Privacy Policy

Last updated: 2025.

This site provides free online developer tools (JSON validator, HTML validator, robots.txt tester, Schema.org validator). We aim to keep your use of the tools private and minimal in data collection.

Data we collect

When you use the tools in the browser, your input (e.g. JSON, HTML, robots.txt content) is sent to our servers only for validation. We do not store or log the content you paste. We may log anonymous usage metrics (e.g. request counts, errors) for reliability and rate limiting.

Advertising (Google AdSense)

We may use Google AdSense to display advertisements on this site. AdSense may use cookies and similar technologies to serve ads based on your prior visits to this site or other websites.

For more information about how Google uses data when you use partner sites or apps, see Google's Privacy Policy and How Google uses data in advertising.

Cookies and similar technologies

We and our partners (including Google) may use cookies and similar technologies for: Advertising — to show relevant ads (e.g. via Google AdSense) and measure ad performance; Analytics — to understand how the site is used; Preferences — to remember your choices (e.g. cookie consent, theme).

Google's use of advertising cookies is described in Google's advertising policy. You can control or delete cookies via your browser settings, or use Google Ads Settings to manage ad personalization.

Analytics

We may use third-party analytics (e.g. Microsoft Clarity, Google Analytics) to understand how the site is used. Such services may collect IP, device, and interaction data per their policies. You can control cookies via your browser settings.

API usage

API requests are rate-limited by IP. We do not store request bodies. Logs may include IP and timestamp for abuse prevention.

Contact

For privacy-related questions, see Contact.