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Free Plugin by Seraphinite Solutions v2.29.21

Seraphinite Accelerator

Turns on site high speed to be attractive for people and search engines.

Seraphinite Accelerator

The facts

Rating
4.8★ from 475
Active installs
50k+
Price
Free
Last updated
23 Aug 2026
Added
May 2021
Requires WP
4.5
Tested up to
WP 7.0.4
Requires PHP
7.1
Downloads
897,370

Our analysis

AI-assisted

Seraphinite Accelerator is a WordPress plugin designed to enhance site speed and performance. It features a high-performance cache engine, security measures against brute force attacks, and compatibility with various optimization plugins. The plugin is suitable for users looking to improve their website's loading times and overall efficiency, particularly in eLearning and online course environments.

The plugin supports multiple content delivery networks (CDNs), lazy loading for media, and various encoding methods. It offers both free and premium features, with the free version providing essential caching and optimization functionalities, while premium features include remote optimization and prioritized support.

Best for: This plugin is best for website owners looking to enhance speed and performance, especially in online learning platforms.

What it does well

  • High-performance file cache engine
  • Supports multiple CDN configurations
  • Includes lazy loading for images and videos
  • No site registration required
  • Compatible with various optimization plugins

Where it falls short

  • Limited information on specific features and usage
  • Premium features require additional payment

Verdict

Seraphinite Accelerator offers useful caching and optimization features for WordPress sites, particularly those focused on eLearning. However, the lack of detailed information may limit its appeal for some users.

From the developer

Seraphinite Solutions's own description of Seraphinite Accelerator, lightly tidied.

Turns on site high speed to be attractive for people and search engines. See more how to use it.

TO USE FREE ADDITIONAL FEATURES PLEASE INSTALL THE FREE EXTENDED PLUGIN VERSION BY FOLLOWING ONSCREEN PLUGIN’S INSTRUCTIONS.

We kindly ask you to post reviews to share experience about your site speed – it helps improving the plugin.

Features

  • Fastest cache engine
    A high-performance file cache engine works as fast as possible on your site.
  • High load tolerance
    Cache revalidation uses minimum resources.
  • Security
    User cached sessions are protected from brute force attacks.
  • Optimization plugins compatibility
    Many 3rd party optimization plugins can be used.
  • Various range of encoding
    GZip, Deflate, Compress, Brotli, Uncompressed are supported.
  • Cache data compression
    Decreases storage data occupation.
  • Browser cache
    Leverage browser caching via .htaccess to reduce server load.
  • Caching separation
    Data is different for various devices and environments.
  • No site registration and quoting
    There is no any site registration and no time or page count quota.

Free additional features

  • Multiple CDN
    Rearrange balance on multiple CDNs to be faster and decrease costs.
  • Lazy revalidation
    Pages speed is always highest even while content updating.
  • Cache storage space optimization
    The same parts are stored uniquely, which significantly saves space.
  • Users cache
    Smart caching of user’ dependent pages like shop cart, online courses, etc.
  • HTML error-correcting and checking
    Managing unescaped scripts, misplaced and lost tags.
  • Content size optimization
    Minification of Java-scripts, styles (CSS), HTML.
  • Media load optimization
    Lazy loading of images, video, frames, fonts.
  • Scripts load optimization
    Java-scripts and styles (CSS) lazy loading, inlining, and deferring.

Premium features

  • Remote optimization
    Optimization can be performed remotely on our cloud servers. Includes CPU seconds: 1000/hour, 10000/day and 300000/month.
  • No page views limits
    There is no limit of 5000 page views per month. In free version after reaching that limit the product will just cache pages without optimization.
  • No banner
    There is no banner at the bottom of the site.
  • No promotions
    No promotions of other related plugins.
  • Support
    Personal prioritized support (3 hour per site). Additional support is for 30 EUR per hour. All issues due to product are always fixed for free.

More details.

Requirements

  • WordPress 4.5 or higher.
  • PHP 7.1 or higher.
  • Browser (Google Chrome, Firefox, IE).

Compatibility

Read the full description on the official page →

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