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Articles 161,071Blog Posts 155,570Tech Tutorials 42,485Research Papers 31,730News 21,029
⚡ AI Lessons
Dev.to · Peter Hallander
4d ago
I measured 7,032 WordPress plugins to find out how anyone gets their first install
I shipped a plugin to the WordPress.org directory. It got zero installs. That is not a complaint, it...
Dev.to · Peter Hallander
5d ago
Integrating with Poland's KSeF: five things that aren't in the docs
Poland's e-invoicing system is mandatory now. Five things I got wrong shipping a production integration against it, including one that cost three weeks and turn
Dev.to · Peter Hallander
5d ago
What Google did with a brand new site in its first 24 hours
We recorded what Google reported about every page of a brand new site with zero backlinks, on two consecutive mornings. Thirteen of sixteen were indexed by day
Dev.to · Peter Hallander
🌐 Frontend Engineering
⚡ AI Lesson
3w ago
Splitting Polish statutory interest across central bank rate changes
Late-payment interest in Poland is not one rate times one period. The rate changes mid-delay, and two different legal regimes change on different schedules. Her
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3w ago
Poland's e-invoicing system has no JavaScript SDK, so I published the validation layer
The Polish Ministry of Finance ships KSeF SDKs for Java and .NET only. Here is a zero-dependency TypeScript package for the checks worth running before you ever
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
I added a "Featured in" logo row to my Shopify store. Cold-traffic CR went up 18% in 6 weeks.
I run a small DTC brand on Shopify. For most of last year, cold paid traffic sat at a 1.6% conversion...
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Building related-post recommendations for a Shopify blog — the algorithm, not the app
Shopify has no native related-blog-post engine. Here's how I built one with tag Jaccard, author signal, and the Section Rendering API.
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Per-country free shipping thresholds in Shopify — Markets API + Theme App Extensions
How I built a free shipping progress bar that uses Shopify Markets to switch the threshold per country, on a Theme App Extension.
Dev.to · Peter Hallander
🖌️ UI/UX Design
⚡ AI Lesson
3mo ago
What Shopify merchants get wrong about Core Web Vitals — and what's actually worth fixing
A senior dev's take on LCP, CLS, INP on Shopify stores — the gotchas, the fixes that move the needle, and a prefetch tactic that buys real navigation speed.
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Embedding a WordPress blog inside Shopify: 3 approaches I've actually shipped
Embedding a WordPress blog inside Shopify: 3 approaches I've actually shipped If you've...
Dev.to · Peter Hallander
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Embedding a WordPress blog inside Shopify: 3 approaches I've actually shipped
Embedding a WordPress blog inside Shopify: 3 approaches I've actually shipped If you've...
Dev.to · Peter Hallander
🌐 Frontend Engineering
⚡ AI Lesson
4mo ago
I built a Shopify app that makes stores feel instant using link prefetching
I've been building small Shopify apps as side projects for a while, and one thing that's always...
DeepCamp AI