~frontendfocus | Issue 657 - Making your page faster before it even loads (19)

heic-to: Convert HEIC/HEIF Images to JPEG or PNG In-Browser — HEIF is a modern container format for storing images but is frequently unsupported by many tools, so converting supplied HEIF images to more popular formats could be useful.

The State of CSS 2024 Survey — The increased pace of evolution in the CSS space seems to show no signs of slowing, as such we can now do so much more than we could just a few short years ago (be that advanced math, scroll-triggered animations, etc). As such, this recently launched survey — which covers things like layout, color, typography, accessibility, and more...

How to Make Your Web Page Faster Before It Even Loads — Can we measure the events that happen before the first byte of a web page is received by the browser, and in turn optimize them to make our web pages and apps load even faster?

Front-End System Design — Learn to create scalable, efficient user interfaces in this extensive video course by Evgennii Ray. Explore the box model, browser rendering, DOM manipulation, state management, performance and much more.

Can You Convert a Video to Pure CSS? — Can or should..? A highly detailed exploration of using scroll-based animations as a way to play video as just CSS. David has also made a neat browser-based tool for converting any video into a pure CSS keyframe animation ready to be dropped into your site.

blocking=render: Why Would You Do That?! — Harry stresses that unless you know you need this behavior, you don’t need it.

Custom Range Slider Using Anchor Positioning & Scroll-Driven Animations — It’s still a touch early to truly adopt these two features (only Chrome and Edge have full support today), but it can’t hurt to explore both Anchor positioning and scroll-driven animations to get an overview of just what could be done in the near future – it's a nifty effect!

🙈 Spoiler Alert: It Needs to Be Accessible — Here’s what Scott would expect from a would-be spoiler component, “if someone were to build one, or if one were to ever be standardized”.

Basic Keyboard Shortcut Support for Focused Links — Turns out there’s a lot of different actions you can perform via the keyboard when an anchor element is focused.

Double Your Specificity with This One Weird Trick — A bit of a hack, sure, but by doubling up the relevant selector(s) you can boost your specificity without resorting to overrides or using !important.

Five WASM Use Cases for Frontend Development — WebAssembly is gaining ground in frontend development, so how should you consider applying it?

Web Vitals: Chrome Extension for Instant Feedback on Loading, Interactivity and Layout Shift Metrics — Includes support for all of the Core Web Vitals.

Replace Twitter (X) Embeds with Semantic HTML — A Python script for converting a public Tweet into embedded, semantic HTML.

The Monospace Web — A well formed, minimalist CSS design exploration, featuring lists, tables, charts, ASCII drawings, etc.

Fuite 5.0: A Tool for Finding Memory Leaks in Web Apps — A CLI tool that you can point at a URL to analyze for memory leaks. Here’s how it works. There’s also a video tutorial.

Milkdown: Plugin-Driven WYSIWYG Markdown Editor Framework — A lightweight WYSIWYG Markdown editor based around a plugin system that enables a significant level of customization. It’s neat to see the docs are rendered by the editor itself. GitHub repo.

Create Interactive Tutorials in the Browser — TutorialKit enables you to create interactive tutorials instantly without building or managing any backend infrastructure.