| Inline CSS for faster first render (inlineCss) | The page has both inline CSS and CSS requests even though it uses a HTTP/2-ish connection. If you have many users on slow connections, it can be better to only inline the CSS. Run your own tests and check the waterfall graph to see what happens. | 95 |
| Description: In the early days of the Internet, inlining CSS was one of the ugliest things you can do. That has changed if you want your page to start rendering fast for your user. Always inline the critical CSS when you use HTTP/1 and HTTP/2 (avoid doing CSS requests that block rendering) and lazy load and cache the rest of the CSS. It is a little more complicated when using HTTP/2. Does your server support HTTP push? Then maybe that can help. Do you have a lot of users on a slow connection and are serving large chunks of HTML? Then it could be better to use the inline technique, becasue some servers always prioritize HTML content over CSS so the user needs to download the HTML first, before the CSS is downloaded. |
| Avoid CPU Long Tasks (longTasks) | The page has 15 CPU long tasks with the total of 1549 ms. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. Use Geckoprofiler for Firefox or Chromes tracelog to debug your Long Task. | 0 |
| Description: Long CPU tasks locks the thread. To the user this is commonly visible as a "locked up" page where the browser is unable to respond to user input; this is a major source of bad user experience on the web today. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. |
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| Avoid extra requests by setting cache headers (cacheHeaders) | The page has 78 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 693.5 kB the next access. | 0 |
| Description: The easiest way to make your page fast is to avoid doing requests to the server. Setting a cache header on your server response will tell the browser that it doesn't need to download the asset again during the configured cache time! Always try to set a cache time if the content doesn't change for every request. |
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| Long cache headers is good (cacheHeadersLong) | The page has 3 requests that have a shorter cache time than 30 days (but still a cache time). | 97 |
| Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version. |
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| Total image size shouldn't be too big (imageSize) | The page total image size is 703.5 kB. It's really big. Is the page using the right format for the images? Are they compressed as good as they can be? Make them smaller by using https://imageoptim.com/. | 50 |
| Description: Avoid having too many large images on the page. The images will not affect the first paint of the page, but it will eat bandwidth for the user. |
| Total JavaScript size shouldn't be too big (javascriptSize) | The total JavaScript transfer size is 231.2 kB and the uncompressed size is 807.9 kB. This is quite large. | 0 |
| Description: A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks? |
| Don't use private headers on static content (privateAssets) | The page has 2 requests with private headers. The main page has a private header. It could be right in some cases where the user can be logged in and served specific content. But if your asset is static it should never be private. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone. | 90 |
| Description: If you set private headers on content, that means that the content are specific for that user. Static content should be able to be cached and used by everyone. Avoid setting the cache header to private. |
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0 s
0.5 sFirst Visual Change 467 msFirst Contentful Paint 469 msLCP <P> 469 ms
0.6 sVisual Complete 85% 600 ms
0.7 smwStartup 623 ms
2.1 sCPU Long Task duration 119 msVisual Complete 95% 2.100 sVisual Complete 99% 2.100 s
2.3 sDOM Content Loaded Time 2.213 sLast Visual Change 2.233 sPage Load Time 2.235 sCPU Long Task duration 233 ms
