wordpress插件之Asset CleanUp: Page Speed Booster

Asset CleanUp: Page Speed Booster的作者是Gabriel Livan,目前有70,000+个有效安装。已经Tested with 5.4.1版本的wordpress。
Description
Don’t just minify & combine CSS/JavaScript files ending up with large, bloated and slow loading pages: Strip the “fat” first and get a faster website
Faster page load = Happier Visitors = More Conversions = More Revenue
There are often times when you are using a theme and a number of plugins which are enabled and run on the same page. However, you don’t need to use all of them and to improve the speed of your website and make the HTML source code cleaner (convenient for debugging purposes), it’s better to prevent those styles and scripts from loading.
For instance, you might use a plugin that generates contact forms and it loads its assets (.CSS and .JS files) in every page of your website instead of doing it only in the /contact page (if that’s the only place where you need it).
“Asset CleanUp” scans your page and detects all the assets that are loaded. All you have to do when editing a page/post is just to select the CSS/JS that are not necessary to load, this way reducing the bloat.
The plugin works best in combination with a cache plugin such as WP Rocket.
Main plugin’s benefits include

Decreases the number of HTTP requests loaded and eliminate render-blocking resources (important for faster page load) by unloading useless CSS/JS
Preload CSS/JS, Local Fonts & Google Fonts files to instruct the browser to download the chosen assets as soon as possible
Minify CSS files (including inline code within STYLE tags)
Minify JavaScript files (including inline code within SCRIPT tags)
Combine remaining loaded CSS & JavaScript files
Inline CSS Files (automatically & by specifying the path to the stylesheets)
Defer combined JavaScript files by applying “defer” attribute to the SCRIPT tags
Site-wide removal for Emojis, Dashicons for guest users and Comment Reply if they are not used
Reduces the HTML code of the actual page (that’s even better if GZIP compression is enabled)
Makes source code easier to scan in case you’re a developer and want to search for something
Remove possible conflicts between plugins/theme (e.g. 2 JavaScript files that are loading from different plugins and they interfere one with another)
Better performance score if you test your URL on websites such as GTmetrix, PageSpeed Insights, Pingdom Website Speed Test
Google will love your website more as it would be faster and fast page load is nowadays a factor in search ranking
Your server access log files (e.g the Apache ones) will be easier to scan and would take less space on your server

Google Fonts Optimization / Removal

Combine all Google Font requests into fewer (usually one) requests, saving one round trip to the server for each additional font requested
Choose between three methods of delivery: Render-blocking, Asynchronous via Web Font Loader (webfont.js) or Asynchronous by preloading the CSS stylesheet
Option to preload Google Font Files from fonts.gstatic.com (e.g. ending in .woff2)
Apply “font-display” CSS property to all loaded Google Font requests
Enable preconnect resource hint for fonts.gstatic.com in case you use Google Fonts; don’t let the browser wait until it fetches the CSS for loading the font files before it begins DNS/TCP/TLS
Remove all Google Font requests including link/font preloads, @import/@font-face from CSS files & STYLE tags, resource hints

Local Fonts Optimization

Preload local font files (ending in .woff, .woff2, .ttf, etc.)
Apply “font-display” CSS property value to LINK / STYLE tags (Pro version)

Remove useless links, meta tags and HTML comments within the HEAD and BODY (footer) tags of the website

Really Simple Discovery (RSD) link tag
Windows Live Writer link tag
REST API link tag
Pages/Posts Shortlink tag
Post’s Relational Links tag
WordPress version meta tag (also good for security reasons)
All “generator” meta tags (also good for security reasons)
RSS Feed Link Tags (usually they are not needed if your website is not used for blogging purposes)
oEmbeds, if you do not need to embed videos (e.g. YouTube), tweets and audios
Valid HTML Comments (exceptions from stripping can be added and Internet Explorer conditional comments are preserved)

Each option can be turned on/off depending on your needs. Instructions about each of them are given in the plugin’s settings page.
Disable partially or completely XML-RPC protocol
This is an API service used by WordPress for 3rd party applications, such as mobile apps, communication between blogs and plugins such as Jetpack. If you use or are planning to use a remote system to post content to your website, you can keep this feature enabled (which it is by default). Many users do not use this function at all and if you’re one of them, you can disable it.
Plugin works with WordPress Multisite Network enabled!

Asset CleanUp Pro
This plugin is the lite version of Asset CleanUp Pro that comes with more benefits including managing assets (CSS & JS files) on all WordPress pages, unloading plugins site-wide or via Regex(es), apply “async” and “defer” attributes on loaded JavaScript files which would boost the speed score even higher, move the loading location of CSS/JS files (from HEAD to BODY to reduce render-blocking or vice-versa if you need specific files to trigger earlier) and premium support. Click here to purchase Asset CleanUp Pro!

NOTES
People that have tested the plugin are so far happy with it and I want to keep a good reputation for it. In case something is not working for you or have any suggestions, please write to me on the forum and I will be happy to assist you. BEFORE rating this plugin, please check the following post http://chrislema.com/theres-wrong-way-give-plugin-feedback-wordpress-org/ and then use your common sense when writing the feedback
GO PRO

Unload CSS/JS files on all WordPress pages including Categories, Tags, Custom Taxonomy (e.g. WooCommerce product category), 404 Not Found, Date & Author Archives, Search Results)
Unload targeted plugins site-wide or via Regex(es), thus resulting in not only their CSS/JS stripped, but also their backend PHP code, HTML output printed via wp_head() or wp_footer() action hooks, cookies that are set, etc.)
Defer CSS by appending it to the BODY to load it asynchronously (Render blocking CSS delays a web page from being visible in a timely manner)
Move JavaScript files from HEAD to BODY and vice-versa (CSS files moved to the BODY are automatically deferred)
Defer JavaScript loaded files (by applying “defer” attribute to any enqueued JS file)
Async JavaScript loaded files (by applying “async” attribute to any enqueued JS file)
Inline JavaScript files (automatically & by specifying the path to the stylesheets)
Apply “font-display:” CSS property to @font-face from existing local files to improve the PageSpeed score for “Ensure text remains visible during webfont load”
Get File Size of the Loaded CSS/JS
Premium support and updates within the Dashboard

Give Asset CleanUp a try! If you want to unlock all features, you can Upgrade to the Pro version.

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