X.509 inspector
Tree view of a certificate's fields, extensions and signature chain.
Also known as: Certificate viewer.
100% offline · macOS, Windows & Linux · free for personal use
// overview
What it does
X.509 inspector is one of 55 tools in Hexkit, a desktop developer toolbox that runs entirely on your own machine. Tree view of a certificate's fields, extensions and signature chain.
Because Hexkit is a native app rather than a web page, anything you paste into the x.509 inspector stays local — there are no uploads, no accounts and no telemetry. You can inspect and preview content even with the network turned off, which makes it safe for tokens, keys and production data.
// steps
How to use X.509 inspector
- 1
Open Hexkit and select "X.509 inspector", or press the command-palette key and start typing its name.
- 2
Paste or drop in the content you want to inspect. Tree view of a certificate's fields, extensions and signature chain.
- 3
Read or copy the result. Everything is computed locally by Hexkit's Rust core, so nothing is ever uploaded.
Tip: the command palette opens any tool in one keystroke.
// faq
Frequently asked questions
- Is X.509 inspector free?
- Yes. X.509 inspector is part of Hexkit, which is free for personal and non-commercial use on macOS, Windows and Linux.
- Does X.509 inspector work offline?
- Completely. Hexkit runs every tool locally with no network access, so X.509 inspector works on a plane or an air-gapped machine.
- Is my data uploaded anywhere?
- No. Hexkit makes no network calls and has no telemetry — whatever you paste stays on your computer.
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Related tools
Use X.509 inspector without sending your data anywhere.
X.509 inspector ships inside Hexkit — a free, offline developer toolbox for macOS, Windows and Linux. No account, no uploads.