PluginSift

Speed Up – Optimize CSS Delivery vs Site Scripts & Speed Manager (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Speed Up – Optimize CSS Delivery

Speed Up – Optimize CSS Delivery

5(8)

1.0K+ active installs

Free

Updated 3 years ago
View Speed Up – Optimize CSS Delivery
VS
Site Scripts & Speed Manager

Site Scripts & Speed Manager

0(0)

0 active installs

Free

Updated 3 days ago
View Site Scripts & Speed Manager

Quick Verdict

As of April 2026, Speed Up – Optimize CSS Delivery has a higher user rating (5/5 from 8 reviews) and leads in active installations (1.0K+ vs 0). Both are free WordPress plugins. Speed Up – Optimize CSS Delivery has accumulated 59K+ total downloads while Site Scripts & Speed Manager has 48.

Detailed Comparison

Rating
5/5Speed Up – Optimize CSS Delivery
◄
Site Scripts & Speed ManagerN/A
Total Reviews
8Speed Up – Optimize CSS Delivery
◄
Site Scripts & Speed Manager0
Active Installs
1.0K+Speed Up – Optimize CSS Delivery
◄
Site Scripts & Speed Manager0
Total Downloads
59K+Speed Up – Optimize CSS Delivery
◄
Site Scripts & Speed Manager48
Support Resolution
N/ASpeed Up – Optimize CSS Delivery
Site Scripts & Speed ManagerN/A
Last Updated
3 years agoSpeed Up – Optimize CSS Delivery
►
Site Scripts & Speed Manager3 days ago
First Released
2016Speed Up – Optimize CSS Delivery
Site Scripts & Speed Manager2026
Age
10 yearsSpeed Up – Optimize CSS Delivery
Site Scripts & Speed Manager1 month
WP Requires
3.5+Speed Up – Optimize CSS Delivery
Site Scripts & Speed Manager5.8+
PHP Requires
false+Speed Up – Optimize CSS Delivery
Site Scripts & Speed Manager7.4+
Business Model
FreeSpeed Up – Optimize CSS Delivery
Site Scripts & Speed ManagerFree
Latest Version
1.0.11Speed Up – Optimize CSS Delivery
Site Scripts & Speed Manager2.3.0

Rating Breakdown

Speed Up – Optimize CSS Delivery

5/5(8 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Site Scripts & Speed Manager

0/5(0 reviews)
5
0%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Speed Up – Optimize CSS Delivery Reviews

by Wilson Santana

5 estrelas. Funciona muito bem.

Muito bom.

by mamadesign

This plug-in is a blessing

This plug-in is a blessing This plug-in is the best! We have to give a big prize to the person who created this plug-in. Thank you very much.

by castria

Works great!

Does what it says on the tin, which Google pagespeed likes a lot.

Site Scripts & Speed Manager Reviews

No reviews yet

Frequently Asked Questions

Is Speed Up – Optimize CSS Delivery or Site Scripts & Speed Manager more popular?
Speed Up – Optimize CSS Delivery has 1.0K+ active installations while Site Scripts & Speed Manager has 0. Speed Up – Optimize CSS Delivery is the more widely-used plugin as of April 2026.
Which has better ratings — Speed Up – Optimize CSS Delivery or Site Scripts & Speed Manager?
Speed Up – Optimize CSS Delivery has a 5/5 rating from 8 reviews, while Site Scripts & Speed Manager has a 0/5 rating from 0 reviews.
Are Speed Up – Optimize CSS Delivery and Site Scripts & Speed Manager free?
Speed Up – Optimize CSS Delivery is free and Site Scripts & Speed Manager is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Speed Up – Optimize CSS Delivery or Site Scripts & Speed Manager?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Speed Up – Optimize CSS Delivery was last updated 3 years ago and Site Scripts & Speed Manager was last updated 3 days ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.