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Mark Evans

@onlyrss.org
23 followers 23 following 47 posts

Principal Product Manager, ex-scientist, blogger, data-viz & typography nerd, hobby developer, and general tech enthusiast.

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Mark Evans @onlyrss.org · 12/03/2026
5am start to get to Brighton by 9am for #WebDayOut. Not sure if using my mini eReader as a name badge is cool or sad🤔
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Mark Evans @onlyrss.org · 02/03/2026
Gave a GitHub, GitHub Copilot, VSCode demo to fellow Product Managers recently, wanted to cover Markdown files, so needed to cover the concept of Markup, I might have gone a little too deep.
Handwritten title ‘Early Markup’ above a photo of an ancient Egyptian wall relief showing painted hieroglyphs, birds, and symbolic figures in muted reds, greens, and golds. Some hieroglyphs are contained within a cartouche.
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Mark Evans @onlyrss.org · 27/12/2025
I now have a drone (my first), so all my future photos will probably be some variation on this one (which was taken over Church Lench, Evesham, UK)
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Mark Evans @onlyrss.org · 23/12/2025
Apparently, the new Trump-class warship will use an AI based on Trump’s own personality. There’s only one possible problem…
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Mark Evans @onlyrss.org · 22/11/2025
AI (Gemini) created (from a photo realistic image) Starfury from Babylon 5.
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Mark Evans @onlyrss.org · 26/10/2025
@deceptive.design Here's one for your "catalogue of deception/manipulation manual" etc. This is from a hotel check-in process. The marketing opt-out is hidden behind a "click here" link. And there was me believing that links were meant for navigation 🤔.
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Mark Evans @onlyrss.org · 11/10/2025
What can you do with an AI browser? onlyrss.org/posts/ai-bro...
onlyrss.org
What can you do with an AI browser?
I've been using an AI browser for a few days, so thought I'd share some examples of what you can do with it. I've tried to think of tasks that I often find myself doing when online, that I find tediou...
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Mark Evans @onlyrss.org · 06/10/2025
Photo editing using Gemini onlyrss.org/posts/nano-b...
onlyrss.org
Photo editing using Gemini
Examples of photo editing using the new Nano Banana model that's part of Google Gemini.
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Mark Evans @onlyrss.org · 27/07/2025
The enshittification of UK supermarkets onlyrss.org/posts/the-en...
onlyrss.org
The enshittification of UK supermarkets
UK supermarkets have transformed simple shopping into a data-harvesting nightmare. What was once as easy as picking up an item and paying has become a multi-tiered pricing system requiring apps, weekl...
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Mark Evans @onlyrss.org · 02/05/2025
As an "older" brit, I remember when it was cheaper to buy my gadgets from the US… the DJI Osmo Pocket 3 is £489 ($650) in the UK. In the US, prior to April it was $519, it's now $799. Americans are soon to be one of the most heavily taxed peoples on the planet.
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Mark Evans @onlyrss.org · 25/04/2025
Vibe-coded myself a "when should I go for my bike ride?" app. Written in Python, uses a weather API (visualcrossing), Google Gemini AI, and #Datawrapper (for charts). Only useful for people who live near my village though! onlyrss.org/apps/when-bi...
onlyrss.org
When Bike? - Burghfield
A page designed to let cyclists (or walkers) who live in Burghfield, know the best times to go for a bike ride (or walk). It does this for 1, 2, 3, 4, and 5-hour slots.
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Mark Evans @onlyrss.org · 14/04/2025
My TRMNL eink thing arrived!
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Mark Evans @onlyrss.org · 12/04/2025
There's a nice little feature on the PostPark screenshots/mockups tool, you can get a GitHub commit history by just entering a GitHub username. From the nav: Templates > GitHub Contributions. postspark.app/github-contr... Here's mine:
I screenshot of a GitHub commit history, showing 5 calendar heatmaps, one per year.
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Mark Evans @onlyrss.org · 11/04/2025
AI-assisted coding is the electric-assisted cycling of software development onlyrss.org/posts/vibe-c...
onlyrss.org
AI-assisted coding is the electric-assisted cycling of software development
My premise here is that electric bikes don't just make cycling easier for existing cyclists—for many people they make cycling possible. I see many parallels with AI-assisted software development i.e.,...
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Mark Evans @onlyrss.org · 10/04/2025
Trump shocked to discover that China knows about big numbers as well. But all is well, Trump has now found out about numbers biggerer than 100, so now there's nothing the Chinese can do, Trump confident that the Chinese don't also know about numbers biggerer than 125.
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Mark Evans @onlyrss.org · 06/04/2025
Same news, different views: The BBC's design at home and abroad onlyrss.org/posts/same-n...
onlyrss.org
Same news, different views: The BBC design at home and abroad
Around a year ago I noticed that the BBC news site had updated their article style—and I really liked the new look. But, I then realised that I had my VPN on and was actually seeing the site as viewed...
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Mark Evans @onlyrss.org · 23/03/2025
My shower-thought for today
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Mark Evans @onlyrss.org · 17/03/2025
Note: This is a long blog post (13m read). "Why Product Managers need to embrace the tech" onlyrss.org/posts/why-pr...
onlyrss.org
Why Product Managers need to embrace the tech
After 16 years as a Product Manager, I share my thoughts on why technical knowledge is highly beneficial for product managers.
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Mark Evans @onlyrss.org · 28/02/2025
@kevinpowell.co I just dumped some HTML & CSS into Claude and asked it to sketch and annotate the layout. It output the following SVG, which (as a CSS novice) I think is kinda useful. Not sure how well it would work with more complex layouts.
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Mark Evans @onlyrss.org · 19/02/2025
Trump says Ukraine should have "done a deal" with Russia. Exactly the sort of comment I would expect from someone who conveniently developed "bone spurs" which excluded him from Vietnam. Should Europe have done a deal with Nazi Germany?
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Mark Evans @onlyrss.org · 14/02/2025
These f#&king people. I swear to god, my irony meter just exploded.
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Mark Evans @onlyrss.org · 31/01/2025
Now this is something I can get behind. There's a lot of wisdom in Netflix's Castlevania.
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Mark Evans @onlyrss.org · 29/01/2025
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Mark Evans @onlyrss.org · 28/01/2025
In Chrome v133 (i.e. the next version) you can use `atrr()` in CSS to pass HTML attributes to CSS as values—not just strings. And then use them to define parameters such as lengths etc. In this example the bar lengths are in the HTML. No JavaScript was hurt during the creation of this bar chart 😆
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Mark Evans @onlyrss.org · 21/01/2025
Americans wanted lower inflation, looks like they'll have to settle for a US flag on Mars. Seems logical to me 🤔.
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Mark Evans @onlyrss.org · 11/01/2025
Phone fingerprint sensor not working 100% of the time? Here's my tip (that's probably already obvious to most people). In setting, add more "fingers", but use the same finger each time. I went from a 80-90% success rate, to 100%.
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Mark Evans @onlyrss.org · 07/01/2025
@chriscoyier.net Thanks for including the whole of your articles in your RSS feed, it's very much appreciated. The company I work for uses software that blocks access to many blogs—including yours. But, the RSS feed (via Feedly) works fine 😉
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Mark Evans @onlyrss.org · 03/01/2025
For fans of the Bobiverse series of books, book №5 (which has been available in audio form for a while) will be released in non-audio form on Jan 5th.
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Mark Evans @onlyrss.org · 24/12/2024
Learning log: 2024 onlyrss.org/posts/learni... My 3rd annual Learning Log. You're never too old 😀
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Learning log: 2024
My 2024 learning goals and resources. In this post I outline my learning goals for 2024 and list the resources I used.
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Mark Evans @onlyrss.org · 19/12/2024
I only recently started watching Amazon Prime's Secret Level, and today I got to episode 4. As a “person of a certain age”, let's just say it was awesome to see an episode based on Unreal Tournament! en.wikipedia.org/wiki/Secret_...
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Mark Evans @onlyrss.org · 18/12/2024
Costco have perfected the traditional UK Mince Pie. They replaced the pastry lid (which always cracked in the wrong place when biting down on it) with sponge. And have reduced the quantity of mince to about 5%. Oh… and it's also twice as big now :-)
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Mark Evans @onlyrss.org · 17/12/2024
Visualising my daily constitutionals (walks) onlyrss.org/posts/visual...
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Visualising my daily constitutionals (walks)
The result of my attempt to build a calendar heatmap from scratch with HTML, CSS, and JS. The heatmap visualises my daily walks in 2024.
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Mark Evans @onlyrss.org · 16/12/2024
I've been using HTML/CSS/JS to create a visualisation that shows a year's worth of my walks (from Strava) in a GitHub style timeline heatmap. Here's what I have so far:
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Mark Evans @onlyrss.org · 14/12/2024
Mostly walking!
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Mark Evans @onlyrss.org · 13/12/2024
I often end the day with about 50% charge remaining on my Pixel 6 Pro, so I've been waiting for the "Limit to 80%" feature to become available. I don't like having to buy a new phone when the only issue with the current phone is a degraded battery. Hopefully this will help.
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Mark Evans @onlyrss.org · 11/12/2024
The final episode of Arcane was beautiful & epic. That is all.
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Mark Evans @onlyrss.org · 11/12/2024
Modern CSS is awesome. Here's Logical Properties and Container Queries doing their thing (all inside a Web Component) codepen.io/dbssticky/pe...
codepen.io
Responsive news-list-item Web Component compatible with different writing directions
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Mark Evans @onlyrss.org · 11/12/2024
I'm trying to encourage people to take a daily walk by bringing back the old phrase "daily constitutional" (blog post coming soon), it's not going well.
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Mark Evans @onlyrss.org · 05/12/2024
I've created a "article share Web Component", it includes the option to open the native sharing menu (not on Firefox). Not ground breaking, but someone might find it useful. codepen.io/dbssticky/pe...
codepen.io
Article share Web Component
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