Keep Pixelated Images Pixelated as They Scale | CSS-Tricks
This is a potentially useful bit of CSS that I had no idea existed.
Tags: images
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Lazy Loading Images and Video | Web Fundamentals | Google Developers
Jeremy Wagner offers a deep dive into lazy loading images (and video) with some advice for considering the no-JavaScript situation too.
Carbon
This service could be quite handy if you’re making a presentation that involves showing code—it generates syntax-highlighted images of code.
Compressive Images Revisited - TimKadlec.com
Tim explains why that neat trick of making a really big JPEG with quality set to 0% is no longer necessary, and how the savings you make in bandwidth with that technique are nullified by the expense of the memory footprint needed.
Swapping Images with the Sizes Attribute | Filament Group, Inc., Boston, MA
The hits just keep on coming from the Filament Group. Here Scott shares a really clever technique for creating an image magnifier using the sizes attribute of the img element.
Boxy SVG
This is impressive—a fully featured graphics app for creating SVGS right in your browser.
Metaballs
Metaballs, not to be confused with meatballs, are organic looking squishy gooey blobs.
Here’s the maths behind the metaballs (implemented in SVG).
Href Tools - Free online web tools
Handy web-based tools—compress HTML, CSS, and JavaScript, and convert files from one format to another.
edent/SuperTinyIcons: Under 1KB each! Super Tiny Icons are miniscule SVG versions of your favourite website and app logos
These are lovely little SVGs of website logos that are yours for the taking. And if you want to contribute an icon to the collection, go for it …as long as it’s less than 1024 bytes (most of these are waaay less).
Network based image loading using the Network Information API in Service Worker | justmarkup
This is clever—you can use the navigator.connection API from a service worker (because it’s asynchronous) which means you can have a service worker script that serves differently sized images based on bandwidth.
Using SVG as placeholders — More Image Loading Techniques - JMPerez Blog
Here’s a clever to technique to improve the perceived performance of image loading with a polygonal SVG placeholder.
The Contrast Swap Technique: Improved Image Performance with CSS Filters | CSS-Tricks
A clever performance trick for images:
- Reduce image contrast using a linear transform function (Photoshop can do this)
- Apply a contrast filter in CSS to the image to make up for the contrast removal
Rebuilding slack.com – Several People Are Coding
A really great case study of a code refactor by Mina, with particular emphasis on the benefits of CSS Grid, fluid typography, and accessibility.
Seeing Earth from Outer Space
A lovely interactive photo essay charting the results of what happens when evolution produces a life form that allows a planet to take selfies.
Building a CSS-only image gallery (with fallbacks)
A great step-by-step walkthrough of building a really nice image gallery without any JavaScript.
The end result is really impressive but there’s still the drawback that the browser history will be updated every time you click on an image thumbnail (because the functionality relies on ID attributes referenced via :target). Depending on your use-case, that may or may not be desirable.
“async” attribute on img, and corresponding “ready” event · Issue #1920 · whatwg/html
It looks like the async attribute is going to ship in Chrome for img elements:
This attribute would have two states:
- “on”: This indicates that the developer prefers responsiveness and performance over atomic presentation of content.
- “off”: This indicates that the developer prefers atomic presentation of content over responsiveness.
Essential Image Optimization
Following on from Amber’s introduction, here’s a really in-depth look at image formats, compression and optimisation techniques from Addy.
This is a really nicely put together little web book released under a Creative Commons licence.
When Should You Use Which Image Format? JPG? PNG? SVG?
Amber has been investigating which image formats make sense for which situations.
Choosing image format is only one step towards optimising images on the web. There are many, many other steps to consider, and so, so much to learn!
SVG can do THAT?! by sdrasner
119 slides from Sarah on a wide range of SVG magic (with code).