Source review · Local browser tool
Subresource Integrity Hash Generator
Create SHA-384 or SHA-512 integrity metadata for a local script, stylesheet or pasted resource body.
Use the tool
Enter only data you are authorised to inspect. The result is a focused technical check, not a certification or full vulnerability assessment.
What it checks
Clear scope. Reproducible output.
- Exact bytes hashed locally
- Standards-compatible base64 digest
- Ready-to-copy script and link attributes
Questions
Does Subresource Integrity Hash Generator upload my input?
No. The working tool runs in the current browser tab. Avoid browser extensions or shared devices when handling sensitive material.
Does a passing result prove my system is secure?
No. It proves only the checks described on this page against the input you supplied. Server behaviour, business logic and runtime vulnerabilities require separate authorised testing.
Why is the result different from a live scanner?
This tool analyses pasted or local data. A live scanner observes network responses, DNS, TLS and redirects, so its evidence and scope are different.