Tools
Tools for Administrators
Free tools that run entirely in the browser. No upload, no account, no publicly reachable host required - which makes them usable on internal infrastructure.
Runs entirely in your browser
The tool itself loads nothing and sends nothing. Your data is processed in the browser and never leaves the device - verifiable in your browser's network tab.
PKI Toolkit
Available
Sort certificate chains, visualise PKI hierarchies, and review remaining validity - entirely in the browser, without upload. Usable on internal CAs.
Learn more →ZIP Builder for Deployments
Available
Build ZIP archives for Cloudflare, the Chrome Web Store, WordPress, and Shopify in the browser - without __MACOSX, with a root check and limit warnings before the upload instead of after.
Learn more →DMARC RUA Report Viewer
Available
Evaluate DMARC aggregate reports (.xml, .xml.gz, .zip) in the browser - sources, alignment, and deviations at a glance, without upload.
Learn more →Why this is different
Most tools of this kind require either a publicly reachable host or an upload to someone else’s server. For internal infrastructure, neither is an option: a corporate CA, a firewall configuration block, or a DMARC report are not things you hand to a third-party provider.
These tools therefore run entirely in the browser. They embed no third-party scripts, fonts, or libraries, and set connect-src 'none' via Content Security Policy - outbound connections are technically prevented, not merely omitted. Verifiable in your browser’s network tab, in about five seconds.