Privacy Policy

Lemmafour is built so that the most private thing about it is the architecture, not a promise: your documents are processed on your device, in your browser. This page explains exactly what stays local, what our servers can see, and what we store.

Your documents stay on your device

All PDF and image processing — merging, splitting, editing, compressing, signing, form filling, converting — runs inside your browser using WebAssembly. When you open a file in a Lemmafour tool:

• The file's contents are not uploaded to our servers for processing.
• The results are generated on your device and saved by you, from your device.
• We cannot read, scan, or retain your documents, because they never reach us.

What is stored in your browser

To survive page refreshes and let you pick up where you left off, Lemmafour can keep working files and generated outputs in your browser's local storage (IndexedDB and localStorage) on your device only. Your theme preference is stored the same way. You can clear this at any time from the workspace controls or by clearing site data in your browser.

What our servers see

Like any website, loading Lemmafour requests the app's pages, scripts, fonts, and WebAssembly modules from our hosting provider. Standard web server logs (IP address, requested URL, browser user agent, timestamp) may be produced by the hosting infrastructure for security and reliability. These logs relate to loading the app itself — they do not contain your documents or their contents.

Analytics and tracking

Lemmafour currently ships no analytics scripts, no advertising trackers, and no third-party tracking cookies. If we ever add privacy-respecting, aggregate analytics to understand which tools are used, we will update this page first and it will never involve your document contents.

Payments (future paid features)

If you purchase a paid plan when one is offered, payment is handled by a payment processor (such as Stripe); we receive only what is needed to grant your access (for example, a receipt reference and entitlement status), never your full card details. Paid features will not change the local-processing model: your documents still will not be uploaded.

Your rights

Because we do not hold your documents or maintain accounts today, there is typically nothing for us to delete or export on your behalf — your data is under your control on your device. For any privacy question or request, contact us at the address on the contact page.

Who we are

Lemmafour is operated by [OPERATOR NAME / ENTITY], [JURISDICTION]. This policy may be updated as the product evolves; material changes will be reflected in the date above.