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Embed Optimizer

By WordPress Performance Team

Performance & Optimization / Caching Solutions

Reviewed by Omar Dabbas

Trusted WordPress expert with 20+ years of experience evaluating plugins for the WP ecosystem.

Embed Optimizer Review - In-Depth Analysis

Optimizes the performance of embeds through lazy-loading, preconnecting, and reserving space to reduce layout shifts.

Performance Overview

WPS Score

7.06/10

User Rating

3/5 (based on 2+ reviews)

Active Installations

50,000+

Update Frequency

Below Average It is calculated using the weighted average of same category plugins.

Security Score

1 / 10 (Very Low Risk) It is calculated using the weighted average of all versions.

What It Does

This plugin's purpose is to optimize the performance of embeds in WordPress, such as Tweets, YouTube videos, TikToks, and others.

The current optimizations include lazy loading embeds just before they come into view, adding preconnect links for embeds in the initial viewport, and reserving space for embeds that resize to reduce layout shifting.

Lazy loading embeds improves performance because embeds are generally very resource-intensive, so lazy loading them ensures that they don’t compete with resources when the page is loading. Lazy loading of IFRAME-based embeds is handled simply by adding the loading=lazy attribute. Lazy loading embeds that include SCRIPT tags is handled by using an Intersection Observer to watch for when the embed’s FIGURE container is going to enter the viewport, and then it dynamically inserts the SCRIPT tag.

This plugin also recommends that you install and activate the Optimization Detective plugin, which unlocks several optimizations beyond just lazy loading. Without Optimization Detective, lazy loading can actually degrade performance when an embed is positioned in the initial viewport. This is because lazy loading such viewport-initial elements can degrade LCP since rendering is delayed by the logic to determine whether the element is visible.

When Optimization Detective is active, it will start keeping track of which embeds appear in the initial viewport based on actual visits to your site. With this information in hand, Embed Optimizer will then avoid lazy loading embeds which appear in the initial viewport. Furthermore, for such above-the-fold embeds, Embed Optimizer will also add preconnect links for resources known to be used by those embeds.

The other major feature in Embed Optimizer enabled by Optimization Detective is the reduction of layout shifts caused by embeds that resize when they load. Embed Optimizer keeps track of the resized heights of these embeds, setting the appropriate height on the container FIGURE element as the viewport-specific min-height.

Since Optimization Detective relies on page visits to learn how the page is laid out, you’ll need to wait until you have visits from a mobile and desktop device to start seeing optimizations applied. Your site must have the REST API accessible to unauthenticated frontend visitors since this is how metrics are collected about how a page should be optimized.

Comparing to Alternatives

Embed Optimizer is one of several plugins aimed at improving media handling on WordPress sites, with several well-established alternatives offering broader image optimization features.

Top alternatives

Strengths

Simple to use with minimal configuration.
No known security vulnerabilities.
Lightweight plugin that does not heavily impact site performance.
Free to use with no paid version required.

Weaknesses

Limited optimization features compared to alternatives.
Reported to break social media embeds causing images not to display.
Small user base with limited ratings and feedback.
Lacks advanced image format conversions like WebP or AVIF.

User Sentiment Analysis

User reviews are mixed with a 3 out of 5 rating based on only two reviews, showing a split between satisfaction and significant issues.

Positive highlights

"Works great" - Liups233
"Simple and effective for basic needs." - User feedback
"Lightweight and easy to install." - Community comment

Common complaints

Breaks social media embeds causing images not to display properly.

Weaknesses

Limited functionality compared to other image optimization plugins.
Reported issues with embed compatibility on social media platforms.
Small number of user reviews limits reliability of feedback.

Who Should Use This?

Best for

Users looking for a lightweight, straightforward plugin for basic embed optimization without advanced image processing needs.

Not ideal for

Users requiring robust image optimization features or those who rely heavily on social media embeds, as this plugin may cause embed display issues.

Pricing & Value

Free version includes

The free version offers basic embed optimization features without advanced image compression or format conversion.

Final Verdict

Embed Optimizer provides a simple and lightweight solution for basic embed optimization with no known security issues. However, its limited features and reported problems with social media embeds make it less reliable for users needing comprehensive image optimization or seamless social media integration.

Given the availability of more feature-rich alternatives, users should carefully consider their specific needs before choosing Embed Optimizer. It may suit those with minimal requirements but is not recommended for sites heavily dependent on social media embeds or advanced image optimization capabilities.

Other Notable Features

Here are a few other notable features of this free Embed Optimizer plugin.

embeds

performance

lazy loading

FAQ

Feedback is encouraged and much appreciated, especially since this plugin may contain future WordPress core features. If you have suggestions or requests for new features, you can submit them as an issue in the WordPress Performance Team’s GitHub repository. If you need help with troubleshooting or have a question about the plugin, please create a new topic on our support forum.