Subresource Integrity (SRI) Hash Generator
Generate W3C-compliant SHA-256, SHA-384, and SHA-512 integrity hashes for CDN assets.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use Subresource Integrity (SRI) Hash Generator
Paste your script/CSS code, upload a local file, or fetch a remote CDN URL.
The tool uses browser-native Web Crypto API to generate SHA-256, SHA-384, and SHA-512 base64 digests.
Copy the pre-configured <script> or <link> tag with integrity and crossorigin attributes.
Frequently Asked Questions
What is Subresource Integrity (SRI)?
SRI is a W3C security standard that enables web browsers to verify that files fetched from CDNs or third-party servers have not been manipulated or compromised.
Which hash algorithm is recommended for SRI?
The W3C specification recommends SHA-384 as the sweet spot between cryptographic collision resistance and performance.
Related Security & Network Tools
View all →Split master passwords into M-of-N threshold shares with GF(256) math.
Generate cryptographically secure 12, 18, or 24-word seed phrases.
Calculate network address, broadcast, usable host IP range, and masks.
Derive secure keys with customizable iterations, salts, and SHA hashes.