Questions tagged [performance]

The art of tuning a website to deliver it's content quickly and efficiently to the user over a potentially low bandwidth connection.

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13
votes
2answers
6k views

How to improve extremely slow page load time on a 23MB web page full of SVGs?

I have a webpage that is full of inline-SVG around 140+ inline SVGs! Just the HTML file size is 23MB, plus there is external CSS and JavaScript loading, though that is roughly only around 30KB. The ...
4
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1answer
74 views

For a website behind a CDN, does it make sense to combine JavaScript into one file and host it on my server?

Currently, my website loads JavaScript libraries from several CDN providers (cloudflare, unpckg, etc.) and it is working through a CDN (cloudflare). Does it make sense to combine all third-party ...
3
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1answer
92 views

Why does my site load slower on the first attempt from an incognito browser?

My WordPress website is connected to Cloudflare CDN. It runs quite smoothly as of now. The site speed is quite good in general. However, when I load the website for the first time after like 10-15 ...
4
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1answer
58 views

Could a specific website be blocked or throttled for all users by Verizon

UPDATE: The issue was in fact a Verizon "routing" issue. I reached out to Verizon and was given the go around, so I contacted my host who did some testing. We used Nord VPN to mask the ...
1
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2answers
30 views

Why are my GTmetrix scores different in different locations?

The GTmetrix score of my website when tested in Vancouver differ from the results in Mumbai by a whopping 4 seconds! Different locations are giving me different results. What's happening here and ...
2
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3answers
62 views

Does a good but less than perfect Pagespeed Insights score hurt the chances of a page ranking in Google?

I put my portfolio website through the google speed test and it got a 86. What does this exactly mean? 86 out of 100 strikes me as a good score, what does this mean for the chances of a website with ...
3
votes
1answer
100 views

Should I use DNS prefetch and preconnect when loading resources from CDN?

In my web page I load around 12 resources from jsdelivr (CSS and JS). Should I optimize it with one (or both) of following techniques? If yes, should I put the tags right before loading tags or at the ...
1
vote
1answer
78 views

Should I remove HTTP to HTTPS redirects to fix performance problems reported by Google Pagespeed Insights?

I have created a brand new website in which I publish various computing services I suggest to potential customers. As far as I know, no other website on the World Wide Web links to that website and ...
1
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0answers
26 views

How to minimize CLS (Cumulative Layout Shift) for responsive layouts?

What are some suggestions for reducing content layout shift for responsive layouts? From researching https://web.dev/cls: "Always include size attributes on your images and video elements, or ...
2
votes
1answer
42 views

Core Web Vitals (CLS and LCP) errors for a client-rendered Single Page Application (built with React + Firebase)

I have a SPA (single page website) build with React + Firebase and I've been getting these Core Web Vitals errors (see images below). My website is loading normally both on Desktop and Mobile. And I ...
0
votes
1answer
29 views

Will removing a HTML section block from my all website pages, affects SEO and my website rank?

So I have a hidden HTML section block that is heavy and requires multiple HTTP requests, which slowing my website page speed load. So I am trying to implement a lazyloading methodology for this ...
1
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1answer
24 views

Could a slow website cause visitors from a Facebook ads campaign to bounce?

I have a website with traffic problems. The web site sells a product in Spanish. I recently created a Facebook ads campaign, and it got 96 visits. But Google Analytics only registered 9 visits. I ...
1
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1answer
51 views

How to determine if APCu is overall lighter than Memcached in a usecase?

I would say that my personal website is at least currently a "small" website. It is a MediaWiki-based all-core website without images at all and of about 750 webpages of generally no more ...
3
votes
2answers
292 views

Does content below the fold affect CLS (cumulative layout shift) score?

From what I've read on CLS it's worked out with the following formula (essentially stuff in the viewport): area of impact region / area of viewport = impact fraction max move distance / viewport ...
1
vote
1answer
29 views

Prerendering vs. loadtime optimization

While loadtime optimization we turn many adjusting screws, which all have different efficiency and need different afforts. Is it not better to prerender all, or most important, pages and to guarantee, ...
4
votes
1answer
172 views

Use A.jpg if you have it in cache, otherwise use B.jpg?

Let's say I have one page big.html that uses <img alt="big image" src="big.jpg" width="300" height="300" /> where big.jpg is indeed an image of 300 by ...
1
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1answer
68 views

Website seems idle before loading content [closed]

When we navigate to our Wordpress website, it can sometimes remain idle for 3 to 10 seconds before appearing to load content. This can happen at random times. We have observed it happening on multiple ...
0
votes
1answer
20 views

web hosting metrics

I've started a new role overseeing an ad hoc web hosting division. My boss has asked me to find some metrics he can use to ensure I'm on track ensuring the hosting services are run okay. Can you ...
1
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2answers
167 views

Site speed using web fonts - Self-hosted vs Google Fonts etc

Whilst looking for the right solution for me, I have been looking at the question here Using fonts on websites: Webfonts vs downloaded fonts, and one of the answerers states: The information given to ...
2
votes
1answer
81 views

Can I rely on Google Lighthouse reports (especially for mobile sites)?

We have started to use Lighthouse to track the improvements we make to our sites. While this seems to work quite well for desktop sites, i.e. we see the values improve over time and as we make changes,...
1
vote
1answer
160 views

Adsense TOS regarding preconnecting origins

Is it against adsense TOS if I preconnect origins like pagead2.googlesyndication.com, googleads.g.doubleclick.net, tpc.googlesyndication.com and others that are commonly used by adsense? The ...
2
votes
3answers
54 views

Would it introduce lag and bad user experience to host a website with two hosting companies?

I'm developing a website for a customer that has two companies, but the two are closely related. The customer wants two separate sites that look and function as one site as far as users are concerned. ...
2
votes
1answer
46 views

PageSpeed is A, 91% but Fully Load Time is 4.8 Seconds

As my title suggests there is, to me, a discrepancy with the A Rating I received. My site using GMetrix ranks very high but the "Page Load" seems very slow. Why isn't that bringing down my ...
2
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0answers
30 views

Time to FCP changes based on order of <h2> and <p> tags

I was troubleshooting why one particular page took a full second longer to reach FCP compared to similar pages for mobile according to Google's Page Insights. The difference ended up being the order ...
2
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0answers
183 views

How to measure processes in Total Blocking Time in Google PageSpeed?

I am trying to measure specific TBT as outlined in Google's documentation The Total Blocking Time (TBT) metric measures the total amount of time between First Contentful Paint (FCP) and Time to ...
1
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0answers
342 views

Largest contentful paint (LCP)>2.5

Google (GSC) has flagged almost half of my content as taking longer than 2.5 seconds to LCP on mobile. I've spent several days trying to optimize my site to reduce the time it takes, but I can't get ...
1
vote
1answer
27 views

What is 'Research Online' as displayed in Chrome Dev Tools Lighthouse?

When I run a Lighthouse performance audit on our site, one of the 'Opportunities' it flags is to 'Reduce the impact of third-party code'. It lists all the third-party code used by our site, however ...
1
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2answers
157 views

Why adding facebook pixel code reduces the score on gtmetrix?

My score website on gtmetrix is A. When I add facebook pixel code, the scrore is B Look at this : How can I solve this problem? I want to add the Facebook pixel code on my website, but I don't want ...
2
votes
2answers
40 views

Why does Google, in it's Page Insights tool, advise to use WebP images which don't work in all browsers?

I recently swapped all of the images on my web with WebP compressed images and the Page Insights score got as high as 97. However, I found out my page doesn't work on IE, Safari and Firefox (all other ...
0
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1answer
29 views

Speeding up loading time of large html file [closed]

I am hosting a static web page, which you can visit at nswcorona.imfast.io. It is a very large index.html file with many elements (displaying geo-data), and takes about 10-15 seconds to load. I am new ...
1
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1answer
39 views

Performance: 10.000 files in one folder vs. 10.000 files in several folders

On my webspace I have a single folder with 10.0000 images. Is there any difference in performance if I organize them in subfolders? So instead of one folder /images I will have 1.000 folders /images/...
1
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0answers
40 views

How can I enable compression of 3rd party scripts to get a better Gtmetrix score?

If I test my website on the Gtmetrix, there appear like this :
1
vote
1answer
36 views

Not Hiding but REMOVING content for mobile

I understand using media queries and display:none to hide content for mobile. The problem is that the content still downloads. I found this older post that has a similar issue, but hoping for more ...
1
vote
1answer
300 views

How to use Lighthouse scoring Guide for Accessibility Audit?

I am working on scoring improvement on Accessibility Audit in Lighthouse. My client's site has an accessibility score of 60 and they aim to get it 90+. I performed the Audit using Google Lighthouse ...
1
vote
2answers
82 views

What is "ineedthispage"? Where is it coming from? It is killing the server

I am seeing the following in my "access_log": ip.address.output.here - - [12/Dec/2019:15:17:07 +0000] "GET /pathto/article/15104133/?ineedthispage=yes&ineedthispage=yes&ineedthispage=yes&...
6
votes
3answers
78 views

How can I determine if my site speed is affecting my conversions?

I need to convince my team that our load times are way too high. Load times for the /cart is around 10 seconds and load times for individual pages are around 6 seconds. I've seen all the studies about ...
1
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0answers
16 views

Start Time of Page Load in Page Timings in Google Analytics

What's the start event for the 'Page Load Time' in the 'Page Timings' report? I've read that GA uses NavigationTiming API. Is it v1? Is the start event performance.timing.navigationStart? Also, what'...
2
votes
2answers
169 views

Do VPSs guarantee resources (CPU, memory) ? Or are they like a shared host (in terms of resources) but you can also manage your own site?

Shared hosts usually don't guarantee resources, they just say unlimited bandwith and things like that and the performance is best effort. Is it different with a VPS? For example, it says 1 vCores, ...
1
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0answers
36 views

Does "Last Painted Hero" time have an impact on SEO and search engine rankings?

Does "Last Painted Hero" (LPH) time have an impact on SEO and search engine rankings? For instance, a 3rd party vendor decreased our LPH time from 16.200s to 1.200s. We're running a separate SEO ...
1
vote
1answer
36 views

Using the clicks/impressions list from Google Search Console

Google Search Console → Performance → Queries shows these in the clicks/impressions list for my site: non A Cs 2,066 7,181 non-A Cs 679 2,410 non-A C ...
1
vote
1answer
312 views

How can I optimize Google Analytics for GTmetrix?

I'm optimizing my website using GTmetrix and I've got good grades, but it's still not perfect. Look at this image for PageSpeed: And this one for YSlow: The picture shows that my value is not ...
2
votes
2answers
2k views

Can it save the google tag manager script in an external js file?

My default index html like this : <html> <head> <meta name="google-site-verification" content="****************" /> <script async src="https://www.googletagmanager.com/...
1
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0answers
42 views

How can I improve performance score website in the gtmetrix? [closed]

I test my web with gtmetrix. The result like this : I want to improve grade of add expires headers, compress component with gzip and all recommendation which has a bad grade How can I do it? ...
3
votes
3answers
13k views

How do I add the an expires header for external URL components as suggested by GTmetrix and YSlow?

I am trying to decrease the loading time of my website which is hosted in Bluehost. So when I check the performance scores via GTmetrix under YSlow section it mention to "Add expire headers" for four ...
0
votes
2answers
252 views

Does domain registrar performance matter?

Can performance matter between multiple domain registrars? What should one measure to determine which registrar is more performant? The shared hosting will be at a separate provider so I will use the ...
1
vote
1answer
236 views

Is storing common static pages in a database bad practice?

I am wondering whether it is bad practice to store commonly used standard static webpages such as the home page, 'contact us' page, login page, etc. in a database instead of as static files saved on ...
1
vote
1answer
102 views

What do the browser performance acronyms "HRBR" "TTFCP" & "RTT" mean?

They're used in this article on resource hints: https://medium.com/reloading/a-link-rel-preload-analysis-from-the-chrome-data-saver-team-5edf54b08715 I can't find then used anywhere else though, nor ...
1
vote
1answer
40 views

How am I supposed to add support for "next-gen" formatted images?

No matter how much unnecessary css/js or general load time I shave off my website, Google Audits always penalises me massively for not using "next-gen formats" such as JPEG2000, JPEGXR and WebP in my ...
4
votes
1answer
140 views

Does having a lot of 301 redirects noticably impact performance?

I just moved my website to Wordpress from another service. Unfortunately, this means that although I was able to import all of my previous content to Wordpress, the post permalinks are now entirely ...
0
votes
1answer
100 views

MediaWiki: Enable text compression

From a Google Pagespeed Insights test it seems my MediaWiki website lacks text-compression; reading about this, it seems I lack this because I don't have Gzip compression on. I Ran this gzip test and ...

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