01
Learn
Understand the production reason and the tradeoff behind the pattern.
2–4 minPractical field notes
Pro tips for builders who ship.
Focused lessons for the stacks developers use every day — each with a production reason, a copy-ready example, and notes for the platforms you actually deploy on.
Stacks
7
Field notes
80
Depth
Beginner to advanced
Featured in Performance8 notes in this stack
Reduce LCP with image optimization
Reduce LCP with image optimization by resizing, converting, and compressing images before they reach production.
Performance snippet
# Example target for a website herosource: hero-export.pngresize: 1920px wideconvert: WebPquality: 78-84result: 1.2MB -> 156KBBeginner · 6 linesRead the full note
Performance field notes
Choose the idea you can use today.
Reduce LCP with image optimization, tune bundles, manage assets, and measure speed wins. Each note includes production context, copy-ready examples, and platform-specific advice.
01
BeginnerReduce LCP with image optimization
Reduce LCP with image optimization by resizing, converting, and compressing images before they reach production.
02
IntermediatePreload only the critical asset
Preload the hero image or primary font, but avoid turning preload into another bottleneck.
03
AdvancedMeasure route-level bundles
Find heavy dependencies imported into shared layout code before chasing tiny wins.
04
BeginnerReserve media dimensions
Use width, height, or aspect-ratio so images and embeds do not create layout shifts.
05
BeginnerLazy-load below-fold media
Load non-critical images and embeds only when users are likely to see them.
06
AdvancedReduce third-party scripts
Audit tags, widgets, and trackers because third-party JavaScript often dominates real-user slowness.
07
IntermediateCache static assets long
Use hashed filenames and long cache headers so repeat visits avoid downloading unchanged assets.
08
IntermediateMeasure real-user vitals
Use field data to catch slow devices, network conditions, and pages lab tests miss.
A repeatable workflow
From useful idea to better production code.
Every field note follows the same short path, so you can understand it, use it, and verify the result without reading a long tutorial.
02
Apply
Copy the focused example, adapt the values, and use it in your stack.
Copy-ready03
Improve
Check the real result, keep what works, and move to the next bottleneck.
Measure it