An ad-light, privacy-first certificate maker
Your certificate never leaves your device.
Ads are minimal — and never see your certificate
The free tier of Cert Tools shows at most a single ad unit, placed below the fold on the home page and below the tool/output area on tool pages. There are no ads here, on /about, or on /unlock. Ads never see your certificate and never interrupt a download — the same strict connect-src 'self' Content-Security-Policy that keeps every certificate on-device applies everywhere, and the names you type are processed locally and never uploaded.
A fully ad-free Pro tier is coming
A future Cert Tools Pro tier will remove ads entirely and add batch certificate generation from a CSV, premium templates, and 300dpi + PDF export — all still 100% client-side, with no upload. It is not available yet.
Every tool works fully and free today, with no key required.