Support » Plugin: Fast Velocity Minify » Merged files are render blocking in phone, but not in desktop

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  • Plugin Author Raul P.

    (@alignak)

    Hi,

    Any external css or js files in the header, are always render blocking.
    FVM will merge and minify those (reducing the amount of files), but they are still render blocking.

    Also mobile and desktop optimization is measured differently, so what may not be render blocking on desktop, might be on mobile via google pagespeed insights.

    Sometimes, even if you defer the scripts properly, pagespeed compares the DOM loading result with the Fully Loaded result.
    For that reason, it may detect that the deferred files are needed for the final look of your theme to be completed (and show the render blocking message).

    Desktop also downloads faster than mobile, so it can also be a reason for it to be render blocking on one and not the other.

    The plugin has options to defer loading of javascript, but you need to inline css for the css part (if it’s small enough)… because if you’re css is too big, you will get other errors, such as prioritize visible content.

    This plugin is meant to be used by advanced users, developers, or anyone that understands what the settings do and mean.

    If you’re not familiar with speed optimization, you can read our faqs at https://wordpress.org/plugins/fast-velocity-minify/#faq

    Bare in mind that speed optimization is a complex job, so you may need to get a developer to help you do speed optimization, including tweaking or fixing your theme changes so that FVM can work as normal (especially important if you changed your header and footer files).

    There are cheap devs available on freelancer.com but also on upwork.com that can help you further with speed optimization, but if any question about FVM just let me know.

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