[WordPress] 外掛分享： PageSpeed Ninja – Cache, Minify, Defer CSS JavaScript, Critical CSS, Optimize Images, Convert WebP

WordPress 外掛 PageSpeed Ninja – Cache, Minify, Defer CSS JavaScript, Critical CSS, Optimize Images, Convert WebP 的封面圖片。

前言介紹

外掛協作開發者

pagespeed |

外掛標籤

minify css | performance | convert webp | minify javascript | defer css javascript |

內容簡介

PageSpeed Ninja是一款終極的WordPress性能外掛程式。您只需點擊一下，就可以使您的網站在桌面和手機上加載速度更快，解決Google PageSpeed Insights中的問題。

輕鬆啟用Gzip文件壓縮
修正渲染阻塞的CSS和JavaScript
改進關鍵呈現路徑並自動產生上部分關鍵CSS
縮小HTML、JavaScript和CSS文件
合併和內嵌Javascript和CSS
延遲加載Javascript和CSS
優化樣式/腳本順序
壓縮所有圖像以優化大小
通過選擇性的低質量圖像占位符來延遲加載圖像
利用瀏覽器緩存和服務器端緩存
通過包括AMDD數據庫的精準優化，幾乎涵蓋了10,000個不同的移動設備瀏覽器 - 這是最全面的移動設備數據庫之一，使圖像優化更好。
根據10多年以行動優化200,000個網站的經驗，還有更多功能。

為什麼要使用PageSpeed Ninja？

我們已經有10多年的行動網站優化經驗了（您可能已經了解我們受歡迎的項目之一Lazy Load XT). PageSpeed Ninja這個WordPress外掛程式是我們在行動設備上對200,000個網站進行性能優化10多年經驗的結果。我們相信您不會在其他地方找到類似的易於使用的全功能性能提升功能包。

我們建立了很多獨特的功能，以確保您的網站加載超快，如上部分關鍵CSS生成方法，在任何其他外掛程式中都沒有看到。

我們非常樂意收到您的反饋 - 請隨時向我們發送您的問題、想法和建議。

安裝前

根據我們的統計數據，我們的插件可以提高5個網站中4個的速度。然而，在某些情況下，某些主題和插件的組合（尤其是與快取和優化相關的組合）會導致不兼容性問題。因此，我們的外掛程式可能不適合每個人使用。為了讓您看到PageSpeed Ninja在您的網站上可以如何運作，我們創建了一個簡單的工具，在安裝之前您可以在其中測試您的網站。我們強烈建議您先訪問PageSpeed.Ninja並測試您的網站。

卸載

當刪除該插件時，它將自動將您的網站上的所有設置恢復到安裝此插件之前的狀態。它還會還原所有優化的圖像，並刪除/s目錄下優化的JS和CSS文件。同時，所有.htaccess文件中的更改都將被還原。
請注意，如果在此期間其他插件存在衝突，例如其他插件動態創建/編輯/刪除文件（包括由此插件備份的文件），則此恢復可能無法可靠地工作。

反饋、錯誤報告、日誌記錄問題

我們歡迎所有問題、評論、建議、問題報告。聯繫我們以將您添加到我們的私人測試人員Facebook群組中。

PageSpeed Ninja會在wp-content/plugins/pagespeedninja/includes/error_log.php文件中記錄所有php錯誤（在PageSpeed Ninja設置頁面的高級選項卡中的故障排除部分中查看）
如果您發現問題，如果您能同時發送該檔案，那就太好了。

原文外掛簡介

PageSpeed Ninja is the ultimate performance plugin, specially designed to tackle slow loading times on your website on both desktop and mobile platforms. This plugin effortlessly addresses Google PageSpeed Insights issues and significantly improves Core Web Vitals.
This tool offers a range of features designed to optimize your website’s performance:

Compression: Implement Gzip and Brotli compression for faster load times.
Resolve Render-Blocking Issues: Address render-blocking CSS and JavaScript issues to streamline loading.
Enhancing Critical Rendering Path: Automatically generate critical CSS for above-the-fold content to improve the critical rendering path.
Minification: Reduce load size by minifying HTML, JavaScript, and CSS files.
Resource Bundling: Combine and inline JavaScript and CSS to reduce server requests.
Defer Loading: Prioritize content rendering by choosing to defer CSS and JavaScript loading.
Optimize Images: Improve loading speed with optimized image formats.
Efficient Image Formats: Convert to WebP format for faster performance.
Lazy Load: Optimize initial load with image lazy loading and optional low-quality placeholders.
Optimize Google Fonts: Streamline Google Fonts loading for quicker rendering.
Cache Leveraging: Utilize browser and server-side caching for improved performance.
Benefit from 10+ years of experience optimizing 200,000+ mobile-friendly websites to offer even more enhancements, including image optimization, caching, and a suite of front-end and back-end performance improvements.

This plugin is your go-to solution for reducing slow loading times, improving SERP optimization, and boosting website speed, making it an essential tool for performance optimization and SEO.
Why Choose PageSpeed Ninja?
Are you looking to improve your website’s performance and Google search rankings? PageSpeed Ninja excels in core web vitals and SEO optimization. For over a decade, we’ve been at the forefront of mobile web optimization. You might be familiar with one of our popular projects, Lazy Load XT. PageSpeed Ninja represents our expertise gained from optimizing the performance of over 200,000 websites on mobile devices. We believe you won’t find a similar, user-friendly, all-in-one solution for boosting the performance your website.
Benefit from our suite of unique features designed to turbocharge your site’s loading speed. From innovative critical CSS generation for above-the-fold content to implementation of tagged page caching, we ensure lightning-fast load times that improve critical performance metrics such as Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and more.
Before You Install
Our statistics indicate that the plugin improves the speed of 4 out of 5 websites. However, certain theme and plugin combinations, especially those related to caching and optimization, may lead to compatibility issues. Therefore, our plugin might not suit every website. To preview how PageSpeed Ninja could benefit your site, we’ve developed a simple tool that allows you to test it before installing it. We highly recommend that you visit PageSpeed.Ninja and run a test of your website beforehand. Please note: To accurately test your site on PageSpeed.Ninja, it’s crucial to temporarily disable any optimizing plugins. This test requires raw data to apply its own optimization.
Features
Presets
People who own, design, or develop websites are constantly looking for efficient ways to boost performance without getting down in tweaking every single setting. This is precisely where the “Presets” feature of the PageSpeed Ninja comes in.
PageSpeed Ninja offers five different presets, each tailored to specific optimization needs:
– Optimal: suitable for the majority of websites,
– Safe: prioritizes compatibility (only a minimal subset of optimizations is enabled),
– Compact: focuses on saving disk space (image optimization and convert to WebP are disabled),
– Ultra: aims for maximum optimization (but may be incompatible with some themes and plugins),
– Experimental: reserved for testing new, possibly less stable features.
PageSpeed Ninja Settings Groups
PageSpeed Ninja organizes its settings into groups aligned with the Google PageSpeed Insight categories. Using the data from the Google PageSpeed Insight speed analysis, the plugin categorizes the settings groups into three distinct classes: Should Fix, Consider Fixing, and Passed.
Within the General settings, users can easily enable or disable each settings group (specific settings depend on the preset selected), and the Advanced settings page offers fine-tuning all settings according to specific preferences.
Each switch in the settings interface is color-coded to reflect its impact on your website’s PageSpeed Insights score:
– Green: Improves the score.
– Orange: Has minimal effect on the score.
– Red: Negatively affects the score.
Note that adjusting certain settings may cause related switches to change color due to their interrelated effects on performance.
Initial Server Response Time was Short
This feature within the PageSpeed Ninja optimizes server responses by implementing efficient caching mechanisms. By using advanced page cache strategies, it reduces response time to incoming requests (the Time To First Byte metric).
Serve Static Assets with an Efficient Cache Policy
This feature of the PageSpeed Ninja optimizes website performance by implementing an effective caching strategy for static resources. This feature refines the cache policy to improve browser caching for elements such as images, CSS, and JavaScript files. It maximizes caching efficiency by instructing the browser on the optimal duration to retain these assets, reducing server requests and accelerating page load times for returning visitors.
Enable Text Compression
This setting in the PageSpeed Ninja optimizes website performance by using two powerful compression techniques: Gzip and Brotli compression. Gzip compression, a widely supported method, reduces the size of text-based files such as HTML, CSS, and JavaScript by compressing them before transmission, thereby speeding up website load times. Brotli compression, a newer and more efficient algorithm, further reduces file sizes and improves performance for modern browsers that support this advanced compression method.
Preconnect to Required Origins
This feature in the PageSpeed Ninja optimizes website performance by initiating early connections to third-party origins, reducing latency and improving load times. Using DNS prefetching, it proactively resolves domain names for faster connections. By pre-establishing connections to essential domains such as CDNs or external APIs, it reduces handshake time and improves overall page speed.
Preload Key Requests
This setting within the PageSpeed Ninja focuses on optimizing website load times by proactively preloading critical resources. This feature strategically identifies and preloads essential assets, such as fonts, scripts, or CSS files that are required for the initial page rendering process. By fetching these key requests ahead of time, it significantly improves page speed.
Minify CSS
The “Minify CSS” settings within the PageSpeed Ninja offer a robust set of tools designed to boost website performance by minimizing CSS files. These settings use advanced CSS minification techniques by using a CSS minifier to compress and optimize CSS resources. By reducing CSS size, the plugin significantly improves page load times.
Minify JavaScript
The “Minify JavaScript” setting in the PageSpeed Ninja provides powerful tools to optimize website performance by reducing JavaScript file sizes. This feature uses advanced JavaScript minification techniques, employing a JavaScript minifier to compress and condense code, improving load times and overall site speed. By enabling JS compression, Minify JavaScript helps to reduce JavaScript size, optimize script delivery and boost web page efficiency.
Eliminate Render-Blocking Resources
This feature of the PageSpeed Ninja significantly improves page loading speed by focusing on critical aspects of optimization. This feature uses various strategies such as Above-the-fold Critical CSS and Non-blocking JavaScripts to streamline the critical path for fast rendering of essential content. The plugin provides options to inline critical CSS and defer (asynchronously lazy load) non-essential CSS for improved performance. In addition, the plugin manages JavaScript by deferring or asynchronously loading scripts to improve the critical rendering path.
Ensure Text Remains Visible During Webfont Load
This feature within the PageSpeed Ninja prioritizes the visibility of text while web fonts are loading. It uses the “swap” mode for web fonts to ensure that a fallback font is displayed immediately, preventing a flash of invisible text (FOIT). Additionally, it optimizes the loading of Google Fonts, ensuring that content remains visible during the font-loading process. This optimization significantly improves the user experience and page performance.
Avoids Enormous Network Payloads
This setting within the PageSpeed Ninja includes several optimization techniques aimed at reducing excessive data transfer. It includes features such as CSS optimization, minifying HTML, bundling/merging CSS and JavaScript files, async script loading, HTML minification, and optimizing emoji loading. Together, these settings work to reduce file sizes and improve page loading speed by minimizing unnecessary network payloads.
Efficiently Encode Images
This setting within the PageSpeed Ninja provide a comprehensive suite of optimize images tools. This feature allows users to fine-tune the optimization process by adjusting JPEG, WebP, and AVIF qualities to ensure efficient compression. With its range of customizable settings, it allows users to optimize and compress images to varying degrees, serving as a powerful picture optimizer.
Serve Images in Next-Gen Formats
This feature, a core component of the PageSpeed Ninja, is a key tool for optimizing website images. This feature facilitates the conversion of images into modern formats such as WebP, a next-gen image format known for its superior compression and quality attributes. This setting acts as an image converter, seamlessly converting existing image files into the WebP format, thereby improving website loading speed and performance. By leveraging the capabilities of WebP, this image conversion setting ensures optimal image delivery.
Defer Offscreen Images
The “Defer offscreen images” feature within the PageSpeed Ninja offers various optimizations aimed at improving page load times by implementing lazy loading techniques. This feature delays the loading of images, videos, and iframes that are not immediately visible on the user’s screen, using image lazyload methods to prioritize content above the fold. The plugin allows users to choose lazy load with one of two types of Low-Quality Image Placeholders (LQIPs): gradient placeholders and blurred low-quality placeholders. These placeholders are displayed in place of the actual images, providing a smoother initial load while the full-quality images lazy load in the background.
Image Elements Have Explicit Width and Height
This setting in the PageSpeed Ninja focuses on optimizing the rendering of web pages by ensuring that all images have width and height attributes. This optimization strategy aims to prevent layout shifts during page loading by specifying the exact dimensions for each image element and ensures that browsers pre-allocate space for images based on the provided dimensions, eliminating the need for recalculations when images load.
JavaScript Execution Time
This setting in the PageSpeed Ninja provides control over optimizing JavaScript to improve site performance. It enables features like deferring critical JS to prioritize vital scripts for faster loading, optimizing integrations with platforms (like Facebook, Twitter, etc.) to streamline their scripts’ loading mechanisms, and delaying the loading of all asynchronous JavaScripts to prevent potential bottlenecks. Additionally, it allows for the selective delay of loading of specific JavaScripts in Advanced settings.
Avoids an Excessive DOM Size
This setting within the PageSpeed Ninja focuses on optimizing webpage performance by reducing the Document Object Model (DOM) size. Currently, this is accomplished by eliminating embedded plugins such as Flash, ActiveX, Silverlight. In the Pro version it’s possible to hide extra DOM elements and reveal them after user interaction. Ongoing development may introduce further optimization techniques to trim excess DOM elements and improve overall website speed.
Avoid serving legacy JavaScript to modern browsers
This setting allow to detect polyfill JavaScript files and load them in legacy browsers only, thereby reducing network payload.
Has a Meta Viewport Tag with width or initial-scale
This feature within the PageSpeed Ninja optimizes web pages by ensuring that they contain an important meta viewport tag. This tag is crucial for improving mobile responsiveness. Including this tag allows web content to properly scale and adapt to different devices and screen sizes, ultimately optimizing the page for seamless viewing across a range of devices.
Advanced Settings
The Advanced Settings page within the PageSpeed Ninja serves as a central hub for users seeking more control over their website optimization. This section not only allows users to fine-tune settings but also facilitates efficient cache management and provides troubleshooting capabilities. Users can adjust specific parameters to tailor the plugin’s performance optimization precisely to their website’s requirements.
Free License Key
Starting from November 2023, PageSpeed Ninja requires a free license key for connectivity to our servers. This important update results in improved server load balancing to prevent resource exhaustion and ensure uninterrupted performance. You can get your free license key by visiting https://pagespeed.ninja/download/.
PageSpeed Ninja Pro
PageSpeed Ninja Pro is a powerful plugin designed to optimize website performance through a range of advanced features. It drastically reduces load times with its fast advanced page caching and multithreading background optimization, image optimization features that include properly sizing images and AVIF format support. The plugin excels in efficient CLI asset optimization through minification tools such as UglifyJS for JavaScripts, CSSO for stylesheets, JPEGOptim/OptiPNG/GIFsicle for images, and many others. Its DNS Prefetch and Preload Assistants fine-tune site responsiveness. Notably, it allows users to self-host and optimize external resources like Google Analytics and offers robust backup/restore capabilities, culminating in a comprehensive solution for turbocharging website performance.
Get PRO with PageSpeed.Ninja
Uninstallation
When you delete the plugin, it will automatically revert all settings to the original state as they were before this plugin was installed. During this process, the “/s” directory containing optimized files will be removed and changes made to “.htaccess” files will be undone. Please note that uninstalling the plugin will remove all data associated with the plugin, including settings and logs.
Feedback, Bug Reports, and Logging Possible Issues
If you have any questions, suggestions, or encounter issues related to site speed optimization, we encourage you to contact us at [email protected]. Whether you’re a user, developer, or tester, your feedback is essential to improving our services.
To facilitate troubleshooting, PageSpeed Ninja offers error logging capabilities. You can enable this feature in the Advanced tab of the PageSpeed Ninja settings. If you encounter any problems, you can help us in resolving them by providing us with the relevant error log file. Your assistance will help us improve your experience with PageSpeed Ninja.

各版本下載點

（建議使用方法二，確保安裝的版本符合當前運作的 WordPress 環境。

0.9.5 | 0.9.6 | 0.9.7 | 0.9.8 | 0.9.9 | 1.0.0 | 1.0.1 | 1.0.2 | 1.0.3 | 1.0.4 | 1.0.5 | 1.1.0 | 1.1.1 | 1.1.2 | 1.1.3 | 1.1.4 | 1.1.5 | 1.2.0 | 1.2.1 | 1.2.2 | 1.2.3 | 1.3.0 | 1.3.1 | 1.3.2 | 1.3.3 | 1.3.4 | 1.3.5 | 1.3.6 | 1.3.8 | 1.3.9 | 1.4.0 | 1.4.1 | 1.4.2 | 1.4.3 | 1.4.4 | 1.4.5 | trunk | 0.9.10 | 0.9.11 | 0.9.12 | 0.9.13 | 0.9.14 | 0.9.15 | 0.9.16 | 0.9.17 | 0.9.18 | 0.9.19 | 0.9.20 | 0.9.21 | 0.9.22 | 0.9.23 | 0.9.24 | 0.9.25 | 0.9.26 | 0.9.27 | 0.9.28 | 0.9.29 | 0.9.30 | 0.9.31 | 0.9.32 | 0.9.33 | 0.9.34 | 0.9.35 | 0.9.36 | 0.9.37 | 0.9.38 | 0.9.39 | 0.9.40 | 0.9.41 | 0.9.42 | 0.9.43 | 0.9.44 | 0.9.45 | 1.2.ձ | 1.3.10 | 1.3.11 | 1.3.12 | 1.3.13 | 1.0.rc.1 | 1.0.rc.2 | 1.0.rc.3 | 1.0.rc.4 | 1.0.rc.5 | 1.0.rc.6 | 1.0.rc.7 |

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