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Masking GIFs with other GIFs
3.12.2019
The other day, Cassie Evans tweeted a really neat trick that I’ve never seen before: using SVG to mask one GIF on top of another. The effect is quite lovely, especially if you happen to grab a colorful GIF and place it on top of a monochrome one:
See the Pen
Masking gifs with other gifs......
Motion Paths – Past, Present and Future
3.12.2019
The ability to animate along a motion path is a really useful thing to have in your SVG animation toolkit. Let's explore a few ways to achieve this, including the upcoming CSS motion path module and the newly released GSAP3.
Motion Paths – Past, Present and Future was written by Cassie Evans...
Mirror Android Device to Computer
26.11.2019
As I continue my adventure into Android development, pair programming has been a huge help in learning this new platform. When it’s time to build and run the app, relying on the emulator is a fools’ game — the emulator is slow and it’s hard to reliably simulate gestures....
Image Lazy Loading
25.11.2019
Lazy loading images is a practice that’s been popular for a decade and for good reason: images are usually the heaviest downloads on a given webpage and avoiding unloading images that are never seen saves the user bandwidth. There are plugins for lazy loading images in every JavaScript...
Getting Started with GraphQL
20.11.2019
GraphQL was developed by Facebook in 2012 to power up its mobile apps. Since open-sourcing GraphQL specification in 2015, it gained a lot of popularity and is now used by many development teams, including giants like GitHub, Twitter or Airbnb. Why so? And what exactly is a GraphQL? Let's take...
Real-Time Google Search Results API with serpstack (Sponsored)
19.11.2019
In my early web days, I was interested in scraping and collecting data based on the results of Google searches. Scraping Google was easier in those days but now Google search results are so dynamic that you can’t rely on getting the same HTML or data structure back. Add in CAPTCHAs, rate...
The Amazingly Useful Tools from Yoksel
15.11.2019
I find myself web searching for some tool by Yoksel at least every month. I figured I'd list out some of my favorites here in case you aren't aware of them.
Need to duo-tone an image? SVG filters can do that. Lentie Ward wrote about it for us, and Yoksel has a tool to create the filters...
The New Features of GSAP 3
14.11.2019
Learn about all the exciting new features of GSAP 3 in this easy-to-follow overview.
The New Features of GSAP 3 was written by Christina Gorton and published on Codrops
When to Use SVG vs. When to Use Canvas
12.11.2019
SVG and canvas are both technologies that can draw stuff in web browsers, so they are worth comparing and understanding when one is more suitable than the other. Even a light understanding of them makes the choice of choosing one over the other pretty clear.
A little flat-color icon? That's...
Hello Fenix!
11.11.2019
Over seven years ago I made the massive career leap to Mozilla. Two years ago I realized a dream of joining the Firefox DevTools team — it’s been a rewarding adventure helping to improve the Firefox DevTools Debugger and other super helpful tools. I’m frightened, excited,...
JavaScript waitForTime
6.11.2019
I write a lot of tests for new features within Firefox DevTools. We have hundreds of “mochitests” which open the browser and perform synthetic actions like clicking, typing, and other user actions. I’ve previously written about waitForever which essentially halts following actions...
Making a Chart? Try Using Mobx State Tree to Power the Data
5.11.2019
Who loves charts? Everyone, right? There are lots of ways to create them, including a number of libraries. There’s D3.js, Chart.js, amCharts, Highcharts, and Chartist, to name only a few of many, many options.
But we don’t necessary need a chart library to create charts. Take Mobx-state-tree (MST)...
Simple Scraping API with zenscrape (Sponsored)
5.11.2019
So many developers believe that scraping a URL’s content is easy — just a simple curl and you’re done, right? Nope. CAPTCHAs, rate limitations, origin-specific limitations — they make getting content off the web a nightmare. Luckily we now have services like zenscrape which...
5 Easy Ways to Earn Cryptocurrency
4.11.2019
The days of individuals mining popular cryptocurrencies are over. The amount of time and energy required to mine bitcoin is immense and you’d be competing with business with massive mining farms. What you can do, however, is chip away at earning cryptocurrency via a few simple tasks that...
Digging Into the Preview Loading Animation in WordPress
22.10.2019
WordPress shipped the Block Editor (aka Gutenberg) back in version 5.0 and with it came a snazzy new post preview screen that shows the WordPress logo drawing itself while the preview loads.
That's what you get when saving a post draft and clicking the "Preview" button in the editor. How'd they...
How to Use JPEG 2000 (JP2) for a Faster Images on iPhone (Sponsored)
21.10.2019
Images Slow Down Websites Images slow down the page-loading performance of many websites. Audit tools like Google’s Lighthouse can quickly tell you how many seconds you can save by optimizing your images. When you are delivering to desktops or android devices running Chrome browser, a quick...
Firefox Kiosk Mode
16.10.2019
As someone who loves the HTML and web APIs, I want to see them used in all different types of devices and mediums. Being that I work for the amazing Mozilla Corporation, seeing Firefox and the gecko web engine thrive in those spaces is important to me. Firefox was recently featured in the Firefox...
How to Create a QR Code
15.10.2019
QR codes aren’t everyone’s cup of tea but I quite like them. If I see something I want to remember or check out later, especially when on the road, it’s super easy to take a quick picture — it’s much easier than trying to remember a URL and much faster than typing...
Scrape the Web with scrapestack (Sponsored)
14.10.2019
I first grew to love Firefox not as a web developer but as user, and what drew me to this amazing new browser was its add-on ecosystem. The add-on I used the most? Web scrapers. Piracy had just hit mainstream and I also need imagery and documentation to create my first websites. Scrapers were...
Two Images and an API: Everything We Need for Recoloring Products
11.10.2019
I recently found a solution to dynamically update the color of any product image. So with just one <img> of a product, we can colorize it in different ways to show different color options. We don’t even need any fancy SVG or CSS to get it done!
We’ll be using an image editor (e.g. Photoshop...