Technology Performance Pulse

Session Replay improved for continuously deployed apps: CSS file capture

Dynatrace

MAY 12, 2021

Their internal application is deployed with all CSS resources protected by password so the team in charge of doing the analysis couldn’t access the monitored application. To enable user experience monitoring for the application, DevOps would have to configure the server to make the CSS resources available without authentication.

Monitoring

Monitoring DevOps Innovation Availability

Measure What You Impact, Not What You Influence

CSS Wizardry

AUGUST 24, 2022

We might hypothesise that reducing the amount of render-blocking CSS should help improve LCP—and that’s a sensible hypothesis!—but Trying to proxy the impact of reducing our CSS from our LCP time leaves us open to a lot of variance and nondeterminism. For example, continuing our task to reduce CSS size: performance. duration ).

Benchmarking

Benchmarking Metrics Cache Network

Getting Your `head` Straight: A New CSS Performance Diagnostics Snippet

Smashing Magazine

SEPTEMBER 22, 2021

Getting Your `head` Straight: A New CSS Performance Diagnostics Snippet. Getting Your `head` Straight: A New CSS Performance Diagnostics Snippet. There are plenty of ways to detect performance bottlenecks and audit CSS. In his session, Get Your Head Straight , Harry explains what exactly makes good or bad <head> tags.

Performance

Performance Website Engineering Design

Speeding Up Async Snippets

CSS Wizardry

OCTOBER 12, 2022

There’s no async attribute in sight, and the code itself isn’t doing anything special: it’s just injecting a script that resolves to a regular, blocking tag in the DOM: How is this any different to just loading the file normally? But what is it about this snippet that actually makes the file asynchronous? Where is the magic?!

Speed

Speed Government Performance Code

Gain broader applicability for Session Replay through easier, automated and GDPR-compliant masking presets

Dynatrace

NOVEMBER 16, 2020

We designed our masking mechanism to ensure that CSS rules for masking are evaluated in the client browser—in this way, no sensitive or confidential information ever leaves the client browser. However, sometimes it can be cumbersome to define the proper CSS rules for masking.

Ecommerce

Ecommerce Monitoring Website Tuning

ct.css — Performance Hints via Injected Stylesheet Alone

CSS - Tricks

OCTOBER 5, 2021

This is some bonafide CSS trickery from Harry that gives you some generic performance advice based on what it sees in your <head> element. From there, Harry gets very clever with selectors, determining problematic situations from the usage and placement of certain tags. A CSS selector! It’s a nice little trick.

Performance

Performance Media Software Software

Don’t Sink Your Website With Third Parties

Smashing Magazine

JUNE 1, 2022

Any resource (HTML, CSS, JavaScript, image, font, etc.) In a multivariate test, you serve a version of the page with the third-party tag on it to one segment of your visitor population, and the other segment gets a version of the page without the third-party tag. Are you using one (or more than one) tag manager?

Website

Website Design Network Best Practices

Optimizing The Image Element LCP

Smashing Magazine

JANUARY 16, 2023

I’ll cover the following: How to improve the LCP Resource load time subpart with the help of the <img> tag and a focus on proper LCP image sizing. Some explanations on the browsers’ behavior for this <img> tag and its attributes, so you can really understand and integrate your LCP image correctly.

Media

Media Mobile Website Metrics

CSS and Network Performance

CSS Wizardry

NOVEMBER 9, 2018

Despite having been called CSS Wizardry for over a decade now, there hasn’t been a great deal of CSS-related content on this site for a while. Let me address that by combining my two favourite topics: CSS and performance. Employ Critical CSS. What’s the Big Problem? Split Your Media Types.

Network

Network Performance Media Cache

Getting to Know a Legacy Codebase

CSS Wizardry

JULY 21, 2018

The other day, Brad dropped me a message asking me about the topic of getting to know a brand new (specifically CSS) codebase. Chrome’s Coverage tool is a great way to see at a very high-level glance what CSS is being used by the current page. This should give you a list of all the stylesheets changed in the last year.

Programming

Programming C++ Database Code

Modern Methods For Improving Drupal’s Largest Contentful Paint Core Web Vital

Smashing Magazine

AUGUST 15, 2023

The image in this hero component is loaded by CSS via the background-image property. Download and parse the CSS. Reconcile the CSS ruleset with the DOM. Instead, we’re going to load the image as a standard HTML <img> tag in the markup. This requires us to use absolute positioning in CSS. Download the image.

Media

Media Metrics Mobile Best Practices

The Fight For The Main Thread

Smashing Magazine

OCTOBER 24, 2023

All of that is dumped on any given page in one fell swoop courtesy of Google Tag Manager (GTM), which allows us to deploy and run scripts without having to go through the pain of re-deploying the entire site. Same deal with CSS. Even the choice to use a particular CSS framework influences performance. The HTML is parsed.

Google

Google Analytics Traffic Metrics

Digital Business Analytics: Let’s get started!

Dynatrace

FEBRUARY 25, 2020

Digital Business Analytics leverages this filtering paradigm by allowing you to add existing tags or properties from your application’s payload to the metadata that Dynatrace associates with each user action or session. At this point, you can use the new properties as filters, just like other automatically created properties and tags.

Analytics

Analytics Metrics Best Practices Servers

Global vs. Local Styling In Next.js

Smashing Magazine

JULY 27, 2021

is opinionated about how to organize JavaScript code, but it doesn’t have built-in opinions about how to organize CSS. and exercise best CSS practices. experience, although it would be good to have a basic understanding of React and to be open to learning some new CSS techniques. Writing “Old-Fashioned” CSS.

Website

Website Design Best Practices Code

A Guide To Image Optimization On Jamstack Sites

Smashing Magazine

NOVEMBER 17, 2022

percent of pages contain at least one <img> tag, and 99.9 According to the analysis carried out in the performance section of Web Almanac , the img tag represents 42% of the LCP elements of websites, while 71-79% of the pages have an image as an LCP element, because they can also be applied as background using CSS.

Media

Media Cache Website Mobile

Jetpack Boost Handles Critical CSS For You

CSS - Tricks

JUNE 1, 2021

Critical CSS is one of those things I see in my performance reports but always seem to ignore. It means to put only the CSS required to render things immediately visible in a <style> tag in the <head> so it comes across in the first network request, then load the rest asynchronously , which will help the page load faster.

Google

Google Network Processing Performance

Site-Speed Topography

CSS Wizardry

NOVEMBER 3, 2020

Given that render blocking resources reside in the head of the document, this implies differing head tags on that page. Or, perhaps a more extreme scenario is that it has entirely different head tags? Note that the PDP’s FP is almost a second slower than other pages? I think the PDP has something different about it. Final Word.

Speed

Speed Ecommerce Metrics Analytics

Smart CSS Solutions For Common UI Challenges

Smashing Magazine

OCTOBER 14, 2021

Smart CSS Solutions For Common UI Challenges. Smart CSS Solutions For Common UI Challenges. It’s incredible to see what we can do with CSS today, especially if you still remember how difficult it once was to figure out stacking contexts or why margins collapsed and why top: float didn’t work. CSS Auditing Tools.

Games

Games Design Strategy Code

DYOC: Agentless RUM, OpenKit, Metric ingest, and Business Analytics

Dynatrace

DECEMBER 18, 2020

There are no hosts, no backend, no database – just HTML, CSS, and JavaScript. just JavaScript and CSS. Agentless RUM allows you to monitor your front-end apps by simply pasting a JavaScript tag into your code. It’s structured as a single page app (SPA) and hosted on GitHub Pages. Dashboard Powerups. Again, no backend, etc.

Analytics

Analytics Metrics IoT Monitoring

Simplifying Form Styles With `accent-color`

Smashing Magazine

SEPTEMBER 23, 2021

I don’t know about you, but I love it when new CSS properties arrive that make our daily lives as developers simpler and enable us to remove a whole lot of redundant code. Wouldn’t it be great to get rid of all that clunky CSS? On design systems, CSS/JS and UX. Simplifying Form Styles With `accent-color`. Michelle Barker.

Media

Media Design Code Development

9 Tips To Avoid Cross-Browser Compatibility Issues from the start

Testsigma

JANUARY 4, 2021

Validate HTML and CSS. It is quite expected that developers may omit certain ‘closing tag’ or ‘semicolon’ in the syntax while writing code. W3C HTML validator Jigsaw CSS validator JS Formatter for HTML CSS Lint JS Lint. Use CSS resets. This CSS reset is done in code by using CSS reset style sheets by developers.

Testing Tools

Testing Tools Mobile Internet Internet

How To Implement Search Functionality In Your Nuxt App Using Algolia InstantSearch

Smashing Magazine

OCTOBER 1, 2021

You’ll also require a basic understanding of the following in order to follow along smoothly: HTML, CSS & JavaScript, Vue.js , Nuxt.js , TailwindCSS. On design systems, CSS/JS and UX. TailwindCSS is a utility first CSS framework that provides us with custom classes we can use to style our app. More after jump! nuxt.config.js

Media

Media Code Servers Performance

ct.css — Performance Hints via Injected Stylesheet Alone

CSS - Tricks

OCTOBER 5, 2021

This is some bonafide CSS trickery from Harry that gives you some generic performance advice based on what it sees in your <head> element. From there, Harry gets very clever with selectors, determining problematic situations from the usage and placement of certain tags. A CSS selector! It’s a nice little trick.

Performance

Performance Media Software Software

HTML Validation Testing: An Introduction plus Tools & Tips

Testlodge

OCTOBER 1, 2021

Benefits of HTML Validation Testing How to Validate HTML CSS and JavaScript Validation Challenges Tips Conclusion. Hypertext Markup Language (HTML) uses tags and attributes to control how the text in the front end of a website is displayed. It can be easy to overlook issues like open tags or misspellings during a visual check.

Testing

Testing Best Practices C++ Code

Setting Height And Width On Images Is Important Again

Smashing Magazine

MARCH 9, 2020

However, adding width and height attributes to your <img> markup have become useful again after some recent changes in the CSS world, and the quick adoption of these changes by the most popular web browsers. The CSS contain property gives you a way to explain your layout to the browser, so performance optimizations can be made.

Website

Website Code Mobile Network

Gatsby Headaches: Working With Media (Part 1)

Smashing Magazine

OCTOBER 9, 2023

If we try to load that many <img> tags at once, they will certainly slow things down and could affect the FCP. Loading Background Images In Gatsby What about pulling in the URL for an image file to use on the CSS background-url property? Using StaticImage is similar to using a regular HTML <img> tag.

Media

Media Network Processing Code

In Defence of DOMContentLoaded

CSS Wizardry

JUNE 30, 2023

Basically, the browser is now at the tag. These User Timings automatically appear in the Performance panel: I use performance.mark() and performance.measure() in a few places on this site , chiefly to monitor how long it takes to parse the and its CSS. The browser is ready to run your defer red JavaScript.

Metrics

Metrics Google Monitoring Analytics

The Simplest Way to Load CSS Asynchronously

CSS - Tricks

JULY 30, 2019

Scott Jehl: One of the most impactful things we can do to improve page performance and resilience is to load CSS in a way that does not delay page rendering. That’s because by default, browsers will load external CSS synchronously—halting all page rendering while the CSS is downloaded and parsed—both of which incur potential delays. <link

Media

Media Performance

Creating An Interactive Gantt Chart Component With Vanilla JavaScript

Smashing Magazine

AUGUST 18, 2021

On design systems, CSS/JS and UX. For the complete CSS specifications, please refer to the sample files. Rendering Of The Gantt chart With JavaScript And CSS Grid. I recommend CSS Grid for drawing the diagram area because it makes it very easy to create multi-column layouts that adapt dynamically to the screen size.

Code

Code Servers Development Availability

How to prevent hidden images from loading on responsive designs

MachMetrics

SEPTEMBER 1, 2020

Did you know that if you’re using CSS to hide images based on the screen size that they’re still being downloaded by the visitor’s browser? This is a common problem for many responsive frameworks, such as Bootstrap CSS. The <picture> tag works in the same way that CSS media queries do.

Design

Design Media Mobile Website

How to Show Images on Click

CSS - Tricks

MAY 27, 2021

We can remove the src attribute of an <img> tag to hide an image. You can see the alt tag rendered on screen automatically, but with a light dash of JavaScript, we can then swap out the src with that attribute: document.querySelectorAll("img").forEach((item) The post How to Show Images on Click appeared first on CSS-Tricks.

Website

Website Performance Design

Fixing a slow site iteratively

CSS - Tricks

APRIL 1, 2021

This is a very basic site made with simple HTML, CSS, and JavaScript. It’s even been covered a bunch right here on CSS-Tricks. This is the process of turning HTML, CSS and JavaScript into a fully fleshed out, interactive website. We’ll also build the CSS into the CSS Object Model (CSSOM). Lighthouse.

Cache

Cache Social Media Media Website

Improving The Performance Of An Online Store (Case Study)

Smashing Magazine

JUNE 2, 2021

On design systems, CSS/JS and smart interface design patterns. Many of them are covered in CSS-Tricks’ helpful overview , and Smashing Magazine offers a great PDF checklist. Let’s talk about resources, and not just CSS or JavaScript (which we will cover later). And we purged CSS directives that are no longer necessary.

Performance

Performance Cache Website Mobile

React Children And Iteration Methods

Smashing Magazine

AUGUST 4, 2021

and pass the isLast prop as we did before, but we also additionally wrap this cloned element in an anchor tag. The second statement which logs React.Children.toArray(children) logs: [ Object1, -> first anchor tag Object2, -> second anchor tag Object3, -> first fruit Object4, -> second fruit Object5, -> third fruit ].

Open Source

Open Source C++ Google Website

Make Jamstack Slow? Challenge Accepted.

CSS - Tricks

JULY 15, 2020

CSS frameworks are great. When deciding on a CSS framework use one that is modular or employs CSS-in-JS so that the only CSS you need is what’s loaded. The wrong way would be to load all the CSS and JavaScript files in the <head> of the HTML. appeared first on CSS-Tricks. Alright, SemanticUI it is!

Cache

Cache Google Analytics Servers

CSS Import

KeyCDN

MARCH 5, 2020

Cascading Style Sheets (CSS) are the design foundation of most websites. This is where the CSS @import at-rule steps in to help. The @import rule tells the CSS engine to import an external style sheet into another style sheet. CSS @import saves a lot of time, but it also provides great accuracy.

Website

Website Media Small Business Design

The Future Of Frontend Build Tools

Smashing Magazine

JUNE 9, 2022

One is with a script tag referencing a JavaScript file, and the other is to write your JavaScript directly in the HTML inside script tags. <script On design systems, UX, web performance and CSS/JS. There are two major ways to load JavaScript in the browser. With Brad Frost, Stephanie Troeth and so many others. A Replatform.

Code

Code Processing Cache Development

Automatically Transforming And Optimizing Images And Videos On Your WordPress Website

Smashing Magazine

NOVEMBER 9, 2021

Applying style to the images can be achieved with CSS. However, then the style will not be present when referencing the image directly (such as the image shared in social media via the <meta property="og:image" content="{image-url}"> tag), making the image devoid of personality.

Website

Website Social Media Media Design

Front-End Performance Checklist 2021

Smashing Magazine

JANUARY 11, 2021

Delivery Optimizations Lazy loading, intersection observer, defer rendering and decoding, critical CSS, streaming, resource hints, layout shifts, service worker. Testing And Monitoring Auditing workflow, proxy browsers, 404 page, GDPR cookie consent prompts, performance diagnostics CSS, accessibility. Quick Wins.

Performance

Performance Cache Media Metrics

Google PageSpeed Insights - Scoring 100/100 with WordPress

KeyCDN

AUGUST 29, 2019

Minify JavaScript and CSS Google PageSpeed Insights is now telling us that we need to minify our JavaScript, CSS, and HTML. Render-Blocking Resources Above the Fold Google PageSpeed Insights is now telling us that we have JavaScript and CSS above the fold. ” Under CSS Options check “Inline all CSS?”

Google

Google Cache Speed Analytics

The Humble ` ` Element And Core Web Vitals

Smashing Magazine

APRIL 29, 2021

Use CSS aspect-ratio or aspect ratio boxes to reserve space otherwise. For low impact to First Input Delay : Avoid images causing network contention with other critical resources like CSS and JS. This is an empty element — it has no closing tag — requiring a minimum of one attribute to be helpful: src , the source.

Media

Media Network Metrics Mobile

Optimize Images for Web

KeyCDN

SEPTEMBER 12, 2019

This recommendation refers to your images being scaled down from the original dimensions, either through CSS or an HTML attribute. This can be a problem in a lot of content management systems such as WordPress or Magento, because theme developers tend to scale images down in responsive themes using CSS.

Social Media

Social Media Media Google Website

Quickly understand how to improve the above-the-fold user experience of your applications

Dynatrace

APRIL 18, 2019

As you can see from the image below, CSS files and JavaScript files are not highlighted as impacting resources as this can’t be determined for sure. In the example below, a simple SPAN tag, not a resource, is causing the final trigger for Visually complete.

Speed

Speed Metrics Monitoring Engineering

Preload, prefetch and other link tags

CSS - Tricks

APRIL 24, 2019

My favorite part of this post is Ivan’s quick summary at the end which clearly defines what all these different tags can be used for: <link rel="preload"> – when you’ll need a resource in a few seconds. <link Direct Link to Article — Permalink The post Preload, prefetch and other link tags appeared first on CSS-Tricks.

Performance

Session Replay improved for continuously deployed apps: CSS file capture

Measure What You Impact, Not What You Influence

Trending Sources

Getting Your `head` Straight: A New CSS Performance Diagnostics Snippet

Speeding Up Async Snippets

Gain broader applicability for Session Replay through easier, automated and GDPR-compliant masking presets

ct.css — Performance Hints via Injected Stylesheet Alone

Don’t Sink Your Website With Third Parties

Optimizing The Image Element LCP

CSS and Network Performance

Getting to Know a Legacy Codebase

Modern Methods For Improving Drupal’s Largest Contentful Paint Core Web Vital

The Fight For The Main Thread

Digital Business Analytics: Let’s get started!

Global vs. Local Styling In Next.js

A Guide To Image Optimization On Jamstack Sites

Jetpack Boost Handles Critical CSS For You

Site-Speed Topography

Smart CSS Solutions For Common UI Challenges

DYOC: Agentless RUM, OpenKit, Metric ingest, and Business Analytics

Simplifying Form Styles With `accent-color`

9 Tips To Avoid Cross-Browser Compatibility Issues from the start

How To Implement Search Functionality In Your Nuxt App Using Algolia InstantSearch

ct.css — Performance Hints via Injected Stylesheet Alone

HTML Validation Testing: An Introduction plus Tools & Tips

Setting Height And Width On Images Is Important Again

Gatsby Headaches: Working With Media (Part 1)

In Defence of DOM­Content­Loaded

The Simplest Way to Load CSS Asynchronously

Creating An Interactive Gantt Chart Component With Vanilla JavaScript

How to prevent hidden images from loading on responsive designs

How to Show Images on Click

Fixing a slow site iteratively

Improving The Performance Of An Online Store (Case Study)

React Children And Iteration Methods

Make Jamstack Slow? Challenge Accepted.

CSS Import

The Future Of Frontend Build Tools

Automatically Transforming And Optimizing Images And Videos On Your WordPress Website

Front-End Performance Checklist 2021

Google PageSpeed Insights - Scoring 100/100 with WordPress

The Humble ` ` Element And Core Web Vitals

Optimize Images for Web

Quickly understand how to improve the above-the-fold user experience of your applications

Preload, prefetch and other link tags

Stay Connected

In Defence of DOMContentLoaded