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70

We need a Right To Compute

from David Heinemeier Hansson [alt+shift+b] in programming

The App Store dispute can be boiled down to one big question: Is the iPhone a computer or not? If it’s a computer, we ought to have the right to compute. Like consumers have won the right to repair. If it’s a computer, it ought to be yours, and you ought to have the right to install whatever software you should so choose. If it’s not a computer, then what is it? A gaming console? An appliance? A toy? There’s a spectrum in those definitions where consumers perhaps wouldn’t expect the right to install software of their own choosing, even if there’s a “computer” somewhere inside it. And I suspect it’s that mental model that animates the Apple Stans on this issue. They want to escape from the freedom of owning a computer. But I think most people, when it comes down to it, believe that their smartphone is indeed a real computer. And that after paying $1,000 for this computer, they should be able to install whatever software they should so choose. Without having to ask Apple or Google for permission. That they should be able to have a direct relationship with companies like Adobe or Epic or Netflix or 37signals, which isn’t intermediated by some toll-booth operator telling them what’s allowed or asking for an outrageous cut. Just like they’ve been able to do with every modern personal computer since the dawn of computing. Mac developers are rightfully worried that this golden era of computing is coming to an end, though. That Apple is signalling a future where every piece of software that runs on computers has to be approved by app store bureaucrats, busy protecting the business model of the platform. And I think they’re right to worry about this, so now is the time to enshrine this right to compute. While people still remember what it’s like to be free to install software of their own choice. The irony here is that Apple has the best argument for why that freedom is perfectly compatible with a safe computing platform: The Mac. It’s has been an incredibly stable and...
26th Jan 2024

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More from David Heinemeier Hansson

Pay yourself first

There'll always be more emails in need of reply, more meetings to attend, and more updates to read. A person can fill the entire workweek with these tasks over and over again. But to stay sane and sharp, you must pay yourself first by doing the work that actually means something to you. I feel this acutely as someone responsible to employees, customers, followers, and readers. I could do nothing all day but check up on projects, people, and posts, but my brain would quickly check out if it was just doing that. So quite frequently, I just don't. Don't check in, don't check up, and instead dive into the work that checks my own intellectual boxes. Programming for the love of it. Experimenting for the hell of it. Researching for the fun of it. In another age, I might have been tempted to apologize for such privilege, but screw that. Privilege is wonderful. You should do your best to earn more of it. Even if you have to carve it out of the bare rocks around you. Ironically, the best way to do that is also to choose to always pay yourself first, however little at first. By solving your own problems, tickling your own interests, chasing your own curiosity. That's where you'll find the motivation to elevate your talent. To turn interest into competency.  And once you've developed some competency, you'll be rewarded with more privilege to build it further. This is the virtuous circle of merit. There'll always be an endless list of work that could be done. You'll never get through it all and onto your own priorities, if you continue to put them at the bottom.

4th Oct 2025 • 27 votes
Thrice charmed at Rails World

The first Rails World in Amsterdam was a roaring success back in 2023. Tickets sold out in 45 minutes, the atmosphere was electric, and The Rails Foundation set a new standard for conference execution in the Ruby community. So when we decided to return to the Dutch Capital for the third edition of the conference this year, the expectations were towering. And yet, Amanda Perino, our executive director and event organizer extraordinaire, managed to outdo herself, and produced an even better show this year.  The venue we returned to was already at capacity the first time around, but Amanda managed to fit a third more attendees by literally using slimmer chairs! And I didn't hear any complaints the folks who had to sit a little closer together in order for more people to enjoy the gathering. The increased capacity didn't come close to satisfy the increased demand, though. This year, tickets sold out in less than two minutes. Crazy. But for the 800+ people who managed to secure a pass, I'm sure it felt worth the refresh-the-website scramble to buy a ticket.   And, as in years past, Amanda's recording crew managed to turn around post-production on my keynote in less than 24 hours, so anyone disappointed with missing out on a ticket could at least be in the loop on all the awesome new Rails stuff we were releasing up to and during the conference. Every other session was recorded too, and will soon be on the Rails YouTube channel. You can't stream the atmosphere, the enthusiasm, and the genuine love of Ruby on Rails, though. I was once again blown away by just how many incredible people and stories we have in this ecosystem. From entrepreneurs who've built million (or billion!) dollar businesses on Rails, to programmers who've been around the framework for decades, to people who just picked it up this year. It was a thrill to meet all of them, to take hundreds of selfies, and to talk about Ruby, Rails, and the Omarchy expansion pack for hours on the hallway track! I've basically stopped doing prepared presentations at conferences, but Rails World is the one exception. I really try my best to put on a good show, present the highlights of what we've been working on in the past year at 37signals, and transfer the never-ending enthusiasm I continue to feel for this framework, this programming language, and this ecosystem.  True, I may occasionally curse that commitment in the weeks leading up to the conference, but the responsibility is always rewarded during and after the execution with a deep sense of satisfaction. Not everyone is so lucky as I've been to find their life's work early in their career, and see it continue to blossom over the decades. I'm eternally grateful that I have. Of course, there's been ups and downs over the years — nothing is ever just a straight line of excitement up and to the right! — but we're oh-so-clearly on the up-up-up part of that curve at the moment. I don't know whether it's just the wind or the whims, but Rails is enjoying an influx of a new generation of programmers at the moment. No doubt it helps when I get to wax poetically about Ruby for an hour with Lex Fridman in front of an audience of millions. No doubt Shopify's continued success eating the world of ecommerce helps. No doubt the stability, professionalism, and execution from The Rails Foundation is an aid. There are many auxiliary reasons why we're riding a wave at the moment, but key to it all is also that Ruby on Rails is simply really, really good! Next year, with RailsConf finished, it's time to return to the US. Amanda has picked a great spot in Austin, we're planning to dramatically expand the capacity, but I also fully expect that demand will continue to rise, especially in the most prosperous and successful market for Rails. Thanks again to all The Rails Foundation members who believed in the vision for a new institution back in 2022. It looks like a no-brainer to join such a venture now, given the success of Rails World and everything else, but it actually took guts to sign on back then. I approached quite a few companies at that time who could see the value, but couldn't find the courage to support our work, as our industry was still held hostage to a band of bad ideas and terrible ideologies. All that nonsense is thankfully now long gone in the Rails world. We're enjoying a period of peak unity, excitement, progress, and determination to continue to push for end-to-end problem solving, open source, and freedom. I can't tell you how happy it makes me feel when I hear from yet another programmer who credits Ruby on Rails with finding joy and beauty in the writing web applications because of what I started over 22 years ago. It may sound trite, but it's true: It's an honor and a privilege. I hope to carry this meaningful burden for as long as my intellectual legs still let me stand. See you next year in Austin? I hope so!

6th Sep 2025 • 38 votes
Omarchy is on the move

Omarchy has been improving at a furious pace. Since it was first released on June 26, I've pushed out 18(!) new releases together with a rapidly growing community of collaborators, users, and new-to-Linux enthusiasts. We have about 3,500 early adopters on the Omarchy Discord, 250 pull requests processed, and one heck of an awesome Arch + Hyprland Linux environment to show for it! The latest release is 1.11.0, and it brings an entirely overhauled control menu to the experience. Now everything is controlled through a single, unified system that makes it super fast to operate Omarchy's settings and options through the keyboard. It's exactly the kind of hands-off-the-mouse operation that I've always wanted, and with Linux, I've been able to build it just to my tastes. It's a delight. There's really something special going on in Linux at the moment. Arch has been around for twenty years, but with Hyprland on top, it's been catapulted in front of an entirely new audience. Folks who'd never thought that open source could be able to deliver a desktop experience worth giving up Windows or macOS for. Of course, Linux isn't for everyone. It's still an adventure! An awesome, teach-you-about-computers adventure, but not everyone is into computer adventures. Plenty of people are content with a computer appliance where they never have to look under the hood. All good. Microsoft and Apple have those people covered. But the world is a big place! And in that big place, there are a growing number of computer enthusiasts who've grown very disillusioned with both Microsoft and Apple. Folks who could be enticed to give Linux a look, if the barrier was a little lower and the benefits a little clearer. Those are the folks I'm building Omarchy for.

5th Aug 2025 • 50 votes
Get in losers, we're moving to Linux!

I've never seen so many developers curious about leaving the Mac and giving Linux a go. Something has really changed in the last few years. Maybe Linux just got better? Maybe powerful mini PCs made it easier? Maybe Apple just fumbled their relationship with developers one too many times? Maybe it's all of it. But whatever the reason, the vibe shift is noticeable. This is why the future is so hard to predict! People have been joking about "The Year of Linux on the Desktop" since the late 90s. Just like self-driving cars were supposed to be a thing back in 2017. And now, in the year of our Lord 2025, it seems like we're getting both! I also wouldn't underestimate the cultural influence of a few key people. PewDiePie sharing his journey into Arch and Hyprland with his 110 million followers is important. ThePrimeagen moving to Arch and Hyprland is important. Typecraft teaching beginners how to build an Arch and Hyprland setup from scratch is important (and who I just spoke to about Omarchy). Gabe Newell's Steam Deck being built on Arch and pushing Proton to over 20,000 compatible Linux games is important. You'll notice a trend here, which is that Arch Linux, a notoriously "difficult" distribution, is at the center of much of this new engagement. Despite the fact that it's been around since 2003! There's nothing new about Arch, but there's something new about the circles of people it's engaging. I've put Arch at the center of Omarchy too. Originally just because that was what Hyprland recommended. Then, after living with the wonders of 90,000+ packages on the community-driven AUR package repository, for its own sake. It's really good! But while Arch (and Hyprland) are having a moment amongst a new crowd, it's also "just" Linux at its core. And Linux really is the star of the show. The perfect, free, and open alternative that was just sitting around waiting for developers to finally have had enough of the commercial offerings from Apple and Microsoft. Now obviously there's a taste of "new vegan sees vegans everywhere" here. You start talking about Linux, and you'll hear from folks already in the community or those considering the move too. It's easy to confuse what you'd like to be true with what is actually true. And it's definitely true that Linux is still a niche operating system on the desktop. Even among developers. Apple and Microsoft sit on the lion's share of the market share. But the mind share? They've been losing that fast. The window is open for a major shift to happen. First gradually, then suddenly. It feels like morning in Linux land!

3rd Jul 2025 • 75 votes
Omarchy: Bottling that inspiration before it spoils

Over the years, I've learned not to question inspiration. To simply let it drive when it shows up with a full tank. Quite often, I don't exactly know where we're going or even why we're going, but it's repeatedly taken me to just the right place at just the right time, so now I just hop in and say: Let's go! Case in point: Arch + Hyprland. It's been over a year since I created Omakub to smooth out my own exit path from macOS to Linux, and in the process, helped thousands of others enjoy a beautiful, preconfigured, and relatively familiar desktop experience with Ubuntu. And I continue to think this is an excellent choice for Linux, especially for first-time Mac and Windows defectors. But this weekend, I just happened to be home alone, and the hype around Arch + Hyprland got the better of me. While Ubuntu is all about being a friendly place for newcomers to Linux, Arch + Hyprland is the exact opposite: It's Linux on hard mode!  At least that's the reputation, and there's certainly something to that. The Arch ISO literally just dumps you into a terminal with scarcely any direction. Just getting on the Wi-Fi requires learning the arcane command-line options for the iwctl terminal configurator. But besides iwctl, it's actually not that bad anymore. We now have a cheat code for installing Arch in the form of archinstall. It's a terminal interface for getting all the bits like picking a disk and creating the first user done in the correct order, without having to set aside an entire evening just to get the OS installed. So it didn't take long to get Arch up and running. That doesn't get you much further, though! By default, Arch is about as minimal as it gets. There's no default graphical interface. There are no niceties. Not even wget or curl by default! It really is just a bare-bones installation of Linux. But on the other hand, Arch is blessed with the AUR — a Wikipedia-style, community-maintained package management system that seems to have literally every piece of software ever released on Linux, and always in the latest version. A quarter of Omakub is trying to work around the fact that helpful tools like Alacritty or LazyGit or whatever rarely have official packages for Ubuntu, so you're left doing a lot of manual scripting to get everything a developer would want from a modern Linux setup. Not so with the AUR! So that's Arch. But Hyprland is even more hilarious. It's a tiling window manager with something as rare in the Linux world as a keen focus on aesthetics! It looks like it was written by visual artists rather than neckbeards. And it's at the core of the modern r/unixporn Linux ricing subculture. That's not the funny part, though. The funny part is how ridiculously atomized the entire thing is. Hyprland comes with absolutely nothing out of the box. No login screen, no menu bar, no notification system, no file manager, no visual settings application. Just a text-based configuration file, a wiki, and an outline on a map for how to design your own adventure. This means that if you're interested in running Hyprland, and you intend to set it all up from scratch, you're probably signing up for at least a good 10+ hours — just to install and configure everything! Now, there are some precompiled setup scripts out there already, but most of them still require you to do a ton of manual legwork before you reach that beautiful summit of a complete system. So while the downside of Arch + Hyprland is that literally every last detail requires you to make a choice and a config file to move on, it's also its upside: you can change EVERYTHING! And the core window tiling magic of Hyprland is one of the most intoxicating ways of using a computer that I've ever experienced. It looks amazing; it feels amazing (if you prefer using a keyboard instead of a mouse!). I've poured hours and hours into this quest over the weekend, and yet I'm still not even done with my first Arch + Hyprland build! My login screen looks like shit. I haven't decided on a final menu bar configuration. But what is working — the basic tiling flow and look — is so nice that the inspiration keeps driving the project forward. Which, of course, I've already decided to codify. I'm not going through all this work to set up a beautiful, preconfigured, fully-functional, out-of-the-box Arch + Hyprland combo and then not share it with anyone who's curious (and might not have 10–20 hours for this kind of side quest available in their schedule). So of course I registered a domain and found a way to draw some ASCII art: Omarchy is on the way!

2nd Jun 2025 • 75 votes

More in programming

My new digital home

It's time for a dev blogger's favorite topic: blogging about my new blogging setup. After migrating my blog from Hexo to Eleventy, building a photography website and creating a personal one-pager, it was time to find a new digital home for all my projects. If you notice any issue after the migration, please let me know. I redirect the RSS feed to the new domain, but you might want to update the feed URL in your reader. Motivation I've been maintaining three different websites under two different names: a mostly developer-oriented blog, a photography portfolio and a one-pager gluing everything together. When I started blogging about my sabbatical journey, I was thinking about making yet another page to create a clear separation. I've decided to do the opposite and merge all my websites into one instead. As I further reduce my dependency on social media and third-party services, it has become even more important to have my own space and practice POSSE. Every decision I've made was driven by two main goals: simplicity and personality. Setup I've stopped chasing the latest and greatest. I want to keep the setup as clean as possible, which means pulling fewer dependencies. Every package adds complexity and maintainability costs, so I've only added what was necessary — no more Gulp, Sass or Tailwind. Instead of taking one of my existing websites as a starting point, I created this project from scratch. I reused some of my previous code, but I didn't want to take over any technical debt (especially with the advancements in CSS). The foundation of this website hasn't changed: Eleventy (Build Awesome). It covers the fundamentals of a static site and offers a great level of customization. I've made my project more and less dependent on Eleventy at the same time: I replaced Gulp as my build pipeline with pure Eleventy processing. I replaced most shortcodes with Markdown alternatives (and markdown-it plugins), which are better supported by editors like Obsidian. I've also replaced the Nunjucks template engine with Liquid, which comes with a few trade-offs. The main reason was to avoid creating a new collection for every set of posts I render. With Liquid, you can apply array functions like filtering or sorting in the template itself: {% assign drafts = collections.all | where: "data.isDraft" | reverse %} {% for draft in drafts %} … {% endfor %} Another advantage is having date formatting included, so I don't need another library or custom code. You can even set a default date format, so you don't have to provide it each time. What I don't like is the verbosity of the template language, although I've gotten used to it by now. Nunjucks: {{ "/tags/" + tag + "/" }} {{ modified or created or date }} {% set perspectives = ["dev", "photography", "life"] %} Liquid: {{ "/tags/" | append: tag | append: "/" }} {{ modified | default: created | default: date }} {% assign perspectives = "dev, photography, life" | split: ", " %} After migrating my existing content, I've noticed the build taking way too long, both in the dev server and the production build. I've found out that the Eleventy template cache is turned off for Liquid by default. This was useful during development, but when updating actual content, it caused every template and partial to be constantly recalculated. After turning the cache on, this issue was resolved: eleventyConfig.setLiquidOptions({ cache: true }); Check the colophon for the full tech stack overview. Perspectives The main challenge was finding a way to separate and present my main personas. The Venn diagram intersection of people interested in software development, photography and my personal life is probably small. I could use tags, but they don't offer the level of personalization I was looking for. Most personal blogs separate the content by post type (blog post, note, photo), but this doesn't fit my use case. Instead, I've decided to structure my website around three perspectives, a term I have borrowed from the Eclipse IDE. Each perspective comes with its own avatar, tagline and bio. If someone is interested in everything I share (hi Mom!), they can still view all my posts. Design Since building my photography website, I've made many changes, but I never got around to share an update. The biggest change was the design, which I have used as a blueprint for the new website. I've decided to mimic a social timeline/feed, which most people are familiar with. At the same time, it should be clear that it's a personal website and not yet another walled garden. Typography is an important part of every design. The first step is to choose between a system font stack and a custom font, which comes with the usual performance vs. personality trade-offs. I've decided to go with a uniform look across all devices. I've settled on Source Sans 3 for copy text and Hack for code. Another big change was introducing a sidebar. I always felt like the empty horizontal space was "wasted" on a desktop device, but getting the sidebar UX right is challenging. I'm happy with the result, especially with the last two panels adding a personal touch to the design. Images I've made several changes to the handling of image files. To make them compatible with Markdown editors, I had to replace my custom picture shortcode. The official Eleventy image plugin is a popular choice, but it violates my simplicity goal and doesn't support everything I needed. I've decided to go with a plain Markdown image markup and a single image file (no format fallback or 2x version for retina displays). Additionally, I wrote a markdown-it plugin to turn the optional title parameter into a caption. As for the file format, both WebP and AVIF have excellent browser support. For each image, I select the format based on the quality and file size. For my photos, I'm using WebP for the timeline thumbnails and JPG for the full-size version. Theme picker There have been some recent discussions about dark mode toggles, and I considered going for a light/dark solution based on the user's OS preference. Driven by the personality goal, I knew I had to add at least one more theme, so a proper theme picker was necessary. Similar to navigation, people like to hide the theme selection on mobile devices behind a burger menu or a dropdown. I prefer the solution by Sarah L. Fossheim, where all available themes are displayed above the page footer. A friend was scrolling through my new website, and their first question was "Why is the theme picker in the footer?". This tells me the solution was a good idea — I don't think he would have noticed a typical theme button in the header. The implementation follows standard practices: Use the light or dark theme as default based on the user's OS or browser preference. Store a selected theme in the local storage and use it as the single source of truth. Prevent a flash of inaccurate color theme. Make the theme play nicely with bfcache. I might have slightly gone overboard with my third theme, but the nostalgia kept me adding more and more features. Enjoy going back to the 90s: Feeds As browser vendors decided to remove XSLT support, I didn't bother to style my feed. Instead, I've created a new web feeds page, listing all available feeds and a short explanation. I provide one feed for every perspective and one with all my posts combined. I once offered tag-based RSS feeds. This was useful for my sabbatical, but even there I had only a single subscriber. Now, all tag feeds redirect to their main perspective feed. I've also dropped the JSON feed, despite having at least 16 subscribers. Given that every web feed reader supports Atom feeds, I don't see the value of providing a JSON alternative. A JSON feed doesn't add much complexity, but handling different media types (post, photo) and properly escaping the content is one more thing to implement and maintain. Quality assurance I've put a lot of effort into my new digital home, and I want to make sure it stays in good shape. I've included several tools, most running automatically as part of the CI pipeline: eleventyDataSchema — lint Eleventy data values like titles or dates markdownlint — format/lint Markdown files Vale — lint content (grammar, writing style, formatting) Lychee — find broken links (internal and external) Evaluatory — check accessibility and validate HTML Oxlint — lint JavaScript files Eleventy linters are another option to analyze a template's output, but I haven't found a use case for it yet. Not everything can be automated, so I also did the following manually: Test with Chrome, Firefox and Safari Test with Polypane Test with Google Lighthouse Test with a screen reader Test with JavaScript disabled Test with CSS disabled Test at 200% zoom Test with a bigger browser font size Test with custom fonts disabled Test with delayed assets Performance It's difficult to compare the performance of two separate websites with that of a combined one. Some parts got worse, e.g. bigger font files and more CSS. At the same time, I've noticed that gzip compression was turned off for anything but HTML for a few years now (I must have missed it when upgrading nginx) 🙈. One improvement was to implement on-demand assets. For example, the lite-youtube-embed CSS and JavaScript is only loaded if a <lite-youtube> element is present on the page. As before, JavaScript is fully optional (except for interactive demos in individual posts). I've been using a mix of <noscript> and CSS to hide elements that require JS (like the theme picker). I don't like the user experience of pagination, so I avoided it for years. But now that I have almost 300 posts, I've decided to finally add it. I display 30 posts per page, with images further down still being lazy-loaded for better performance. I haven't applied pagination to tag pages, as that's more complex with Eleventy. Bits and pieces Here are some other noteworthy changes: I've removed post-specific social share images and use a single WebP Open Graph image instead. I've dropped JSON-LD. Open Graph and microformats are sufficient. "Naming is hard" is a common expression in software development, but it also applies to photograph titles. I've decided to use a counter as the title, e.g. #0100. Sometimes I do come up with a title that I love, like the Castle in the Sky, so I might mention it in the description. On a photo page, you can now open the previous/next photo using the left/right arrow keys (in addition to the existing navigation buttons). It's now possible to filter photos by date, gear, or location. Check the explore page for an overview. I've learned about and used some experimental CSS features (with progressive enhancement), like scroll-triggered animations or squircle corners. I've added an AI statement on my LLM usage. I finally have a proper about page. Cool URIs don't change, but it's inevitable when moving to a new domain. All my previous URLs are redirected, except for some assets that are no longer used. I will keep the old domain, so the redirects will continue to work for a foreseeable future. I've kept my previous Easter egg and added a few more. Have a happy hunt! 🕵️‍♂️ Inspiration I visited hundreds of personal websites looking for inspiration. Here are a few that I kept coming back to: Emma Goto. I love Emma's approach to presenting the variety of her interests, even though I went a different route. Brennan Kenneth Brown. This website has so much to offer. It's a great example of what the open web looks like. Rex Barrett. The sentence "Collecting hobbies is my hobby." hit home — so much that I had to steal borrow it for my short life bio. Conclusion This project was mostly about merging the content of two websites into one. I knew this would take a considerable amount of time, but I still greatly underestimated the effort. In the end, it was all about the journey, not the destination. I loved fine-tuning the design and tweaking little details that probably no one will ever notice. I still have many more ideas left in my backlog. How do you like my new digital home? If you have an opinion, let me know! Reply via email

7 hours ago • 1 votes
Industrial Growth

New electronica album by Warrington-Runcorn New Town Development Plan

7 hours ago • 1 votes
Verifying my web archives with Playwright

To protect against link rot and disappearing content, I save local copies of web pages I like into my web archive. Ideally, this archive is completely self-contained. I want a local copy of each page’s HTML and all the assets it depends on (CSS, images, scripts, and so on). I don’t want my archived pages fetching resources from the original website, which could disappear at any time. Initially, I was verifying self-containedness by hand. I’d open each saved page in a web browser, and check the browser dev tools. I’d check the Console tab for errors and failed requests, and watch the Network tab for requests going out to the internet. That approach was tedious and error-prone, and I wanted something better. I now automate the process using Playwright, a testing framework that allows you to control web browsers. I open each page using Playwright, and check if it’s making external requests. Detecting external requests in Playwright When you open a page in Playwright, you can subscribe to request events which tell you when the page issues a request. In this Python snippet, we start Playwright, start a WebKit browser, and open a new page. We tell the page to append external requests to a list, and then load example.com. We see that example.com makes two requests on page load: one for https://example.com, and one for a JavaScript file. from contextlib import closing from playwright.sync_api import sync_playwright with ( sync_playwright() as p, closing(p.webkit.launch()) as browser, closing(browser.new_page()) as page, ): requests = [] page.on("request", lambda msg: requests.append(msg)) page.goto("https://example.com") print("requests:", requests) # requests: [<Request url='https://example.com/' method='GET'>, # <Request url='https://example.com/s.js' method='GET'>] In a more complex scenario, we might use Playwright to interact with the page after loading – for example, clicking a button or filling in a form, and then we could see the requests triggered by each action. Once we have a list of requests made by the page, we can inspect the url property to check if any of them were fetching from an external website. I wrote a function is_external_request to carry out this check: from playwright.sync_api import Request import urllib.parse def is_external_request(req: Request, original_url: str) -> bool: """ Check if a request has a different origin than the original URL. A request is considered internal if: - it matches the original URL exactly - it has the same scheme, host, and port as the original URL - it uses a `blob:` scheme (for example, in-memory media representations) """ if req.url == original_url: return False # Compare the scheme/host of the request to that of the original URL. org_url = urllib.parse.urlsplit(original_url) req_url = urllib.parse.urlsplit(req.url) if org_url.scheme == req_url.scheme and org_url.netloc == req_url.netloc: return False # Ignore blob: URLs, which are in-memory representation of some data, # and not an external request. # # Playwright detects blob: URLs when loading media files; for example # using the <audio> or <video> tag. if req_url.scheme == "blob": return False # Fail open: if we can't decide if a request was internal or external, # assume it was external. return True assert_page_is_self_contained(ctx, url) I’ve wrapped these two steps in a function assert_page_is_self_contained(ctx, url), which is part of my chives utility library. The function takes a Playwright Browser (or BrowserContext) and a URL, then: Opens a new page in the browser Loads the URL in the page Checks what happened when the page completes loading It throws an exception if there are any: Uncaught page exceptions or errors Console warnings or errors Non-GET requests Requests targeting external resources The function tries to trigger important network requests that might be skipped on the initial page load. For example, it evaluates the body’s offsetHeight to force a synchronous reflow, which causes the browser to request any lazily loaded images or fonts that might otherwise be missed. Here’s an example which verifies a file example.html from the working directory: from chives.browser_fixtures import assert_page_is_self_contained, file_uri from contextlib import closing from playwright.sync_api import sync_playwright with ( sync_playwright() as p, closing(p.webkit.launch()) as browser, ): assert_page_is_self_contained(browser, url=file_uri("example.html")) I originally passed a Page as the first argument, but changing the function to take a Browser or BrowserContext lets it manage its own pages. It gets a fresh page for every verification, and closes it when it’s done. (The first time I ran this, I created a new page for every verification, and never closed them – my computer ground to a crawl as my script opened hundreds of browser tabs.) If you create a new context, you can emulate different browser settings, like location, locale, and window size. Here’s an example where we use contexts to test the same page in light/dark mode: with ( sync_playwright() as p, closing(p.webkit.launch()) as browser, ): with closing(browser.new_context(color_scheme="light")) as light_ctx: assert_page_is_self_contained(light_ctx, url=file_uri("example.html")) with closing(browser.new_context(color_scheme="dark")) as dark_ctx: assert_page_is_self_contained(dark_ctx, url=file_uri("example.html")) In my web archive, I check every page in light/dark mode, and at 1×/2× pixel densities. It takes at least a second to run each verification, so I cache the results. As I save new pages, they’re added to a verification queue, and I’m warned of any missing assets. Unsurprisingly, the first run flagged many missing fonts and images, which I added to my local archive. Every saved page now passes cleanly. Browser is best-effort, but may still miss things Even with automated testing, it’s difficult to guarantee a completely self-contained archive. Different instances of a browser might load different assets, and a single page load might miss different variations: Responsive images – web pages can offer different sizes of an image, and the browser chooses a specific size based on the current window dimensions Appearance settings – a browser might load different fonts or images depending on light/dark mode Interaction-dependent assets – a web page might have assets that are only required on hover or user action You can mitigate some of this by testing with multiple contexts or adding post-load interactions, but every step makes the process take longer. Fortunately, most of the pages I save are simple, blog-style pages where I’ve stripped out the JavaScript. For my specific use case, initial load verification is more than good enough. Other uses for this code There are other projects where it could be useful to intercept and audit the requests made by a web page: Verifying your Content Security Policy (CSP). The CSP header restricts what resources can be loaded by a web page, and you could check that your configuration has the correct effect. Auditing login screens. You could check that sensitive pages don’t load any external scripts, which mitigates the risk of credential theft via a compromised third-party. Testing analytics and tracking. You could script user flows, like a shopping cart checkout, and confirm that tracking events fire correctly. I don’t do much front-end web development, but Playwright has become a key tool in my toolbox. I read a lot about people using AI agents and MCPs to interact with websites, but I prefer Playwright. It’s more fiddly and requires explicit instructions, but it’s constrained, deterministic, and I never have to worry about it doing something unexpected. [If the formatting of this post looks odd in your feed reader, visit the original article]

9 hours ago • 1 votes
Print Sales, Costs, And Profit: 2026

It’s four years since I bought a printer. I thought I would provide an update on running costs, print sales, and profit. I’m happy to be completely transparent about all this as I know it can be difficult to figure this out if you are thinking of creating your own printing business. January 11th 2026, 11:30am All the photos here are work shot in the last twelve months. Year Four Investment? Nothing other than consumables this year. I did purchase a high-spec film scanner last year, detailed here, but don’t consider that as part of this. The scanner has paid for itself several times over, and it may become a factor in future years (see below). Income Income is made up of sales through a local gallery that I am part of, along with web sales: 5,940.- CHF - sales through the gallery 80.- CHF - sales through web shop = 6,020.- CHF total income Total income is down about 50% compared to 2025. Costs I had to purchase consumables (paper and ink), at a total of 957.- CHF. That cost is included in the total here under the “print consumables” category. January 11th 2026, 3:30pm Rental cost of space in the gallery was reduced due to having overpayments of rent and my loan to the gallery, from the previous year(s), paid back to me. -1,500.- CHF - rental cost of space in the gallery -957.- CHF - print consumables (paper, ink) -1,138.- CHF - framing/mounting/postage -1,135.- CHF - commission to the gallery -300.- CHF - web shop subscription 0.- CHF - stripe / paypal fees 0.- CHF - advertising (none this year) = -5,030.- CHF total costs Total costs are down by about 60% compared to 2025. Total Profit 6,020.- CHF total income -5,030.- CHF total costs = 990.- CHF total profit A Quiet Year? Actually an average year. The previous couple of years were outliers, due to large orders, so really I’m back to normal in terms of sales. The key factors in managing to generate a [small] profit this year were: 1) no longer having to pay back the loan used to finance the printer, and 2) reduced rental cost of space in the gallery due to a previous loan to it being repaid. Also having to spend almost 1,000.- CHF on ink this year ate into profit. This is probably a “once every three years” cost given the rate I print at. The principal cost is rental of space in the gallery - in a normal year this would be 3,000.- CHF. Essentially this means, given the material cost of printing and framing/mounting and commission to the gallery, I need to make about 5,500.- CHF of sales to break even. Solar Eclipse, August 12th 2026 That’s a grind. However I did receive two substantial orders at the end of October, which haven’t made it in to this year’s figures and should boost next year’s. Maybe even a good sign for the year to come? At least now the original investment loan is repaid, the printing costs cover themselves in most years. I may look at offering scanning services now that I have a high-spec film scanner, which could become a scan + print service. More thoughts about that next time.

23 hours ago • 1 votes
F1

George Russell driving down the main straight during FP2.

23 hours ago • 1 votes
📚 BoredReading

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