From Slow to Fast: My WooCommerce Performance Checklist (CWV + TTFB + Caching) published: true

I work on real-world WooCommerce performance (Core Web Vitals, TTFB, caching rules, production reliability).

Here’s the checklist I use when a store feels “slow” (front-end or wp-admin).

1) Measure the right things (first)

• TTFB (server response): if it’s high, CWV will be hard to fix
• LCP / INP / CLS (Core Web Vitals)
• Check mobile and real pages (home, category, product, cart/checkout)

2) Common WooCommerce killers

• Too many uncached requests (cart fragments, dynamic blocks, logged-in behavior)
• Heavy plugins doing work on every request
• Slow database queries / autoload bloat
• Bad caching rules (cached cart/checkout, cookies ignored)

3) My “safe caching” baseline

• Cache everything except:
  • /cart/ /checkout/ /my-account/
  • logged-in users
  • requests with WooCommerce session/cart cookies
• Use a CDN + edge caching, but keep WooCommerce rules strict

4) wp-admin is slow? (usually)

• Overloaded plugins / cron / heartbeat
• Too many admin-ajax calls
• Object cache missing or misconfigured

5) Quick wins that actually move the needle

• Remove unused scripts/styles on product/checkout pages
• Optimize images + preload the correct hero
• Fix render-blocking CSS (critical CSS / split)
• Reduce 3rd-party scripts

If you want, I’m documenting more real fixes here:

• Website: carlleger.github.io
• Services: Performance services
• WooCommerce Optimization: Dedicated WooCommerce performance page

Happy to answer WooCommerce performance questions in the comments.