Visit jakearchibald.com → RSS feedOn Hacker News May 2014 – Oct 2026
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I accidentally discovered a huge browser bug a few months ago and I'm pretty excited about it. Security engineers always seem like the "cool kids" to me, so I'm hoping that now I can be part of the club, and y'know, get into the special parties or whatever.
They're completely different, but often coupled.
The 'how' and 'why' of CORS, from start to finish.
Don't do it like GitHub Copilot!
JPEG XL has landed, but how does it compare?
I was trying to make my predictions for the new Formula One season by studying the aerodynamics of the cars, their cornering speeds, their ability to run with different amounts of fuel. Then it hit me: I have no idea what I'm doing.
Deep-diving on the load performance of F1 websites.
iOS has hidden the pathname of URLs for some time now, but recently Chrome Canary introduced something similar behind a flag.
…same goes for option objects.
There's a proposal to add a new <h> element to the HTML spec . It solves a fairly common use-case. Take this HTML snippet:
When I told my colleague Matt Gaunt I was thinking of writing a piece on microtask queueing and execution within the browser's event loop, he said "I'll be honest with you Jake, I'm not going to read that". Well, I've written it anyway, so we're all going to sit here and enjoy it, ok?
It's better to do it yourself.
AVIF is the first browser image format we've had in 10 years. Let's see how it performs…
GC within a function doesn't work how I expected
The history, facts, and opinions.
A rough edge with promises that can sneak up on you.
Update: Together with Udacity I created a free offline-first interactive course . It involves taking an online-only site to full offline-first glory. Many of the patterns in this article are used.
There are lots of edge cases I hadn't considered, and it's very inconsistent between browsers. Here's what I found…
An edge case has convinced me it's the 'last' return that always wins…