Privacy Policy

Last updated: April 2026

What StackScope does

StackScope is a public directory that analyses the technology stacks of product launch websites. We crawl publicly accessible web pages and extract technical information: frameworks, hosting providers, security headers, DNS records, and other signals that are already visible to anyone with a web browser.

What we collect about websites

For each website we analyse, we store:

  • The website URL, name, and description
  • HTTP response headers
  • Publicly accessible HTML content (rendered page)
  • DNS records (MX, TXT, NS, all public)
  • A viewport screenshot of the page
  • Detected technologies, scores, and analysis results

All of this information is already publicly available. We do not access any authenticated areas, submit forms, or interact with websites beyond loading the page.

What we collect about visitors

We run our own privacy-focused, cookieless analytics to understand how people use StackScope. For each page view we record:

  • The page path visited
  • Referrer domain (not the full URL)
  • Browser and device type (parsed from the user agent string)
  • A daily visitor hash: a one-way SHA-256 hash of your IP address, user agent, and the current date. This rotates every day, so we cannot track you across days or identify you personally

We do not:

  • Use cookies of any kind
  • Store your IP address in our analytics (it appears in standard server logs which are deleted after 30 days)
  • Run third-party analytics, tracking scripts, or advertising
  • Collect personal information or require accounts
  • Sell, share, or transfer any data to third parties

Raw analytics data is automatically deleted after 30 days. Only aggregated, anonymous statistics (e.g. "50 views on /browse today") are retained long-term. Standard web server logs are also deleted after 30 days.

Our crawler

Our crawler identifies itself as StackScopeBot/1.0 (+https://stackscope.dev/bot). It respects robots.txt directives and crawls each website once. Full details about our crawler's behaviour are on our bot information page.

Website removal

If you are a website owner and would like your site removed from StackScope, you can:

  • Add a Disallow rule for StackScopeBot in your robots.txt. We will not re-crawl your site
  • Email us at [email protected] to request removal of existing data

Data storage

All data is stored on our own infrastructure in a local database. We do not use third-party analytics, advertising, or data processing services for visitor data.

Changes to this policy

We may update this policy as StackScope evolves. The "last updated" date at the top will reflect any changes. We don't collect email addresses, so we can't notify you. Check back if you're concerned.

Contact

Questions about this policy or our data practices: [email protected]