Privacy Policy
Last updated: June 8, 2026
Overview
DiffPeek is a browser-based diff tool. All file comparisons, text comparisons, and code diffs are performed entirely inside your browser using JavaScript. No files, text, or code you compare are ever sent to our servers.
Information we collect
We collect limited, anonymised usage data through Google Analytics 4 (GA4) to understand how people use DiffPeek and improve the product. This includes:
- Pages visited and time spent on each page
- Referring website or search engine
- Browser type, operating system, and screen size (aggregated)
- Country-level location (not precise location)
We do not collect your name, email address, or any personally identifiable information.
Cookies
DiffPeek uses cookies placed by Google Analytics to track aggregated usage patterns. These cookies do not identify you personally. You can opt out of Google Analytics tracking by installing the Google Analytics Opt-out Browser Add-on.
If Google AdSense advertisements are displayed on DiffPeek, Google may use cookies to show you relevant ads based on your browsing history. You can manage ad personalisation at adssettings.google.com.
Your files and text
All diff comparisons happen locally in your browser. Files you select or drag into DiffPeek are read by your browser's File API and are never uploaded to any server. We have no technical ability to access your files or text.
Third-party services
DiffPeek uses the following third-party services:
- Google Analytics 4 — anonymised usage analytics (Google Privacy Policy)
- Google Fonts — web fonts loaded from Google servers (Google Privacy Policy)
Children's privacy
DiffPeek is a developer tool not directed at children under 13. We do not knowingly collect personal information from children.
Changes to this policy
We may update this policy from time to time. The date at the top of this page reflects the latest revision. Continued use of DiffPeek after changes constitutes acceptance of the updated policy.
Contact
If you have questions about this privacy policy, please contact us at privacy@diffpeek.com.