This rule triggers when detecting that your page does not specify a viewport, or specifies a viewport rahapelit does not adapt to different devices. If the width of your app’s content doesn’t match the width of the viewport, your app might not be optimized for mobile screens. This rule triggers when detecting that text in the page is too small to be legible. Low-contrast text is difficult or impossible for many users to read.

Background and foreground colors should have a sufficient enough contrast ratio to guarantee readability. Fix any of the following: Element has insufficient color contrast of 2. Fix any of the following: Element has insufficient color contrast of 1. Fix any of the following: Element has insufficient color contrast of 3. Fix any of the following: Element has insufficient color contrast of 4.

This usually happens after all of the image content has loaded but may not include content that is triggered by javascript execution. This will usually include any activity that is triggered by javascript after the main page loads. A fast page load over a 3G network ensures a good mobile user experience. The time from the initial request to the first byte of the response. First meaningful paint measures when the primary content of a page is visible.

It’s essentially the paint after which the biggest above-the-fold layout change has happened, and web fonts have loaded. The score above is an estimate of how long your app takes to respond to user input, in milliseconds. Keep-Alive measures the effectiveness of connection reuse. The purpose of this grade is to evaluate the extent to which requests are inefficiently reopening connections. The point at which most network resources have finished loading and the CPU is idle for a prolonged period. Consistently Interactive requires a minimum of 5 seconds of both main thread idle and network idle. In other words, the point where the page is complete and will respond quickly to user input.

This rule triggers when detecting that compressible resources were served without gzip compression. Main benefit of this is that the round-trip time is faster. Number of elements in the document. The image compression check just looks at photo images and makes sure the quality isn’t set too high. Images can usually be compressed pretty substantially without any noticeable reduction in visual quality. A progressive JPEG is image created using the JPEG suite of compression algorithms that will ‘fade in’ in successive waves of lines until the entire image has completely arrived. They show the entire image right away, looking slightly pixelated until the image data is fully loaded.

Serve images that are appropriately-sized to save cellular data and improve load time. Consider lazy-loading offscreen images to improve page load speed and time to interactive. Your page has 21 blocking script resources. This causes a delay in rendering your page. This rule triggers when detecting that additional network round trips are required to render the above-the-fold content of the page. Additional ingredients in alcoholic beverages It is often claimed that different types of alcoholic beverages cause different kinds of intoxication, hangover or some other effect.

Almost as often we are told that these differences are due to the hundreds of additional ingredients in alcoholic beverages. What are the symptoms of pancreatitis? What are the symptoms of cirrhosis of the liver? Can you drink alcohol if you use antidepressants? Does ecstasy permanently damage the brain? What are the risks of combined use of ecstasy and antidepressants? What are the first symptoms of hepatitis C?

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