Minecraft Mod Updater is a static, client-side web application. There is no backend server
collecting or storing data about you. Everything happens locally inside your browser tab.
Your Files
Any .jar, .zip, .mrpack, or .json files you upload
are processed entirely in your browser. They are never uploaded to mcmodupdate.app or any third
party. When you close or refresh the tab, the files are gone.
Browser Storage
To improve performance, the application stores a small amount of non-personal data locally on your device:
- localStorage — caches the list of Minecraft versions and Modrinth platform statistics so the
app loads faster on subsequent visits.
- sessionStorage — caches mod lookups during your current tab session and is cleared automatically
when you close the tab.
You can clear this data at any time using your browser's site-data controls. The site does not use
tracking cookies.
Third-Party Services
The site loads resources from the following third parties. Each may receive standard request data
(your IP address, user-agent, and the resource being requested) under their own privacy policies:
- Modrinth API (
api.modrinth.com) — used to search for mods and retrieve version
and dependency information.
- Modrinth CDN — serves mod icons and gallery images.
- jsDelivr, unpkg, cdnjs — public JavaScript content delivery networks used to load the
libraries the app depends on (JSZip, toml-js, marked, crypto-js).
- Ko-fi — only contacted when you click the "Buy Me a Coffee" button.
What We Do Not Do
- No user accounts, sign-ups, or logins.
- No first-party analytics or fingerprinting scripts.
- No tracking cookies.
- No advertising or ad-network integrations.
- No selling, sharing, or transferring of any user data — because we don't collect any.
Open Source
The complete source code is available on
GitHub,
so you can verify the privacy claims above. If you find something that contradicts this policy, please
open
an issue.
Contact
Questions about this policy can be sent via the GitHub repository linked above.
Last updated: May 14, 2026.