| Optimization Filters |
Description |
| Add Head |
Adds a "head" element to the document if not already present. |
| Canonicalize Javascript Libraries |
Redirects JavaScript libraries to a JavaScript hosting service. |
| Collapse Whitespace |
Removes excess whitespace in HTML files (avoiding tags "pre", "script", "style" and "textarea"). |
| Combine Css |
Combines multiple CSS elements into one. |
| Combine Javascript |
Combines multiple script elements into one. |
| Convert Gif To Png |
Optimizes gifs to pngs. |
| Convert Jpeg To Progressive |
Converts larger jpegs to progressive format. |
| Convert Jpeg To Webp |
Producess lossy webp rather than jpeg images for browsers that support webp. |
| Convert Meta Tags |
Adds a response header for each meta tag with an http-equiv attribute. |
| Convert Png To Jpeg |
Converts gif and png images into jpegs if they appear to be less sensitive to compression artifacts and lack alpha transparency. |
| Convert To Webp Lossless |
Replaces png and non-animated gif images with webp images on browsers that support the format. |
| Dedup Inlined Images |
Replaces repeated inlined images with JavaScript that loads the image from the first occurence of the image. |
| Extend Cache |
Extends cache lifetime of CSS, JS, and image resources that have not otherwise been optimized, by signing URLs with a content hash. |
| Extend Cache Css |
Extends cache lifetime of otherwise unoptimized CSS resources by signing URLs with a content hash. |
| Extend Cache Images |
Extends cache lifetime of otherwise unoptimized images by signing URLs with a content hash. |
| Extend Cache Scripts |
Extends cache lifetime of otherwise unoptimized scripts by signing URLs with a content hash. |
| Fallback Rewrite Css Urls |
Rewrites resources referenced in any CSS file that cannot otherwise be parsed and minified. |
| Flatten Css Imports |
Inline CSS by flattening all @import rules. |
| Inline Css |
Inlines small CSS files into the HTML document. |
| Inline Google Font Css |
Inlines small CSS files used by fonts.googleapis.com into the HTML document. |
| Inline Images |
Replaces small images by data: urls. |
| Inline Import To Link |
Inlines "style" tags comprising only CSS @imports by converting them to equivalent "link" tags. |
| Inline Javascript |
Inlines small JS files into the HTML document. |
| Inline Preview Images |
Uses inlined low-quality images as placeholders which will be replaced with original images once the web page is loaded. |
| Insert Dns Prefetch |
Inserts link rel="dns-prefetch" href="//www.example.com" tags to reduce DNS resolution time. |
| Jpeg Sampling |
Reduces the color sampling of jpeg images to 4:2:0. |
| Lazyload Images |
Loads images when they become visible in the client viewport. |
| Make Google Analytics Async |
Convert synchronous use of Google Analytics API to asynchronous |
| Make Show Ads Async |
Convert synchronous use of Google AdSense API to asynchronous |
| Recompress Images |
Recompresses images, removing excess metadata and transforming gifs into pngs. |
| Recompress Jpeg |
Recompresses jpegs, removing excess metadata. |
| Recompress Png |
Recompresses pngs, removing excess metadata. |
| Recompress Webp |
Recompresses webps, removing excess metadata. |
| Remove Comments |
Removes comments in HTML files (but not in inline JavaScript or CSS). |
| Remove Quotes |
Removes quotes around HTML attributes that are not lexically required. |
| Resize Images |
Resizes images when the corresponding "img" tag specifies a smaller width and height. |
| Resize Mobile Images |
Works just like Inline Preview Images, but uses smaller placeholder images and only serves them to mobile browsers. |
| Resize Rendered Image Dimensions |
Resizes an image when the rendered dimensions of the image are smaller than the actual image. |
| Rewrite Css |
Rewrites CSS files to remove excess whitespace and comments, and, if enabled, rewrite or cache-extend images referenced in CSS files. |
| Rewrite Images |
Optimizes images, re-encoding them, removing excess pixels, and inlining small images. |
| Rewrite Javascript |
Rewrites JavaScript files to remove excess whitespace and comments. |
| Rewrite Javascript External |
Rewrites JavaScript external files to remove excess whitespace and comments. |
| Rewrite Javascript Inline |
Rewrites inline JavaScript blocks to remove excess whitespace and comments. |
| Rewrite Style Attributes With Url |
Rewrite the CSS in style attributes if it contains the text "url(" by applying the configured Rewrite Css filter to it |
| Strip Image Color Profile |
Strips color profile info from images. |
| Strip Image Meta Data |
Strips EXIF meta data from images. |
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