Engineering

Posts by the NEXUPIRA engineering team, newest first: what we changed, what we measured and the code that runs today. For product news, plans and announcements, see all news.

Engineering posts

EngineeringOct 25, 2026 How we took our Chinese and Japanese pages from 77 to 100 on mobile Lighthouse Our /ja page scored 77 on mobile Lighthouse with a CLS of 0.179, and /zh took 3.84 s to paint its headline. The biggest culprit was not the CJK fonts but a locale store that answered "en" before the page data arrived. What we changed, what we measured, and the obvious fix we measured and threw away.

• EngineeringOct 25, 2026 How we generated 300 template pages without making doorway pages Our site has a quote template for 100 trades in English, Chinese and Japanese: 300 pages and 600 Excel and Word files, all generated from one typed data set. How we kept them from being thin near-duplicates, how we measured that, why the page JavaScript fell from 221 KB to 123 KB gzip, and the iPhone preview that showed blank amounts in our spreadsheets. 12 min read →