Privacy Policy

Last updated: July 2, 2026. lottie-mini is designed to work without collecting any of your data. This page describes exactly what information is and isn't handled when you use the site.

The short version

  • Any Lottie file you drop into the site is processed entirely in your browser. It is never uploaded to any server, including ours.
  • We do not require an account, do not collect email addresses, and do not use cookies to track individual users.
  • We use Vercel Analytics for aggregate, cookie-free traffic statistics (page views, referrers, browser categories). No personal identifiers are stored.
  • We display Carbon Ads and Google AdSense banners on some pages. Their networks may set their own cookies; both offer opt-out mechanisms.
  • The site is open source. If you want to verify any claim on this page, the code is on GitHub.

Files you drop into the site

The compressor, preview tool, and inspector all read files using the browser's File API and process them entirely in-memory using JavaScript, WebAssembly, and Web Workers. At no point does the file leave your device. You can confirm this by opening the browser's DevTools Network panel — you will see no request bodies containing your file, because there are none.

Downloads are generated locally as Blob URLs and delivered by your browser's normal download flow. The download button click does not trigger a network request.

What we do collect

Aggregate traffic statistics

We use Vercel Analytics, a privacy-focused analytics service that does not use cookies and does not track individual users. Vercel's system stores aggregate data: which pages were visited, from which referring site, on which browser category and country. No IP addresses are stored beyond the initial edge processing.

Server logs

Standard access logs from the Vercel edge infrastructure include IP address, timestamp, requested URL, response code, and user agent. These logs are used for security and debugging and are automatically deleted per Vercel's retention policy.

Third-party services

Vercel (hosting and analytics)

The site is hosted on Vercel. Their privacy policy is at vercel.com/legal/privacy-policy.

Google AdSense

We display Google-served ads on some pages (mainly the guide articles). Google may use cookies for ad personalization. You can opt out at adssettings.google.com or learn more at policies.google.com/technologies/ads.

Carbon Ads (BuySellAds)

Carbon Ads serves developer-focused sponsorships on some pages. Their privacy policy is at carbonads.net/privacy.

Cookies

The site itself sets one localStorage entry (lang) to remember whether you last chose English or Chinese. This is not a cookie and is not transmitted to any server. You can clear it any time from your browser's DevTools.

Third-party ad networks (Google AdSense, Carbon Ads) may set their own cookies. Please see their respective privacy policies above.

Children's privacy

lottie-mini is a developer utility and is not directed at children under 13. We do not knowingly collect data from children under 13.

Changes to this policy

If we materially change how the site handles data, the "Last updated" date at the top of this page will reflect that. The current version of this policy is always what applies.

Contact

For privacy questions or requests, email alex.chu0206@gmail.com.