SRI Hash Generator

Generate Subresource Integrity (SRI) hashes for your CSS and JavaScript assets so browsers can verify third-party files have not been tampered with. Paste code, upload a file, or fetch a URL, then copy a ready-to-use integrity="sha384-..." attribute for your <script> or <link> tag. Hashing is done locally with the Web Crypto API.

Why choose SRI Hash Generator?

The SRI Hash Generator quickly creates Subresource Integrity attributes for JavaScript and CSS assets, ensuring third-party files loaded via CDNs have not been tampered with. Because hashing is performed locally in the browser using the Web Crypto API, your source code and files remain private and secure without being uploaded to an external server.

Good to know: For large automated build pipelines or continuous integration workflows, command-line tools or build plugins that generate SRI hashes automatically may fit better than a manual web utility.

How to Use SRI Hash Generator

Secure your website by generating Subresource Integrity hashes for your CSS and JavaScript files using the Web Crypto API.

1. 1

   Select your asset input method

   Choose whether to paste your code directly, upload a local file, or fetch a remote asset via URL.

2. 2

   Provide the script or stylesheet content

   Input the JavaScript or CSS data into the generator to begin the local hashing process.

3. 3

   Generate the SHA-384 integrity hash

   The tool uses the Web Crypto API to calculate the secure hash locally in your browser.

4. 4

   Copy the generated integrity attribute

   Copy the formatted integrity string and paste it into your HTML <script> or <link> tags.

Estimated time: PT1M

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SRI Hash Generator: Secure Your Scripts and Stylesheets

Generate SHA-384 Subresource Integrity hashes for CSS and JS. Protect your site from CDN tampering with our free SRI Hash Generator. Secure your assets today.