Your draft stays with you

Effective date: 15 November 2026. This policy explains what information Copublio handles. Copublio is an independent service based in North Sumatra, Indonesia. Contact: support@copublio.com.

Your manuscript is checked on your device

When you choose a document or paste text, the checker reads and analyzes it inside your browser. The text is not sent to us or to anyone else, is not saved in browser storage, and is cleared when you select “Clear document” or close the page. The page is built so that it cannot send network requests while it checks (its security policy blocks them).

Reports you download are saved by your browser wherever you choose. We never see them unless you send them to us.

Information the website host receives

Like any website, the server that delivers Copublio's pages receives technical information when your browser requests them, such as your IP address, browser type, the pages requested and the time. This is handled by our hosting and network provider, Cloudflare, Inc., to deliver and protect the site, under its own privacy policy and retention periods. We may look at the aggregate traffic totals Cloudflare provides (for example, the number of visits per day) to understand how much the checker is used; these totals do not identify you. Copublio does not use advertising trackers, analytics scripts or tracking cookies.

When you contact us

If you email us, we receive your email address and whatever you include. We use it to answer you and improve the checker, and we keep it for up to 24 months after the conversation ends, unless you ask us to delete it sooner. Messages to support@copublio.com pass through Cloudflare Email Routing to a mailbox provided by Yahoo, which process them on our behalf. Please do not send a full manuscript unless you have to; a short example that shows the problem is usually enough.

Paid features

If paid features are introduced, payment details will be handled by the payment provider, not by Copublio. We would receive only what is needed to provide access, such as your email address and purchase record. This section will be completed before any purchase is possible. No payment information is collected at present.

Your choices and rights

You can use the checker without an account and without giving us personal information. You can ask us what information we hold about you from support emails, and ask us to correct or delete it, by writing to support@copublio.com. Depending on where you live, data-protection law (including Indonesia's Personal Data Protection Law, Law No. 27 of 2022, and laws such as the GDPR where they apply) may give you further rights, such as objecting to processing or complaining to a supervisory authority. We will answer requests within 30 days.

Changes

If the way Copublio handles information changes, for example if a feature ever needs to send data to a server, we will update this policy and say so clearly in the checker before that feature is used.