Privacy Policy — Open SEO Checker

Overview

Open SEO Checker is a locally-run, open-source tool. It operates as a server on your own machine (localhost:7437) and stores all crawl data in a local SQLite database. The developer receives no telemetry, usage data, or personal information from your use of this tool.

Data Storage

All data produced by Open SEO Checker is stored exclusively on your local machine:

Crawl databases: SQLite files written to a crawls/ directory in the project folder. Never uploaded anywhere.
Exports: CSV, JSON, XLSX, and XML files written to an exports/ directory. Never uploaded anywhere.
API keys: Stored in your browser's localStorage on the Settings page. Never sent to the developer's servers.
Log files: If you use the log analysis feature, you supply the log file yourself. It is processed locally and not transmitted.

No Telemetry or Analytics

Open SEO Checker collects no usage metrics, crash reports, or diagnostics. There are no analytics scripts, tracking pixels, or background callbacks to the developer. The tool has no knowledge of:

Which URLs you crawl
How many pages you audit
Which features you use
Your machine, IP address, or operating system

Third-Party API Integrations

Open SEO Checker supports optional integrations with third-party services. When you enable an integration and trigger a request, your data is sent directly from your machine to that service — not routed through any developer-operated proxy.

Service	Data sent	Their privacy policy
OpenAI	Crawl data you choose to analyse	openai.com/policies/privacy-policy
Anthropic Claude	Crawl data you choose to analyse	anthropic.com/privacy
Google Gemini	Crawl data you choose to analyse	policies.google.com/privacy
Google Analytics 4	Your GA4 property data (read-only)	policies.google.com/privacy
Google Search Console	Your GSC property data (read-only)	policies.google.com/privacy
PageSpeed Insights	URLs you submit for analysis	policies.google.com/privacy
Ahrefs	Domain/URL queries	ahrefs.com/privacy
Majestic	Domain/URL queries	majestic.com/privacy-policy
Moz	Domain/URL queries	moz.com/privacy-policy

All integrations are opt-in. None are enabled by default. You must provide your own API key for each service.

API Keys

API keys you enter in the Settings page are stored only in your browser's localStorage. They are:

Never sent to the backend server (localhost:7437) except as part of direct API calls to the respective provider
Never stored on disk by the tool
Never transmitted to the developer

Web Crawling & Target Sites

When you run a crawl, Open SEO Checker sends HTTP requests to the URLs you specify. Those target websites may log your IP address and request headers as part of their normal server logging. This is standard web behaviour and outside the scope of this policy. Ensure you have permission to crawl any site before doing so.

If you use JavaScript rendering (Playwright), a headless Chromium browser is launched locally. No data from the rendered pages is sent anywhere other than your local SQLite database.

Open Source

Open SEO Checker is fully open source under the MIT license. You can inspect every line of code that handles your data at github.com/cuongquachc88/open-seo-checker.

Changes to This Policy

If this policy is updated, the changes will be noted in the GitHub repository's release notes. The "Last updated" date at the top of this page will reflect the most recent revision.

Contact

Questions about this privacy policy? Contact: [email protected]