Content is not executed; only explainable static patterns and bounded browser operations are applied.
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Privacy & security
Subresource Integrity (SRI) Hash Generator
Uses Web Crypto to generate a standard `sha384-base64` integrity value from exact local-file bytes or pasted UTF-8 text. SRI detects later resource changes; it does not prove the original resource is safe or correctly owned.
✓ Free✓ No account✓ In-browser
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What does this tool do?
Generate sha256/384/512 SRI integrity values for a local file or text.
APPLICATION AND DECISION GUIDE
Subresource Integrity (SRI) Hash Generator: method and usage
Uses Web Crypto to generate a standard `sha384-base64` integrity value from exact local-file bytes or pasted UTF-8 text. SRI detects later resource changes; it does not prove the original resource is safe or correctly owned.
synthetic or minimized code, configuration, identifiers, or file content you are authorized to review Confirm the shape first with a small example containing no personal data.
evidence locations, severity, false-positive considerations, and the next verification action
Practical steps
- Choose a local file or paste the exact resource text.
- Select an algorithm and generate SRI on-device.
- Test the HTML tag, CORS behavior, and update process in the real environment.
manual review at the source location and independent verification with an appropriate professional security tool or authorized process
This is a pre-check, not a guarantee of identity, security, or regulatory compliance.
Suitable use cases
- Pinning CDN script integrity
- Hashing stylesheets
- Tracking release-artifact changes
LEARN THE WORKFLOW
Guides for this tool
A Security Preflight for Web Projects
Review CSP, SRI, checksums, HTTP behavior, and secret exposure with explainable pre-release checks.
Read guide →Local Security Guide to Web Crypto, RAG, and Prompt Injection
Apply passphrases, HMAC, SRI, CIDR, RAG budgets, and injection pre-scans with correct security boundaries.
Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does Subresource Integrity (SRI) Hash Generator accept?+
synthetic or minimized code, configuration, identifiers, or file content you are authorized to review Choose a local file or paste the exact resource text.
What does Subresource Integrity (SRI) Hash Generator return?+
evidence locations, severity, false-positive considerations, and the next verification action Content is not executed; only explainable static patterns and bounded browser operations are applied.
How should I validate Subresource Integrity (SRI) Hash Generator output?+
manual review at the source location and independent verification with an appropriate professional security tool or authorized process
Does Subresource Integrity (SRI) Hash Generator send or store input on a server?+
Tool input is processed in the active tab. Saving to the Workstation or transferring to another tool is a separate choice. Consider browser extensions and shared devices separately; the privacy page explains advertising and network connections.