Run the Lighthouse Performance Audit ( Lighthouse > Options > Performance) and look for the results of the Serve images in next-gen formats audit. Lighthouse can be used to verify that all images on your site are being served using WebP. This will allow you to use image markup similar to the following with automatic WebP support: Verify WebP usage # If a WebP alternate is found, it will be served with the proper Content-Type header. The rewrite rule above will look for a WebP version of any requested JPEG or PNG image.
If you go this route, you'll need to set the HTTP Vary response header to ensure caches will understand that the image may be served with varying content types:
Use cwebp #Ĭonvert a single file, using cwebp's default compression settings: cwebp images/flower.jpg -o images/flower.webpĬonvert a single file, using a quality level of 50: cwebp -q 50 images/flower.jpg -o images/flower.webpĬonvert all files in a directory: for file in images/* do cwebp " $file" -o " $/ $1.webp -f It's worth playing around with this, find which level is the right tradeoff between image quality and filesize for your needs. You can specify a quality level from 0 (worst) to 100 (best). When you convert images to WebP, you have the option to set a wide variety of compression settings-but for most people the only thing you'll ever need to care about is the quality setting.
#Webp converter npm install#
npm install webp-converter-webpack-plugin.
#Webp converter npm software#
Version Management Software Licenses Vulnerabilities. Webpack or Gulp), whereas the CLI is a good choice for simple projects or if you'll only need to convert images once. Learn more about webp-converter-webpack-plugin: package health score, popularity, security, maintenance, versions and more. The Imagemin WebP plugin is generally the best choice if your project uses build scripts or build tools (e.g. People generally use one of the following approaches for converting their images to WebP: the cwebp command-line tool or the Imagemin WebP plugin (npm package). Lossy compression reduces file size, but at the expense of possibly reducing image quality. In addition, WebP offers both lossless and lossy compression.
WebP is an excellent replacement for JPEG, PNG, and GIF images. Facebook experienced a 25-35% filesize savings for JPEGs and an 80% filesize savings for PNGs when they switched to using WebP.YouTube found that switching to WebP thumbnails resulted in 10% faster page loads.This decreases page sizes and improves performance. WebP images are smaller than their JPEG and PNG counterparts-usually on the magnitude of a 25–35% reduction in filesize. Verify WebP usage Why should you care? #.Were I to save these particular images then convert them (there are some npm modules that convert image 'files') my server would be filled up with images as these images are suppose to be temporary and on-the-fly for each user, each user gets new about 100 new images when ever they move the page. I say string because of the nature of my application. In node.js I need a way to convert a string from base64 png to base64 webp. If webp is not supported then I would fallback to png and the user will have a slower experience. Webp would be ideal size to transport via websockets quickly. What I think I need would be a wrapper around this canvas to do wrapper(canvas).toDataURL('image/webp') Īs I have found out on many attempts that converting a base64 png image into webp from png is just poor speed wise. Which does not support webp but, it does simulate the canvas element Var jpg = canvas.toDataURL("image/jpeg") Ĭonsole.log(webp.length, webp) // 263 byteĬonsole.log(png.length, png) // 1918 byteĬonsole.log(jpg.length, jpg) // 1938 byteĭ(new Image).src = webp ĭ(new Image).src = png ĭ(new Image).src = jpg Var webp = canvas.toDataURL("image/webp") // Chrome only?
#Webp converter npm code#
If you look at this code webp out-performs png and jpg by alot
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