Security Headers Grade Calculator
Use Security Headers Grade Calculator on AboveTool to parse URLs, headers, DNS/WHOIS text, IPs, and certificates in your browser — free, private, no signup.
Security Headers Grade Calculator
grades a site header dump with a simple A–F security score
Runs in your browser. Live DNS/WHOIS registries are not queried unless a mode explicitly uses a public lookup API.
About Security Headers Grade Calculator
Security Headers Grade Calculator grades a site header dump with a simple A–F security score. It works by awards points for strong headers and deducts for dangerous defaults. Grades are educational — not a substitute for a full pentest. Security Headers Grade Calculator runs free in your browser at abovetool.com — no signup, instant results.
How to use
- Enter the inputs for this network utility (two IPs, a single address, headers, PEM, and so on).
- Click Compare IPs, Lookup, Convert, or Run depending on the tool.
- Review the on-page result (including bit diffs or maps where shown), then copy or download.
Features
- Mode-specific forms for headers, URLs, IPs, DNS, and certificates
- Client-side parsers and builders — no upload required
- Copy or download results instantly
- Unique tool copy with practical tips for each utility
Frequently asked questions
What is Security Headers Grade Calculator for?
Security Headers Grade Calculator is grades a site header dump with a simple A–F security score.
How does Security Headers Grade Calculator calculate the result?
It calculates awards points for strong headers and deducts for dangerous defaults.
Any tips for using this calculator?
Grades are educational — not a substitute for a full pentest.
Is Security Headers Grade Calculator free on AboveTool?
Yes. Security Headers Grade Calculator is free to use on abovetool.com with no account required, and results are calculated instantly in your browser.