SRI Hash Generator
Generate Subresource Integrity hashes for scripts and stylesheets
What SRI Hash Generator does
SRI Hash Generator is a utility that creates Subresource Integrity hashes for external web assets. Users input a file's URL or raw content, and the tool outputs the cryptographic integrity string needed to verify that loaded scripts and stylesheets have not been tampered with. This provides the essential hash attribute for implementing content security policies in web development. The Inventive HQ version offers a straightforward interface focused on generating SRI hashes from URLs or raw text. It processes the specified web resource to calculate the necessary cryptographic hash, serving developers who integrate third-party libraries and need to enhance application security through integrity verification.
How to use the Inventive HQ SRI Hash Generator
- 1
Enter the URL or raw content of the external script or stylesheet into the input field
- 2
Submit the input to generate the Subresource Integrity hash
- 3
Copy the generated hash string for use in your HTML resource tags
- 4
Add the 'integrity' and 'crossorigin' attributes to your script or link tags
- 5
Verify that the loaded asset matches the generated hash to ensure security
Best for
Developers integrating third-party libraries or frameworks who need to implement Subresource Integrity checks to enhance web application security.
Limitations
- No information available on supported hash algorithms (e.g., SHA-384, SHA-512)
- No details provided about crossorigin attribute handling requirements
- No stated limits on URL length or file size for hash generation
SRI Hash Generator FAQ
- How do I use the generated SRI hash in my website code?
- Add the generated hash string to the 'integrity' attribute of your script or link tag, and include the 'crossorigin' attribute if the resource is loaded from a different domain.
- What happens if the external file changes after I generate the hash?
- The browser will detect the mismatch and block the resource from loading, protecting your site from tampered scripts or stylesheets.
- Can I generate an SRI hash for any URL or do I need specific permissions?
- You can generate a hash for any publicly accessible URL, but the browser will only enforce the integrity check if the resource is loaded with the appropriate crossorigin attribute.
- Is the generated hash specific to the file content at the time of generation?
- Yes, the hash is calculated based on the exact file content at the moment of generation; any change to the file will result in a hash mismatch and the resource being blocked.