Privacy

The app collects nothing

CertConvert runs entirely on your own computer. It has no analytics and no telemetry, and it does not send your certificates, keys or any usage information anywhere. There are no accounts and no sign-in. The certificates and keys you open are read in memory and are never uploaded.

What it stores locally

The only file CertConvert creates on its own is a single small settings file that holds one preference — whether to check for updates on launch. Nothing sensitive is kept in it, and you can delete it at any time; the app recreates it with defaults.

Platform	Settings file
macOS	~/Library/Application Support/CertConvert/settings.json
Windows	%APPDATA%\CertConvert\settings.json

Beyond that, CertConvert writes only the files you explicitly save. It keeps no cache, no logs and no history.

The one network action: checking for updates

The only time the app uses the network is when it checks GitHub for a newer version. This is off by default and otherwise happens only when you choose Check For Updates (or run certconvert update). The check contacts GitHub’s public releases API to compare version numbers and, if you ask it to, download a release; GitHub processes that request under its own privacy policy. No personal data is sent, and this is the only outbound connection the app ever makes.

This update check exists only in builds you compile from source. Copies from the Mac App Store or Microsoft Store receive updates through the store itself and make no such check.

This website

This website uses Google Analytics (GA4) to understand which pages are viewed and which download links are followed. It runs only if you accept: a cookie banner asks on your first visit.

Until you accept, nothing is loaded from Google and nothing about your visit is sent to it. If you decline, or simply ignore the banner, that stays true. If you accept, the Google tag loads and sets cookies so that visits can be counted. Your choice is remembered in your browser’s local storage, and you can change it at any time via this link, which also removes the analytics cookies.

Analytics is not used for advertising, and never to identify you personally. Google processes this data under its own privacy policy. Standard server logs may be kept by the hosting provider for security and reliability.

Contact form

If you message us through the contact form, the name, email address and message you provide are emailed to our support mailbox and used only to read and reply to your enquiry. We don’t add you to any mailing list. The form may be protected by Cloudflare Turnstile, which checks the submission isn’t automated; where enabled, Cloudflare processes limited technical data for this under its own privacy policy and sets no tracking cookies.

Downloads and donations

CertConvert is distributed through the Mac App Store and the Microsoft Store, which process the purchase and download under Apple’s and Microsoft’s own privacy policies. Donations are handled by Ko-fi; any payment details are processed by Ko-fi and its payment providers under their own privacy policies — they are never seen or stored by CertConvert.

Who we are (data controller)

CertConvert and this website are provided by Asil Software Limited, a company registered in England and Wales (company number 17425736), whose registered office is 71–75 Shelton Street, Covent Garden, London WC2H 9JQ. For the limited data described above — this website and the contact form — Asil Software Limited is the data controller.

On the Microsoft Store the app is currently listed under the name of its developer, Jermaine Walkes.

Contact

Questions about privacy? Email privacy@certconvert.com.

Governing law

This privacy statement is governed by the laws of England and Wales.

Trademarks

OpenSSL is a trademark of the OpenSSL Software Foundation. CertConvert is an independent project and is not affiliated with, sponsored by or endorsed by the OpenSSL Software Foundation. Any reference to OpenSSL is for identification and comparison only.