SECURITYOpen source
Subresource Integrity (SRI) Hash Generator Generate & Verify integrity Attributes for Scripts and Styles
Generate Subresource Integrity hashes for CDN scripts and stylesheets, build the ready-to-paste tag and verify that an existing integrity attribute still matches the file.
The file is downloaded by your browser, so the CDN must send anAccess-Control-Allow-Origin header. Major CDNs do.
The file is read in your browser and never uploaded.