随时间变化的速度评分
随时间变化的速度评分部分会显示您的速度评分在所选日期范围内的变化情况。该部分包含一个图表和一个表格，图表用于跟踪您在一段时间内的评分，而表格则列出历史评分和应用安装或卸载事件。
图表包含事件标记，这些标记表示正在安装或卸载的应用。这些事件可能会影响您的速度评分，也可能不会对其产生影响。您可以通过点击活动标记来查看已安装或已卸载应用的列表。
利用此部分，您可以识别与应用相关的事件（这些事件会对您的评分产生正面或负面影响），并对其进行调查。例如，如果您在安装应用后评分下降，则应考虑评估应用，以确定应用引入的功能是否超过了对商店速度的影响。
加载在线商店速度报告时，图表会显示过去 7 天的评分。您可以使用日期范围选择器更改日期范围。评分将在上午 9:00 UTC 重新计算。如果您错过了报告中的最新评分，则应在当天晚些时候再次查看。
您可能不会每天都有速度评分。缺少的速度评分在速度评分图表中以空白的形式显示，表格中的评分也留空 (—)。了解阻止速度报告运行的因素。
Shopify 测试环境
您的在线商店速度报告中的评分可能与使用 PageSpeed Insights 或 Chrome DevTools 计算的评分不同。这是因为运行 Lighthouse 报告的环境会影响报告结果，并且所有平台上的评分仅代表测量时商店的速度。
在 Shopify 测试环境中运行的 Lighthouse 报告不会因 Internet 连接速度、设备处理能力、浏览器扩展或防病毒软件等因素而产生波动。这是因为所有用于速度评分的 Lighthouse 性能报告都使用相同的 Shopify 环境运行，因此我们可以准确地将您的评分与 Shopify 平台上其他在线商店的评分进行比较。
其他因素可能会导致您的评分每天都发生变化。
常见问题解答
为什么我没有评分或排名？
以下列出了一些可能导致您没有评分或排名的原因：
您的商店受密码保护
如果您的在线商店受密码保护，则 Lighthouse 无法访问它以运行报告。您需要先删除密码页面，然后 Lighthouse 才可收集用于生成评分和排名的数据。
如果您想了解商店的速度，并且不想删除密码页面，则可以使用 Chrome DevTools 手动运行 Lighthouse 报告。
备注：在线商店速度报告中的评分可能与使用 Chrome DevTools 计算的评分不同。这是因为运行 Lighthouse 报告的环境会影响报告结果。详细了解 Shopify 测试环境。
您的商店是新商店或刚刚删除了密码
您可能还没有任何页面浏览量，或者可能尚未计算您的商店评分或排名。
若要允许 Lighthouse 评估您的页面，您可以访问商店的页面，以便产生浏览量。Shopify 下一次尝试计算您的商店评分时，您所访问的页面就可以被纳入到统计报告之中。此过程可能需要几天时间。若要立即获取有关商店速度的信息，您可以在 Google PageSpeed Insights 上运行 Lighthouse 报告。
您的商店在过去 7 天内没有流量
在过去 7 天内，您的主页、产品系列页面或产品页面可能没有任何页面浏览量。
若要允许 Lighthouse 评估您的页面，您可以访问商店的页面，以便产生浏览量。Shopify 下一次尝试计算您的商店评分时，您所访问的页面就可以被纳入到统计报告之中。此过程可能需要几天时间。若要立即获取有关商店速度的信息，您可以在 Google PageSpeed Insights 上运行 Lighthouse 报告。
为什么我的一个评分发生了变化？
即使您没有对自己的在线商店进行任何更改，您的评分也可能每天都会发生变化。评分可能会因为以下因素而发生变化：
其他商店的相对评分。如果其他商店的评分提高，那么您的评分的比较排名可能会降低。
其他可变因素。
当您对在线商店进行更改时，您的评分也会发生变化。例如，您可能已导入了多个新产品、创建了多个新产品系列、更改了模板或引入了新的应用。了解可能会影响在线商店速度的因素。
对在线商店进行更改后，您的评分可能会在几天之内保持不变。
如何提高评分或排名？
若要了解如何提高您的速度评分或排名，您需要提高商店速度。有关建议，请参阅提高商店速度。
为什么这些评分使用 Google Lighthouse？
Google 已完成相关研究并构建了用于衡量 Web 性能的实用工具。许多商家已经在使用他们的工具来衡量自己的在线商店速度。
此外，Google 的 Web 性能标准还会影响您的搜索排名，进而影响您在线商店的可发现性。
在线商店速度报告基于 Google 关于 Shopify 商店和技术的研究和工具。将 Google Lighthouse 的评分作为背景信息可以帮助您有意义地提高在线商店的速度并改善客户体验。
Shopify商户官网原文详情：
Speed score over time
The Speed score over time section shows you how your speed score has changed over the selected date range. The section includes a chart that tracks your score over time and a table that lists your historical scores and app install or uninstall events.
The chart includes event markers, which represent an app being installed or uninstalled. These events might or might not impact your speed score. You can view a list of the apps that were installed or uninstalled by clicking on the event marker.
Using this section, you can identify app-related events that positively or negatively impacted your score and investigate them. For example, if your score declines after you install an app, then you should consider evaluating the app to decide whether the features the app introduces outweigh the impact to the speed of your store.
When the Online store speed report loads, the chart shows the last 7 days of scores. You can alter the date range using the Date range picker. Scores are recalculated at 9:00 am UTC. If you are missing the most recent score in your report, then you should check again later in the day.
You might not have a speed score for every day. Missing speed scores appear as gaps in the speed score chart and as an empty score (
—) in the table. Learn about the factors that prevent the speed report from running.The Shopify test environment
Scores in your online store speed report might be different than scores you calculate using PageSpeed Insights, or Chrome DevTools. This is because the environment where the Lighthouse report is run impacts the report results, and because scores on all platforms only represent a point-in-time measurement of your store's speed.
Lighthouse reports run on the Shopify test environment do not fluctuate based on common factors like internet connection speed, device processing power, browser extensions, or antivirus software. Because all Lighthouse performance reports used for speed scores are run using the same Shopify environment, we can accurately compare your score to that of other online stores on the Shopify platform.
Other factors might cause your score to change from day to day.
Frequently asked questions
Why don't I have a score or ranking?
Below are some reasons why you might not have a score or ranking:
Your store is password-protected
If your online store is password-protected, then Lighthouse cannot access it to run a report. You need to remove the password page before Lighthouse can gather the data used to generate your score and ranking.
If you want to learn about your store's speed and don't want to remove the password page, then you can run a Lighthouse report manually using Chrome DevTools.
Your store is new or you just removed the password
You might not have had any page views yet, or your store score or ranking might not have been calculated yet.
To allow Lighthouse to evaluate your pages, you can visit your store's pages so you have views. The next time Shopify tries to calculate your store score, the pages that you visit can be used in the report. This process might take a few days. To get information about your store's speed right away, you can run a Lighthouse report on Google PageSpeed Insights.
Your store has not had traffic in the last 7 days
You might not have had any page views to your home page, a collection page, or a product page in the last 7 days.
To allow Lighthouse to evaluate your pages, you can visit your store's pages so you have views. The next time Shopify tries to calculate your store score, the pages that you visit can be used in the report. This process might take a few days. To get information about your store's speed right away, you can run a Lighthouse report on Google PageSpeed Insights.
Why did one of my scores change?
Your scores might change from day to day, even if you didn't make any changes to your online store. Scores can change because of the following factors:
The relative scores of other stores. If another store made improvements to their score, then your score might be ranked lower in comparison.
Other variability factors.
Your scores can also change when you make changes to your online store. For example, you might have imported several new products, created several new collections, changed your theme, or introduced a new app. Learn about the factors that can impact your online store speed.
Your score might not change for a few days after you make changes to your online store.
How can I improve my score or ranking?
To learn how to improve your speed score or ranking, you need to improve your store speed. Refer to Improving your store speed for suggestions.
Why do these scores use Google Lighthouse?
Google has done research and built useful tools to measure performance on the web. Many merchants already use their tools to measure their online store speed.
In addition, Google's web performance standards impact your search rankings, which can impact the discoverability of your online store.
The online store speed report builds on Google's research and tooling with context about Shopify stores and technology. Putting Google Lighthouse's scores in context can help you to meaningfully improve your online store speed and improve your customers' experience.
文章内容来源：Shopify商户官方网站
