What resources are relevant to the analysis site speed and what items are not worth paying attention to?

Tried couple of resources, but they seemed to me very weak and nonsense write up. Who uses what? And the next question. There are very strange points for compression js and css files in gzip to trim 12 KB, does that make sense? Care what the sites are asked to reduce code bootstrap as css and js, whether to pay on this account or how to get around this point (I would like to raise their sites to the ball more than 85 out of 100. Customer not everything can be explained)? And optimizing images... and so I try to use the solution in the desired amount, and he offers me their 94 per cent shake that?
July 8th 19 at 16:13
3 answers
July 8th 19 at 16:15
https://gtmetrix.com/ + a built in browser monitor download page.

bootstrap.compete in your css file the whole framework, if you have on the page is used, for example, only grid, with the tochi optimizer the rest of the code superfluous, and for this page it is not needed.
The same goes for style.css and js . After completion, they should be beneficiality ( grunt or manually). This will also give the increase.

Image you can easily reap up to 75% quality JPG, if they do not represent artistic value, the difference is minimal.

gzip is a server's ability to respond to your request in the archive - will it make a noticeable effect - you need to try and watch
a question: if you have already compressed images anyway offers pinch, otherwise do not work 100%, but if they shrink even more, it will be clearly noticeable artifacts - what to do? - Carlee_Daugherty39 commented on July 8th 19 at 16:18
: draw vector and to svg XD - shane.Legros commented on July 8th 19 at 16:21
: this is advice, not an obligation .. so look at the quality polimernoe for you quality / size pictures
Here's another article about compression of the images (eng) - https://medium.com/@1000ch/we-should-optimize-imag... - tomas.Remp commented on July 8th 19 at 16:24
July 8th 19 at 16:17
July 8th 19 at 16:19
Image compression is not the resolution, and weight. This can be done in photoshop when you save for web, there is a slider for quality.
Compression in photoshop is terrible, better to do it using special tools. Compare for example the result of Radical image optimization tool (Win) or ImageOptim (Mac), and photoshop. Very surprised. - Carlee_Daugherty39 commented on July 8th 19 at 16:22
: I'd be very surprised if modern data transfer speed, I will give out the photo to 12 KB. - shane.Legros commented on July 8th 19 at 16:25
: 1. The question is often not 12Кб 200 or more. 2. The mobile Internet users, even at a good speed pay for the bandwidth, and they pay dearly. 3. The page loading speed and all its files mattered, and will always be. The sooner the better. - tomas.Remp commented on July 8th 19 at 16:28
: The question is whether these changes will increase in download speed. Whether or not the game with these items candles? If I get a boost in half a second it is not necessary. - Velva.Rogahn commented on July 8th 19 at 16:31
: a second very important. 200ms and 700мс is a big difference. And again, don't forget about the traffic that is costly to mobile users. - shane.Legros commented on July 8th 19 at 16:34
Half a second on the wired Internet is 10 seconds from your phone - Velva.Rogahn commented on July 8th 19 at 16:37

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