Guides
What actually happens between keypress and pixel
Five stages, one honest read on your rendering pipeline. Here is what each stage costs, what usually stalls it, and the single change that moves your numbers.
Tag
testing
Measuring the thing you changed, on hardware your readers actually own.
15 posts1 authorLast post 2 days ago
Guides
A migration checklist for teams that cannot stop shipping
Every migration that failed was attempted in one branch. Here is the shape of the ones that landed.
Guides
Reading your own analytics before you optimise anything
Half the performance work teams do is aimed at a device nobody in their audience owns.
Guides
How to run a performance review that changes something
A meeting where everyone agrees the site is slow is not a review. It is a shared feeling.
Ask a dev
Five accessibility bugs worth a ticket today
Most audit findings are noise you can schedule. These five are not, and fixing them now saves the retrofit every team postpones for a quarter.
Performance
Onboarding juniors: what actually helps
A first pull request stalls on setup, not on skill. Pair for a week, ship something small on day two, and finally write the README you keep meaning to.
Guides
Your build has a budget. Here is how to set it
One number in CI does more for performance than any audit you run by hand. A two-week plan for teams whose scope keeps moving.
Deep dives
Reading a flame graph like a profiler would
Width is time and depth is the call stack. Once those two facts land, most of a trace reads itself.