Competitor Gap Analysis for SEO: A Step-by-Step Process

A competitor gap analysis answers one question: what are the sites outranking you doing that you are not? Done well, it produces a prioritized list of pages to create, pages to improve, technical fixes and link targets. Done badly, it produces a 4,000-row keyword export that nobody acts on.

This is the process we use. It works with any of the major SEO tool suites plus free data from Google, and it ends with a scoring step so the output is a plan, not a spreadsheet.

Step 1: Identify your real search competitors

Your business competitors and your search competitors are often different sites. A local accounting firm competes commercially with other firms in town, but in search it may be competing with software vendors, government sites and publishers who rank for the same queries.

To find search competitors:

1. List 20 to 50 queries you want to rank for, mixing commercial terms ("technical seo audit service") with informational ones ("how to fix crawl errors"). Pull them from Search Console where possible, so they reflect real demand.
2. Check who ranks on page one for each. Use an incognito window or a rank-tracking tool set to your target country and device.
3. Count how often each domain appears. The domains that appear most often across your query set are your search competitors.

SEO tools automate this with reports such as Ahrefs "Competing domains" or Semrush "Organic Research > Competitors", which rank sites by keyword overlap with yours. Use them as a starting point, but sanity-check the list manually. Tools often surface huge generalist sites that overlap on many keywords but are not realistic competitors.

Pick three to five competitors for the analysis. More than that and the data becomes unmanageable.

Step 2: Run the keyword gap

A keyword gap compares the queries each competitor ranks for against yours. Most SEO suites have a dedicated tool for this, such as Ahrefs "Content Gap" or Semrush "Keyword Gap".

Set it up as follows:

• Enter your domain and your three to five competitors.
• Filter to keywords where at least two competitors rank in the top 10 and you do not rank in the top 100 (or at all). Keywords where only one competitor ranks are often brand-specific or flukes.
• Restrict to your target country.
• Export with search volume, keyword difficulty and the ranking URL for each competitor.

You will get three useful buckets:

Clean the export before analyzing it

Raw keyword exports are noisy. Remove:

• Competitor brand terms and product names.
• Keywords with an intent you cannot serve (for example, job searches or location queries for places you do not operate).
• Near-duplicates. "seo audit checklist", "seo audit check list" and "checklist for seo audit" are one topic.

If you are comfortable with a little Python, grouping by ranking URL is the fastest way to collapse duplicates into topics:

import pandas as pd

df = pd.read_csv("keyword_gap.csv")

# Drop competitor brand terms
brands = ["competitora", "competitorb", "competitorc"]
df = df[~df["Keyword"].str.lower().str.contains("|".join(brands))]

# One row per competitor URL, with the keywords it ranks for
topics = (
    df.groupby("Competitor URL")
      .agg(keywords=("Keyword", "count"),
           total_volume=("Volume", "sum"),
           top_keyword=("Keyword", "first"))
      .sort_values("total_volume", ascending=False)
)
topics.to_csv("gap_topics.csv")

Column names vary by tool, so adjust them to match your export. The output is one row per competitor page, which is closer to how you will actually act: one new page per topic, not one per keyword.

Step 3: Analyze the content gap by intent

Keywords tell you what topics are missing. The content gap tells you why competitors win those topics.

For each of your top 10 to 20 gap topics, open the top three ranking pages and record:

• Page type. Is it a guide, a comparison, a tool, a product category, a template, a glossary entry?
• Search intent. Informational, commercial investigation, transactional or navigational.
• Depth and format. Rough length, use of tables, code samples, images, step-by-step structure.
• Freshness. When it was published or last updated, if shown.
• What it has that yours does not. Original data, a calculator, a downloadable template, expert review.

The page type matters most. If every top result for a query is a comparison table and your planned page is a long essay, you are fighting the intent Google has already chosen. Match the format first, then make the content better.

Look for weak pages, not just missing ones

The "weak" bucket from Step 2 is often the faster win. You already have a page; it just loses to competitors. Compare your page with the winners on the same checklist. Common gaps:

• Your page answers a narrower question than the query implies.
• It is outdated (old screenshots, retired features, last year's figures).
• It lacks a clear answer near the top.
• It is thin on internal links. See our guide on internal linking strategy for how to fix that.

Step 4: Compare SERP features

Rankings are only part of the picture. Record which search features appear for your gap queries and who holds them:

• Featured snippets
• People also ask
• Image packs
• Local pack (for local businesses)
• Review stars and other rich results from structured data
• AI Overviews, where they appear

If a competitor wins rich results through structured data you do not have, that is a concrete technical gap. If a featured snippet goes to a competitor that answers the question in a short paragraph or list near the top of the page, that is a formatting gap.

Step 5: Compare technical performance

Two sites with similar content can perform very differently because of technical quality. You can compare competitors' field performance without access to their sites.

Core Web Vitals from CrUX

PageSpeed Insights shows Chrome UX Report field data for any public URL or origin with enough traffic. For a quick side-by-side, query the CrUX API directly for each competitor origin:

curl -s "https://chromeuxreport.googleapis.com/v1/records:queryRecord?key=YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"origin": "https://www.competitor-a.com", "formFactor": "PHONE"}'

The response includes the 75th percentile for LCP, INP and CLS, which are the values Google uses to assess Core Web Vitals. Put them in a table next to your own:

Fill it with your own results. If competitors pass and you do not, our Core Web Vitals developer guide explains how to diagnose each metric.

Crawlable structure

Crawl a sample of each competitor site (respecting their robots.txt and keeping crawl speed low) and compare:

• Click depth of key pages.
• How category and hub pages are structured.
• Use of breadcrumbs and structured data types.
• Whether important content is in the server HTML or rendered by JavaScript.

You are not copying their architecture, but patterns across several winning sites are worth noting.

Step 6: Run the backlink gap

Links remain a significant ranking factor, and the backlink gap shows where competitors earn links you do not.

Use a link intersect tool (Ahrefs "Link Intersect", Semrush "Backlink Gap", or the equivalent in your tool) to find referring domains that link to two or more competitors but not to you. Those domains have shown willingness to link to sites like yours.

Sort the results by relevance, not just by domain authority metrics, and classify each:

• Resource pages and roundups that list tools or guides in your space.
• Industry publications that cover topics you could contribute to.
• Directories and associations relevant to your niche (only reputable, curated ones).
• Links to a specific asset, such as a free tool, study or template. If several competitors earn links to similar assets, that tells you what type of content attracts links in your niche.

Ignore low-quality directories and obvious link networks. They are not worth pursuing, and the parallel guide on toxic backlink detection covers how to recognize them.

Step 7: Prioritize with a simple score

By now you have candidate actions from five sources: missing pages, weak pages, SERP features, technical fixes and link targets. Score each one so the order is defensible.

A workable scoring model uses three factors on a 1 to 5 scale:

• Impact: estimated traffic or revenue value if it succeeds.
• Confidence: how sure you are it will work, based on how clear the gap is.
• Effort: how much work it takes (5 is easiest).

In a spreadsheet with Impact in column B, Confidence in C and Effort in D:

=B2*C2*D2

Sort descending. The top of the list is where you start. Review the scores with whoever will do the work; effort estimates from the SEO team alone tend to be optimistic.

These rows are illustrative; score your own actions with your own data.

Step 8: Repeat on a schedule

Competitors publish, update and fix their sites continuously. Re-run the keyword gap and the CrUX comparison quarterly, and the full analysis once or twice a year. Between runs, track rankings for the gap queries you chose to target so you know whether the work is paying off.

For your own site, catching regressions early matters more than catching competitors' changes. AI Monitoring checks your key pages daily for indexing, Core Web Vitals and on-page changes, so a technical problem does not quietly erase the ground you gained. For a full baseline before you start, see our audit plans or the technical SEO audit checklist.

Summary

• Choose three to five search competitors based on SERP overlap for your target queries, not on who you compete with commercially.
• Run a keyword gap, clean out brand terms and duplicates, and group keywords into topics by ranking URL.
• Analyze the content gap by intent and page type before writing anything, and do not ignore your weak existing pages.
• Compare SERP features, Core Web Vitals and backlinks, which often explain why similar content ranks differently.
• Score every action by impact, confidence and effort, and work the list from the top.