How to spy on your competitors' marketing strategy with public data

You can learn most of a competitor's marketing strategy from public sources. Their sitemap shows what they publish, ad libraries show what they pay to promote, traffic and SEO tools estimate where their visitors come from, and their newsletter and social feeds show how they nurture an audience. The aim is not to copy them, but to find the gaps you can fill better.

1. Read their sitemap

Most websites publish an XML sitemap that lists their pages. Try adding /sitemap.xml or /sitemap_index.xml to a competitor's domain, or open /robots.txt, where sites often point to their sitemap with a Sitemap: line.

Large sites split their sitemap into several files listed in an index, often one each for posts, pages, products or categories. That alone tells you how the site is organized. Under the sitemaps protocol, the lastmod date should be the date a page was last changed, so where it is filled in you can see:

• How often they publish or update content
• Which topics and keywords their URLs target
• Which sections, such as comparison pages or templates, they are investing in

2. Estimate their traffic and channel mix

Tools such as Similarweb estimate a site's visits, traffic sources, top countries and engagement. Similarweb explains that its data blends first-party analytics from sites that share data, anonymous data from devices, public data and partner data, which it then extrapolates and models.

Use these numbers to compare trends and proportions, for example whether a competitor relies on organic search, paid search or referrals. Do not treat them as exact visitor counts.

3. See every ad they are running

Three free ad libraries show competitors' ads without any special tool:

• Google Ads Transparency Center. A searchable hub of ads from verified advertisers. Google says you can see the ads an advertiser has run, which ads ran in a given region, the last date an ad ran and its format.
• Meta Ad Library. Lets you search ads currently active across Meta's apps. Ads about social issues, elections or politics stay searchable for seven years.
• LinkedIn Ad Library. Covers ads that ran on LinkedIn after 1 June 2023 and keeps them for one year after their last impression. You can search by advertiser, keyword, country and date range. For ads aimed at the EU, it also shows impressions, targeting and run dates.

For B2B teams, LinkedIn's library is especially useful. Look at the offers competitors promote, such as demos, reports or webinars, and how their messaging changes over time.

4. Analyze their backlinks

Backlink tools show which sites link to a competitor and which of their pages earn the most links. This reveals their PR wins, partnerships, directory listings and content that attracts links naturally. See our guides to the best tools to find competitor backlinks and how to use Semrush for link building.

Look for sites that link to several competitors but not to you. Those are often the best outreach targets.

5. Find the keywords they rank for

SEO tools such as Semrush and Ahrefs estimate which search terms send traffic to a competitor's pages. Run a keyword gap analysis to find terms where they rank and you do not. Prioritize terms that show buying intent, such as comparisons, alternatives and pricing searches. Our guide on how to use Semrush for keyword research walks through the process.

6. Subscribe to their email list

Sign up for their newsletter, download a lead magnet and, where it makes sense, start a free trial. Then track:

• How quickly the first email arrives and what it offers
• Whether they run a drip sequence and how long it is
• How often they send, and on which days
• Which calls to action they use, such as demos, upgrades or webinars
• How they segment you after you click

Compare it with your own email marketing strategy.

7. Study their social media

Look at which channels they use most and what gets the most engagement. Note their formats (video, carousels, text posts), how often they post, whether employees and founders post for the brand, and how they answer comments. Engagement on a post is visible to everyone, which makes it easier to judge than traffic.

8. Check how their site has changed

The Internet Archive's Wayback Machine stores snapshots of many public web pages over time. Compare a competitor's homepage, pricing page or product pages across months or years to see how their positioning, pricing model and target audience have shifted.

9. Ask AI assistants about your category

Buyers can now ask AI assistants for tool and vendor recommendations, so check what those assistants say. Ask a few of them the questions your buyers would ask, such as "best [category] tool for small teams", and note which competitors are named, how they are described and which sources are cited. This shows whose content and reviews are shaping those answers.

How do you turn competitor research into an edge?

Collecting data is the easy part. Make it useful:

1. Keep one shared document per competitor. Positioning, pricing, main channels, key offers and recent changes.
2. Look for gaps, not things to copy. A topic they cover poorly, an audience they ignore or a channel they do not use is your opening.
3. Share it with sales. Turn findings into battle cards so reps can answer "how are you different from X?"
4. Review regularly. A full review once or twice a year, with a light monthly check of ads, content and pricing.

For a fuller framework, read key elements of a brand's competitor analysis and conducting a marketing audit.

Where is the line?

Everything above uses public information. Do not pose as a customer or job candidate under false pretenses, log into accounts you have no right to use, or ask a competitor's former staff for confidential material. Good competitive research does not need any of that.