Privacy & Cookie Policy
Last updated: October 2026
Your images stay on your device
All image processing in GridPrint happens entirely in your browser. Your images are never uploaded to any server. No account is required. Your files never leave your device.
Analytics
We use PostHog (EU cloud) to count anonymous, aggregated usage, such as page views and which features are used. This helps us improve GridPrint. Before you choose in the cookie banner, PostHog runs without cookies. If you accept, PostHog also sets cookies so we can recognize returning visits. If you decline, PostHog stops and does not load again. PostHog receives standard technical data such as browser, device type and approximate country. It never receives your images.
Page view statistics
We use Cloudflare Web Analytics to count page views and visits. It sets no cookies and does not identify you.
Error tracking
We use Sentry to capture JavaScript errors and crashes. This helps us find and fix bugs. Sentry is considered strictly necessary for the operation of the service and does not require consent. Error reports may include your browser type and the page URL. They never include your images.
Feedback you send us
If you use the feedback form, we receive your message, the feedback type and, only if you enter it, your email address. We store this in PostHog and Sentry so we can read and answer it. We use your email only to reply. To have your feedback deleted, email letanure+gridprint@gmail.com.
Advertising
GridPrint may show ads from Google AdSense to stay free. Ads appear only on information pages, never in the editor. Google and its partners may use cookies to show and measure ads, and to personalize them if you allow it. In the EU, UK and Switzerland, Google's consent message asks for your choice. To change it, use "Cookie settings". Google's policy: https://policies.google.com/technologies/ads
Local storage
GridPrint stores your language preference, saved presets, and cookie consent choice in your browser's local storage. Except as noted below, this data never leaves your device and is not shared with any third party. GridPrint also stores which ad layout you see, so it stays the same on your next visit. PostHog also receives this layout with usage data, so we can compare the two layouts.
Cookies used
If you accept analytics, PostHog sets first-party cookies to recognize returning visits. They are used only for aggregated statistics. If you decline, no analytics cookies are set. If GridPrint shows ads, Google and its partners may also set cookies, as described under Advertising. In the EU, UK and Switzerland, Google's consent message stores your choice in a cookie.
Your choices
You can accept or decline analytics at any time. Use the "Cookie settings" link in the footer or the app menu to change your preference. Declining does not affect any functionality — GridPrint works fully without analytics.