# Storefront Speed Journal

Source: https://storefrontspeedjournal.com/

Storefront Speed Journal covers how fast online stores actually load, what speed is worth in conversion, and the engineering trade-offs behind every millisecond - with methods, not marketing.

## Latest

## [What One Second of Load Time Actually Costs an Ecommerce Store](https://storefrontspeedjournal.com/blog/what-one-second-costs.md)

The conversion cost of a slow storefront is real but routinely misquoted. Here is what the public research says, what it does not say, and how to compute your own number.

## [Core Web Vitals for Commerce Sites: What Good Looks Like Now](https://storefrontspeedjournal.com/blog/core-web-vitals-commerce-2026.md)

LCP, INP, and CLS thresholds have not moved, but the share of stores passing them keeps climbing. Where the bar sits, and which metric fails most on storefronts.

## Quick answers

* [What is a good page load time for an ecommerce site?](https://storefrontspeedjournal.com/answers/good-load-time-ecommerce.md)
* [Do third-party scripts really slow down ecommerce sites?](https://storefrontspeedjournal.com/answers/third-party-scripts-slow.md)
* [How much does site speed affect conversion rate?](https://storefrontspeedjournal.com/answers/speed-vs-conversion.md)
* [What is the difference between LCP and INP?](https://storefrontspeedjournal.com/answers/lcp-vs-inp.md)
* [Can you make a Shopify store faster without changing platforms?](https://storefrontspeedjournal.com/answers/shopify-speed-limit.md)