David Walsh Blog

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    Not All Advice is Good Advice

    From the time we're children, we're trusting people. We rely on those close and older than us to point us toward success and "the right way". One of the toughest days of our lives is when we realize our parents, or people we look...

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    Image Optimization Strategies Compared

    We all know the stats. Slower website performance is strongly linked to higher abandon rates and lower conversions. What you may not know is that the main culprit is bloated web page payloads, bringing down our otherwise performant web pages via images.That being said, images...

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    Regular Expression Match Groups

    Regular expressions are incredibly powerful but can be difficult to maintain. They're a skill you learn on the job and, when the suits walk by, make you look incredibly smart if you have a few up on your screen. How can we solve the...

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    Object.entries

    Navigating and managing data structures is a really important skill for every level of engineer to have and improve upon. Over the years, the JavaScript language has continued to provide more methods for managing data structures, from Object.keys to Object.values and so on. One...

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    CSS Smooth Scroll

    Improving the user experience of web applications has always been a priority of mine. I always come back to the same though I've had for 20 years: "users expect a web app to work -- let's make the app a joy to use."...

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    Monitor Your SEO Placement with SEObase

    Search engine optimization is big business; both SEO experts and their customers want to track the effectiveness of their keywords, campaigns, and competition. To get and measure those results, however, you need the right tooling monitor those results. SEObase is an awesome tool for doing...

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    Five Top Quality APIs

    It's easy to think about creating beautiful UIs for presenting data when you don't consider the effort that goes into gathering and serving the data itself. Here's the thing -- thanks to apilayer, you can focus on your UIs and not the pain of API...

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    Intl.NumberFormat

    Formatting numbers on the client side is an important task, especially when you consider how much raw API usage is in play these days. What's also important is ensuring those numbers are meaningful to users, no matter where they are in the world, especially if...

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    Detect CSS Overflow Elements

    Every once in a while you encounter a CSS annoyance that takes some cleverness to discover. One such case rears its ugly head in unwanted and unexpected scrollbars. When I see unwanted scrollbars, I usually open developer tools, click the element inspector, and hover...

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    How to Mine Ethereum

    Note: I expect a large number of people to object to cryptocurrency mining's energy use and I totally understand. Hell, I agree. A few notes to consider: first, this will soon be remedied by Ethereum switching to proof os stake. Second, much...

Popular Features

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    39 Shirts – Leaving Mozilla

    In 2001 I had just graduated from a small town high school and headed off to a small town college. I found myself in the quaint computer lab where the substandard computers featured two browsers: Internet Explorer and Mozilla. It was this lab where I fell...

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    Tips for Starting with Bitcoin and Cryptocurrencies

    One of the most rewarding experiences of my life, both financially and logically, has been buying and managing cryptocurrencies like Bitcoin, Litecoin, Ethereum. Like learning any other new tech, I made rookie mistakes along the way, but learned some best practices along the way. Check out...

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    Interview with a Pornhub Web Developer

    Regardless of your stance on pornography, it would be impossible to deny the massive impact the adult website industry has had on pushing the web forward. From pushing the browser's video limits to pushing ads through WebSocket so ad blockers don't detect them, you have...

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    Welcome to My New Office

    My first professional web development was at a small print shop where I sat in a windowless cubical all day. I suffered that boxed in environment for almost five years before I was able to find a remote job where I worked from home. The first...

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    How to Create a RetroPie on Raspberry Pi – Graphical Guide

    Today we get to play amazing games on our super powered game consoles, PCs, VR headsets, and even mobile devices.  While I enjoy playing new games these days, I do long for the retro gaming systems I had when I was a kid: the original Nintendo...

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    Conquering Impostor Syndrome

    Two years ago I documented my struggles with Imposter Syndrome and the response was immense.  I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions.  I've even caught myself reading the post...

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    Being a Dev Dad

    I get asked loads of questions every day but I'm always surprised that they're rarely questions about code or even tech -- many of the questions I get are more about non-dev stuff like what my office is like, what software I use, and oftentimes...