Is Chrome Lighthouse Broken for Mobile Testing? - performance

Here are Chrome Lighthouse scores for three top sites: Uber, AirBnB, and Pizza Hut. Testing is conducted with Mobile selected:
The scores don't seem to match up with the actual mobile page load speed - and seem impossibly low for top high-traffic sites like these.
UBER
AirBnB
PIZZA HUT
Is Chrome Lighthouse broken for mobile testing?

This is working as expected. Lighthouse, by default and with the settings you showed, throttles the network speed and CPU (simulated). See https://github.com/GoogleChrome/lighthouse/blob/master/docs/throttling.md

Related

How to apply pagespeed insights results

Well, I trying establish a web page with a wordpress and GoDaddy hosting. I want to make fast web page, because people says fast web pages appear on first line at Google (as specially mobile web page speed is very important people says). So want to make very fast web page but my level of knowledge is not very advanced, I progress by learning.
If I test my web page with Insights, mine mobile score is about 60-70. If I read reports of Insights there are lots of improvements links appear at blow. I want to learn how to fix that. If you help me make an example, I will do the others myself.
If we start at first problem which is /css?family=…(fonts.googleapis.com) this problem seen below of "Eliminate resources that prevent rendering" topic. So how to fix it. What should I do?
Also at the "covorage" tab there are some source codes are seen and it is not using. For example I am not using easy-sheare plugin (secong row at the image) at homepage.
How to remove safely that codes from home page. If I can learn how one is made, I can correct the others myself.
The issue you are running into is something I have seen over and over again. GoDaddy and Wordpress sites generally are bloated and perform poorly.
Here are some tips to improve your speed & get a better PS ranking.
Hosting: Do you need to be on Godaddy? I have seen this time and time again. Most websites on GD are SLOW. GD is good for domain registration, not for hosting. Most non-tech folks do not know any better. Try using Amazon Lightsail, AWS-S3, Google Firebase, or Netlify. They all offer much faster page loads by reducing initial server response time. And they are surprisingly simple to learn and deploy.
CDN: You must use a content-distribution-network (CDN). Check out Cloudfront. They offer a free tier that works quite well.
Wordpress: This is your real issue. Wordpress is neither easy to build nor easy to maintain. You need multiple plugins to make the site perform. Best you build your own. If you have to be on Wordpress checkout image optimizers, minifiers, and cache plugins. Gumlet, WP Rocket, Shortpixel are quite popular to improve speed.

How to disable google web light for the website

When i am opening my website in slow internet connection then google provide google web light feature then website loading faster. But website is not properly aligned. And load ugly website. I want to disable google web light for the website.
I am using for "no-transform" the disable :
<meta http-equiv="Cache-control" content="no-transform" />
I don't know this right approach or not? And how to check it google web light disabled or not. Because google automatically detect some time load normal user interface and some time load ugly(WITH GOOGLE WEB LIGHT) user interface.
Give me some idea for this..thanks.
I am tested website with in https://www.google.com/webmasters/tools/transcoder?pli=1#url=http%3A%2F%2Fwww.winni.in%2Fbangalore
I have seen one link Can I disable Google Web Light for my website? And also putted <meta http-equiv="Cache-control" content="no-transform"> in header but it is not working.
Google weblight won't be appears on the light and fast website. So, the main key to disable permanently google weblight service is just make your website lighter and faster to load. There are many tricks to make your web lighter and faster than before. First, you can compress your web using gzip compress facility, avoid to use graphic, flash, or other media that can make your web slow to load, use CDN facility, and many other tricks you can try to speed up your website. You can prove it on my official web. Google weblight will never be appears on my official web after do all my tricks. Here I can give you full refference about how to do this.
How to Disable Permanently Google Weblight Service from Your Website
May it's useful.

Navigation Timing API showing Internet explorer (9+) loading pages faster than Chrome

I am using the Navigation Timing API to get real user performance data for visitors to my company's site. I am looking at visitors who use Chrome, Firefox, and IE 9+ and focusing on two main matrices of measurement:
Page Load => (loadEventEnd - navigationStart) and
Interactive => (domInteractive - navigationStart)
I have gathered a lot of data and have noticed something unexpected, IE9+ has lower page load and interactive times than chrome and firefox. Has anyone else experienced this? Does IE set the navigation timing events differently than Chrome and/or Firefox? From all the performance sites I have looked at Chrome and Firefox should be much faster at loading pages than IE. I have looked over my code and tested dozens of time to ensure I am capturing data from the API correctly and appropriately storing it in my DB. Any thoughts?

HTML5 AppCache - Request more space in Firefox

Is it possible to ask a Firefox (version 15) user for more space (> 5MB) for the AppCache?
We're planning to develop a WebApp for a customer with users who are only using Firefox 15 (or IE8) and the whole product database (800 products with some attributes and images) and a order list generator should be able to work offline.
Any help or other solutions based on Firefox 15 or IE8 would be appreciated.
browser.cache.offline.capacity seems to be the pref you want. By default it's 500M, which really ought to be plenty!
Go to about:config and type 'offline' in the search box to get to the pref.
http://www.tweakguides.com/Firefox_10.html
Lots more information in mozillazine, but it's down at the moment; use google's cache:
http://webcache.googleusercontent.com/search?q=cache:Y607-mxIMCEJ:kb.mozillazine.org/Browser.cache.offline.capacity+&cd=1&hl=en&ct=clnk&gl=us&client=firefox-beta

How can I performance tuning my situation. Sinatra and images

Here's my situation, I'm doing some basic Sinatra application hosted on heroku. The app is requesting the 25 top most popular videos on youtube by youtube RESTful api, but it only shows thumbnail images on the app not the videos (user has to click it to see the video). Also, the app is requesting my 10 most recent photos from my flickr account by flickraw gem, also show that on the app. When I run google chrome pagespeed to test the performance, I get 56/100. It suggests me that I should serve scaled images rather than reduce it by css or html (I got the smallest images I could get but I somehow need to reduce them down a bit to fit my page), which obviously I cannot do that, those files are on youtube and flickr.
Should I scale them down on the fly and cache that on Amazon S3? or what would be the best strategies to boost my pagespeed?
Right now it takes about 8 seconds to load the entire page.
The most important factor is how often do you request YouTube and Flickr. You should make the request at a given time interval and cache the result / store it in memory.

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