Sleeken Insights — Journal https://www.sleeken.se/insights/journal Notes from Shopify engineering work for Swedish DTC brands — performance, app cost and storefront architecture. en A 90 mobile score is not the goal, and chasing it will cost you sales https://www.sleeken.se/insights/journal/a-90-mobile-score-is-not-the-goal https://www.sleeken.se/insights/journal/a-90-mobile-score-is-not-the-goal Wed, 29 Jul 2026 08:00:00 GMT For a live store running the apps your business depends on, 55–75 with passing Core Web Vitals is the honest target. Here is what we optimise instead. Image strategy for Shopify: a decision tree https://www.sleeken.se/insights/journal/image-strategy-decision-tree https://www.sleeken.se/insights/journal/image-strategy-decision-tree Fri, 24 Jul 2026 08:00:00 GMT When to let the CDN transform, when to pre-process, and the two breakpoints that do most of the work. Your app bill is a code decision, not a subscription https://www.sleeken.se/insights/journal/your-app-bill-is-a-code-decision https://www.sleeken.se/insights/journal/your-app-bill-is-a-code-decision Fri, 24 Jul 2026 08:00:00 GMT SEK 3 000 a month is SEK 108 000 over three years — mostly features OS 2.0 already gives you, if someone builds them. Auditing a theme you did not build https://www.sleeken.se/insights/journal/auditing-a-theme-you-did-not-build https://www.sleeken.se/insights/journal/auditing-a-theme-you-did-not-build Sat, 18 Jul 2026 08:00:00 GMT Reading somebody else’s Liquid in an afternoon without breaking the store. Which of your apps has a native equivalent https://www.sleeken.se/insights/journal/apps-with-a-native-equivalent https://www.sleeken.se/insights/journal/apps-with-a-native-equivalent Wed, 15 Jul 2026 08:00:00 GMT Common paid apps, the OS 2.0 feature that replaces them, and the three worth keeping. Why your Core Web Vitals take four weeks to move https://www.sleeken.se/insights/journal/why-core-web-vitals-take-four-weeks https://www.sleeken.se/insights/journal/why-core-web-vitals-take-four-weeks Sat, 11 Jul 2026 08:00:00 GMT Field data is a rolling 28-day window. Ship the fix, then wait — and stop judging a rebuild by launch week. What to do in the first week of a slow store https://www.sleeken.se/insights/journal/first-week-of-a-slow-store https://www.sleeken.se/insights/journal/first-week-of-a-slow-store Thu, 09 Jul 2026 08:00:00 GMT The order of operations, so you are not optimising the wrong thing for a fortnight. The five app scripts we remove from every store we touch https://www.sleeken.se/insights/journal/the-five-app-scripts-we-remove https://www.sleeken.se/insights/journal/the-five-app-scripts-we-remove Sat, 04 Jul 2026 08:00:00 GMT Not because the apps are bad, but because nobody on the team can point to the feature in the storefront. Reading an app’s network waterfall https://www.sleeken.se/insights/journal/reading-an-apps-network-waterfall https://www.sleeken.se/insights/journal/reading-an-apps-network-waterfall Thu, 02 Jul 2026 08:00:00 GMT How to tell whether an app is expensive before you install it. What a fixed-scope quote actually contains https://www.sleeken.se/insights/journal/what-a-fixed-scope-quote-contains https://www.sleeken.se/insights/journal/what-a-fixed-scope-quote-contains Sun, 28 Jun 2026 08:00:00 GMT Every line we put in a quote, and why we do not bill by the hour. B2B on Shopify: what it does and does not do https://www.sleeken.se/insights/journal/b2b-on-shopify https://www.sleeken.se/insights/journal/b2b-on-shopify Wed, 24 Jun 2026 08:00:00 GMT Company accounts, price lists, payment terms — and the four things you will still have to build. Migrating a wholesale price list https://www.sleeken.se/insights/journal/migrating-a-wholesale-price-list https://www.sleeken.se/insights/journal/migrating-a-wholesale-price-list Fri, 12 Jun 2026 08:00:00 GMT Getting twenty years of customer-specific pricing into catalogs without a spreadsheet massacre.