Styles settingsAccelerator for WordPress

Styles are separated into two categories:

  • Critical

    It must be loaded before main page content to provide correct page rendering.

  • Non-critical

    It can be loaded after the main page content.

In most cases, all styles are critical as you can see by default settings. But sometimes particular styles should be tuned individually.



  • Optimize loading

    Optimizing by inlining according to sub-options. Due to most styles are critical inlining increases page speed by decreasing request count to our server.

  • Inline as source

    Insert style’s body into src attribute instead of change it to style tag.

  • Group critical, group non-critical

    Grouping increases page speed by decreasing server request count but not all styles are compatible with such operation. If non-critical auto mode is active then critical grouping is always safe.

  • Separate imports

    Extract and process styles that included in other styles by the @import directive.

  • Minify

    Optimizes CSS code to have a smaller size.

  • Fix structure

    Correction of incorrectly nested blocks.


  • Optimize loading

    Just adds CSS font-display: swap attribute to fonts that postpones their loading and increase page content loading speed.

  • Include to critical styles

    On some sites browser might incorrect render postponed fonts that declared in separate CSS file. It can be fixed by enabling this option.


  • Automatically

    Non-critical styles part will be automatically separated from critical ones. Also, specified CSS selectors can be excluded to be part of critical styles.

  • Manual
    • Inlined

      Includes all inline styles.

    • Internal

      Includes all internal (self-hosted, hosted on our site) styles.

    • External

      Includes all external (hosted on the other sites) styles.

    • Exclude

      Styles with URLs, IDs, or bodies matching the specified regular expressions will be treated as critical.

    • Include only

      Only styles with URLs, IDs, or bodies matching the specified regular expressions will be treated as non-critical.

Not needed#

Styles with URLs, IDs, or bodies matching the specified regular expressions will not be loaded.

Corrections for lazy loading scripts#

On some sites layout is depended on scripts. So when scripts loading are delayed, then there may be necessary to adjust layout. It’s a section for defining various styles to correct layout loading before main scripts loading. There are some already predefined elements related to particular site components, that can be used as a samples.

This styles are added to particular page only if scripts delayed loading is enabled, and page is not for AMP.

It’s a list of styles that will be added to the site by defined order. Each item has next options:

  • Enable

    It allows to disable item instead of deleting it.

  • Optional description to identify

    Allows to recognize the goal of specified styles. E.g. what particular problem it solves.

  • Style code

    The style code. Special body’s class can be used in selectors to control styles’ scope:

    • seraph-accel-js-lzl-ing

      This class is removed from body tag when non-critical scripts has been loaded. So, it allows to apply styles only in loading period.

    • seraph-accel-view-XXX

      This class is added to the body tag when views are active. So, it allows to apply styles only in particular view, e.g. on mobiles only. XXX can be cmn (means common view, desktop) or particular slug like mobile from the defined views.

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