Subresource Integrity (SRI) Manager
Adds Subresource Integrity (SRI) attributes to your page's elements for better protection against JavaScript DDoS attacks.
2.9(11 reviews)
·1.0K+ active installs·Updated 5 years agoAs of April 2026, Subresource Integrity (SRI) Manager is a WordPress SRI plugin with 1.0K+ active installations and a 2.9/5 rating from 11 reviews. It has been downloaded 17K+ times in total. Requires WordPress 4.1+ and PHP false+. Available on WordPress.org since 2015. Last updated 5 years ago — may have compatibility concerns. Downloads are up 21% this week. Top alternative: Auto SRI.
2.9/511 reviews
1.0K+active installs
17K+total downloads
11 yearssince 2015
Overview
A WordPress plugin for easily adding a Subresource Integrity (SRI) declaration to any third-party content your pages load. The standards-based integrity attribute is a defense-in-depth best practice currently making its way into browsers. This plugin closely tracks the W3C draft.
Currently, the plugin automatically detects any third-party resources (like JavaScript libraries) and will make a SHA-256 hash of the content. It remembers this hash (until you uninstall the plugin or delete the hash from the admin interface), and modifies your page’s <script> and <link> elements on-the-fly. This way, your visitor’s Web browsers can automatically ensure that the specific library you’re using is the one they’re loading.
Using this plugin can dramatically reduce…
Ratings & Reviews
2.911 reviews
5 ★
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5
Recent Reviews
Plugin appears to abandoned, long time no updates, appears non functional.
by Kevin de Bie·1 year ago
Plugin doesn’t appear to do anything/work on any of my WordPress 6 installations.
I have been testing with Mozzilla’s observatory.
- This topic was modified 1 year, 8 months ago by Kevin de Bie. Reason: Clarification
- This topic was modified 1 year, 8 months ago by Kevin de Bie.
I really want to like this, but unfortunately does not work in my environment
by darkknight83·2 years ago·2 replies
in the age of page-caching (wp-super-cache) and minification/consolidation of scripts/styles (autoptimization), this probably needs to be hooked in after all that gets done otherwise the hash generated won’t match. Ideally, this tests the consolidated minimized script locally even before it gets uploaded to the CDN to cover the pathological case that the script gets mutated at the CDN even before it gets it’s SHA hash done.
Works on WordPress 5.8.1
by apollosk·4 years ago
The plugin works as advertised, out of the box. Kudos to the developers.
It would be smart to update the compatibility info, Tested up to:…
Plugin Conflicts with BrainTree Payments
by forkenbrock·5 years ago·1 reply
Plugin caused my BrainTree payment gateway to fail payments.
interferes with paymaent gateway
by techguysa·5 years ago·4 replies
Using the Plug in Yoco Payment Gateway by Yoco for credit cards and this plug in prevents Yoco from poping up and then redirects to the confirm order page like if it was an EFT when customer make payment via card.
This prevents card payments. So I disabled it.
This worked but im not sacrificing a function to kill revenue. There must be another way had another way just cant remember what the htaccess code was for this.
- This topic was modified 5 years, 5 months ago by techguysa. Reason: Author Rude
Download Trends
Today: 8Yesterday: 9This week: 57Period total: 2K
Compatibility
| WordPress | 4.1+ requiredTested up to 5.6.17 |
| PHP | false+ required |
Version Adoption
v0.4
98.7%
v0.3
1.3%
Top Alternatives to Subresource Integrity (SRI) Manager
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Frequently Asked Questions
Changelog
Version 0.4.0
- Stricter parsing for stylesheet tags; the
filterTagfunction now requires a third parameter.
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.