Permissions Policy Checker
Use Permissions Policy Checker on AboveTool to parse URLs, headers, DNS/WHOIS text, IPs, and certificates in your browser — free, private, no signup.
Permissions Policy Checker
validates Permissions-Policy (Feature-Policy) directive syntax
Runs in your browser. Live DNS/WHOIS registries are not queried unless a mode explicitly uses a public lookup API.
About Permissions Policy Checker
Permissions Policy Checker validates Permissions-Policy (Feature-Policy) directive syntax. It works by parses feature=() allowlists and flags unknown feature tokens. Empty allowlists disable the feature for all origins. Permissions Policy Checker 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 Permissions Policy Checker for?
Permissions Policy Checker is validates Permissions-Policy (Feature-Policy) directive syntax.
How does Permissions Policy Checker calculate the result?
It calculates parses feature=() allowlists and flags unknown feature tokens.
Any tips for using this calculator?
Empty allowlists disable the feature for all origins.
Is Permissions Policy Checker free on AboveTool?
Yes. Permissions Policy Checker is free to use on abovetool.com with no account required, and results are calculated instantly in your browser.