Maybe the top result is a thin listicle you could outrank in a month. Maybe it's a domain with years of backlinks you can't touch yet. You have to actually look at what's ranking, not just the number attached to the keyword, before deciding whether a gap is worth filling now or later.
The last mistake is treating this as a one-time project. Competitors publish new pages every month. New AI-era search behavior creates new queries constantly. A gap analysis run once in January is stale by March. The accurate way to handle this is to treat competitor gap detection as a recurring input into your ongoing content planning process, not a single audit you check off a list.
Step 1: How to Find Competitor Websites Worth Analyzing
Before you can check what a competitor ranks for, you need an accurate list of competitors. This sounds obvious until you realize most businesses only think of one or two direct rivals, the companies they'd name in a sales call. For content gap purposes, that list is too short.
Start by learning how to find competitors of a website the simple way: search your core keywords in Google and record every domain that shows up in the top 10 to 20 results, across at least ten to fifteen different queries, not just your single highest-value term. Patterns emerge fast. Some domains show up constantly across your category. Those are your real SERP competitors, whether or not they sell the same product as you.
If you want a faster way to find competitors websites, use a tool that shows shared ranking keywords between domains. Type in your own site and it will surface which domains overlap with you on the most queries. This catches competitors you'd never think to search for manually, including publishers, review sites, and tangential tools that compete for your audience's attention even if they don't compete for your customers' dollars.
It helps to separate direct competitors (same product or service as you) from SERP competitors (different business, same search queries). Both matter. A direct competitor tells you where you're losing deals. A SERP competitor tells you where you're losing traffic. For a full checklist on how to find my competitors website, check three buckets specifically: who ranks for searches that include your brand name plus "alternative," who ranks for your broad category terms, and who ranks for your bottom-funnel service terms, the ones closest to someone ready to buy.
Step 2: How to Check Website Competitors' Ranking Keywords Manually
You don't need paid software to start. Manual research is slower, but it's free, and it's a reasonable way to test whether gap analysis is worth investing more time and money into before you commit to tooling.
The simplest method for how to check website competitors is the site: search operator. Run site:competitor.com combined with a topic word to see every indexed page they have on that subject. Pair that with a look at the "People Also Ask" boxes that appear for your category's main queries. Those boxes reveal the exact sub-questions Google thinks belong with a topic, and if a competitor has a page answering one and you don't, that's a gap you found without any software at all.
Reviewing a competitor's sitemap or blog category pages is the next useful step. Most CMS platforms expose a sitemap.xml file, and scanning it (or just scrolling their blog's category archive) shows you the shape of their content strategy at a glance: which topics they've built clusters around, which they've only touched once, and where their publishing has gone quiet. This tells you not just what they rank for today, but where they're likely to keep publishing next.
Manual research has a real ceiling, though. It surfaces obvious gaps but gives you no ranking position data, no search volume estimate, and no sense of trend direction, whether a keyword's demand is rising or fading. You can tell that a competitor has a page on a topic, but not whether that page ranks third or thirtieth, or whether the keyword is worth the time to compete for. For a solo founder or a small team testing the idea before spending money, manual checks are a fine starting point. For anyone running this process monthly, it becomes the bottleneck fast.
Step 3: Using a Google Keyword Ranking API to Automate Gap Detection
A google keyword ranking api does exactly what the manual process above does, except it pulls ranking positions for a defined set of keywords across any domain you point it at, programmatically, without a human opening a browser and typing searches one at a time.
In practice, an api for google keyword rankings (or a broader google ranking api built on top of SERP data) gets pointed at a competitor's domain and returns their full list of ranking keywords along with position, on a schedule you set. Instead of running a manual check once and hoping it's still accurate next quarter, you get a refreshed view every week or month, automatically.
The real advantage over manual research isn't speed, it's persistence. Competitors publish new content constantly, and a new page can start ranking within weeks. A one-time manual snapshot misses that entirely. Ongoing API-based monitoring catches new competitor content as it starts climbing the rankings, which means you see emerging gaps while they're still winnable instead of after a competitor has locked in months of backlinks and authority on the topic.
This is also the layer where an automated approach starts to diverge from a plain tracking tool. Pulling competitor rankings is only half the job. The data has no value sitting in a dashboard by itself, it needs to be compared against your own site's performance before it means anything actionable. This is the step Serafind handles differently: it merges this kind of ranking data directly with a business's own Search Console data, rather than leaving you to export two reports and merge them yourself in a spreadsheet.
Step 4: Merging Your Search Console Data With Competitor Rankings
The practical workflow looks like this: export your top queries and landing pages from Search Console, export a competitor's ranking keyword list from whichever tool or API you're using, then join the two lists on the keyword column. Whatever remains in the competitor's column with no match in yours is your raw content gap list.
Raw isn't ranked, though. The next step is weighting that list so the highest-value gaps float to the top instead of getting buried under low-value noise. Two factors matter most: estimated click potential (how much traffic that keyword could realistically send) and the position gap (how far the competitor's page sits from the top of the results, since a competitor ranking at position two is harder to dislodge than one sitting at position eight). A keyword with decent volume and a weakly-ranking competitor page is worth far more of your time than a high-volume term dominated by an entrenched result.
This exact exercise, pulling Search Console data, comparing it against competitor rankings, and weighting the result into a priority order, is what a platform built around Search Console data does automatically each month instead of requiring someone on your team to rebuild the spreadsheet every time. Serafind runs this comparison on a recurring basis and outputs a ranked monthly content plan rather than a one-time list that goes stale within weeks.
Where Tools Like Raven Tools and General SEO Platforms Fall Short
Platforms in the raven tools competitors category, the broad field of rank-tracking and SEO reporting dashboards, are generally built to surface this exact kind of gap data. That part they do well. Where most of them stop is the handoff: once the dashboard shows you the gap list, the work of turning it into briefs, drafts, published pages, and backlinks still lands on you. That gap between insight and execution is the most common failure point in SEO workflows. Teams buy a tracking tool, get a genuinely useful report, and then the report sits unused because nobody has the hours to act on fifty new keyword opportunities a month on top of their existing workload.
Tools like outrank.so, arvow.com, tryspook.com, and rankgoat.app sit in adjacent categories focused on content or SEO automation more broadly. Without claiming specific features beyond what's publicly documented about each, the general pattern across this space is the same one described above: discovery tools and writing tools tend to live separately, which means someone still has to connect the two manually, or you adopt a separate tool for each step and manage the handoff yourself.
The real opportunity sits in closing that loop entirely. A tool that takes a gap from "discovered" to "published and earning links" without a manual handoff in between is doing meaningfully more work than a tracking dashboard alone, and it's the difference between a report you read and a page that actually ranks. For a closer look at how this compares against one specific competitor's approach, see this breakdown of SEO automation alternatives.
Turning a Content Gap List Into a Ranked, Published Content Plan
Finding the gap is the easy half. Once a list is prioritized, each keyword still needs a brief, a draft written around search intent, a publish step onto your actual site, and backlink outreach to help the new page earn authority instead of sitting unranked for months. That's four separate jobs most teams either skip, outsource, or do inconsistently.
This is the specific step Serafind automates: it analyzes a business's Search Console and keyword data to build the ranked monthly plan described above, then writes, publishes, and earns backlinks for that content automatically, without someone managing each stage by hand. The loop runs continuously rather than as a single project, which matters because competitor gaps keep appearing every month, not just once.
Compare that against the two usual alternatives. Hiring an agency gets you strategy and writing, but you're paying agency rates and still waiting on their timeline for each deliverable. Using a generic content generator gets you fast drafts, but someone on your team still has to do the strategy and prioritization work described in the earlier steps, and generic tools don't know which gaps are actually worth your time. Closing the full loop, from gap data to a finished, published article, without a manual handoff at any stage, is the part most tools in this space leave for you to figure out.
Don't Stop at Google: Checking Content Gaps in AI Answer Engines Too
Traditional rank tracking only covers half the picture now. A newer and increasingly important layer of competitive analysis is checking whether your competitors are being mentioned by AI answer engines like ChatGPT and Gemini for queries your business should own, queries where a user is asking a question your product directly answers.
A missed AI mention functions as its own kind of content gap, separate from where you sit in Google's organic rankings. You might rank fine on page one for a term and still be invisible when someone asks an AI assistant the equivalent question conversationally, if your content doesn't address the query in a format these engines can pull from. As more searches happen inside AI tools instead of a traditional search box, that gap becomes part of a complete competitive picture, not an optional extra.
Serafind tracks this visibility directly and turns missed AI mentions into new content opportunities as part of the same monthly plan it builds from Search Console and competitor ranking data, rather than treating AI visibility as a separate project with its own tooling. For more detail on how this kind of tracking works across different AI platforms, see this overview of AI answer engine visibility tools.
Conclusion: Choosing Your Approach Based on Time and Resources
Three tiers cover almost every situation. Manual research, site: searches, People Also Ask boxes, and sitemap reviews, suits a quick one-time competitive check when you're still deciding if gap analysis is worth deeper investment. A google keyword ranking api suits teams who want ongoing, scheduled visibility into what competitors are ranking for without manually rechecking every month. A full platform that merges your own Search Console data with competitor rankings and turns the result into prioritized, written, published content suits anyone who wants the gap-to-content loop to run without managing each stage by hand.
Pick based on how much of this you actually want to manage yourself. If you have the hours and enjoy spreadsheet work, manual or API-based tracking will get you the data. If you'd rather the gaps turn into published, backlinked pages automatically each month, that's the loop worth setting up once instead of rebuilding every time a new competitor article starts ranking.
Frequently asked questions
What's the best way to find content gaps competitors are ranking for?
Compare your Google Search Console queries against a competitor's ranking keywords, then isolate terms they rank for that you don't. Prioritize by search volume and difficulty, not raw count, to find gaps worth filling.
How do I pull a competitor's ranking keywords?
Use a rank-tracking tool or Google keyword ranking API to pull a competitor's organic keywords, then cross-reference them with your Search Console data to spot where they outrank you.
Should I include AI answer engines in a content gap analysis?
Yes. Missed mentions in ChatGPT, Gemini, and other AI answer engines are content gaps too. Serafind tracks these alongside traditional search gaps to build a complete content plan.