Before launch, check the page at three widths, test every link and form, confirm the title, description and social image, run an accessibility scan, and measure load speed on a mid-range phone. Most launch-day bugs come from the 375px view and broken links.
Key takeaways
Check three widths: 375px, 768px and 1440px.
Click every link and submit every form once.
Confirm title, description and the social card preview.
Measure on a mid-range phone, not your laptop.
Every launch we have regretted had the same cause: something nobody checked because everyone assumed someone else had. So we wrote it down. This is the list, in the order we run it.
