Page summary

Summary

Metric	Value
Page metrics
Performance Score	84
Total Page Transfer Size	244.0 KB
Requests	9
Timing metrics
TTFB [median]	701 ms
First Paint [median]	1.602 s
Fully Loaded [median]	3.440 s
Google Web Vitals
TTFB [median]	701 ms
First Contentful Paint (FCP) [median]	1.602 s
Largest Contentful Paint (LCP) [median]	2.326 s
Cumulative Layout Shift (CLS) [median]	0.01
Interaction To Next Paint (INP) [median]	468 ms
Total Blocking Time [median]	183 ms
Max Potential FID [median]	220 ms
CPU metrics
CPU long tasks [median]	4
CPU longest task duration	269 ms
CPU last long task happens at	2.380 s
Visual Metrics
First Visual Change [median]	1.633 s
Speed Index [median]	2.508 s
Visual Complete 85% [median]	2.500 s
Visual Complete 99% [median]	3.267 s
Last Visual Change [median]	3.433 s

Timings Summary

Waterfall

Run 3 SpeedIndex median

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

1.3 sCPU Long Task duration 86 ms

1.4 sDOM Content Loaded Time 1.311 sPage Load Time 1.314 sCPU Long Task duration 202 ms

1.6 sCPU Long Task duration 192 ms

1.7 sFirst Contentful Paint 1.602 sFirst Visual Change 1.633 s

1.8 sLayout Shift 0.00259 1.741 s

1.9 s

2 sLayout Shift 0.00009 1.905 s

2.1 s

2.2 sZone 2.134 sZone:ZoneAwarePromise 2.138 sZone:toString 2.139 sZone:util 2.139 sZone:legacy 2.140 sZone:timers 2.140 sZone:requestAnimationFrame 2.140 sZone:blocking 2.140 sZone:EventTarget 2.141 sZone:MutationObserver 2.142 s

2.3 sLCP <DIV> 2.257 s

2.4 sLayout Shift 0.00905 2.329 sCPU Long Task duration 63 ms

2.5 sVisual Complete 85% 2.500 sVisual Complete 95% 2.500 s

2.6 s

2.7 sCPU Long Task duration 220 ms

2.8 s

3 s

3.1 s

3.2 s

3.3 sVisual Complete 99% 3.267 s

3.4 s

3.5 sLast Visual Change 3.433 sFully Loaded 3.440 s

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on privacy and best practices. Tested using Coach-core version 8.1.1.

Coach score

• Total score 87
• Performance score 84
• Privacy score 86
• Best practice score 100

Performance advice (84)

Show/hide details

Title	Advice	Score
Have a fast first contentful paint (firstContentfulPaint)	First contentful paint is poor (131.359 s). It is in the Google Web Vitals poor range, slower than 3 seconds.	0
Description: The First Contentful Paint (FCP) metric measures the time from when the page starts loading to when any part of the page content is rendered on the screen. For this metric, "content" refers to text, images (including background images), <svg> elements, or non-white <canvas> elements.
Inline CSS for faster first render (inlineCss)	The page has both inline styles as well as it is requesting 4 CSS files inside of the head. Let's only inline CSS for really fast render.	90
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.
Offenders: https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/3f6ad93839fbb9c1.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/a75fe8ded042cbfd.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/7e6914a619aaaccf.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/9fc324d068f8ae82.css
Have a fast largest contentful paint (largestContentfulPaint)	Largest contentful paint is poor 131.359 s. It is in the Google Web Vitals poor range, slower than 4.5 seconds.	0
Description: Largest contentful paint is one of Google Web Vitals and reports the render time of the largest image or text block visible within the viewport, relative to when the page first started loading. To be fast according to Google, it needs to render before 2.5 seconds and results over 4 seconds is poor performance.
Offenders: <div class="AppLinksCard_apps-card__apps__AEZJo"></div>
Avoid Frontend single point of failures (spof)	The page has 4 requests inside of the head that can cause a SPOF (single point of failure). Load them asynchronously or move them outside of the document head.	90
Description: A page can be stopped from loading in the browser if a single JavaScript, CSS, and in some cases a font, couldn't be fetched or is loading really slowly (the white screen of death). That is a scenario you really want to avoid. Never load 3rd-party components synchronously inside of the head tag.
Offenders: https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/3f6ad93839fbb9c1.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/a75fe8ded042cbfd.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/7e6914a619aaaccf.css https://frontend-stage-static.k8s.dev.sokolov.io/_next/static/css/9fc324d068f8ae82.css
Avoid extra requests by setting cache headers (cacheHeaders)	The page has 4 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 26.9 kB the next access.	60
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.
Offenders: https://stage.sokolov.ru/spa-images/footer/app-store-badge.svg https://stage.sokolov.ru/spa-images/footer/google-play-badge.svg https://stage.sokolov.ru/spa-images/footer/app-gallery-badge.svg https://stage.sokolov.ru/spa-images/footer/rustore-badge.svg
Avoid too many fonts (fewFonts)	The page has 4 font requests. Do you really need them? What value does the fonts give the user?	60
Description: How many fonts do you need on a page for the user to get the message? Fonts can slow down the rendering of content, try to avoid loading too many of them because worst case it can make the text invisible until they are loaded (FOIT—flash of invisible text), best case they will flicker the text content when they arrive.
Offenders: https://cdn.sokolov.ru/fonts/montserrat/bold.woff2 https://cdn.sokolov.ru/fonts/montserrat/regular.woff2 https://cdn.sokolov.ru/fonts/montserrat/medium.woff2 https://cdn.sokolov.ru/fonts/montserrat/semibold.woff2
Don't use private headers on static content (privateAssets)	The page has 1 request with private headers. 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.
Offenders: https://stage.sokolov.ru/

Best practice advice (100)

Your best practice score is perfect!

Privacy advice (86)

Show/hide details

Title	Advice	Score
Use a good Content-Security-Policy header to make sure you you avoid Cross Site Scripting (XSS) attacks. (contentSecurityPolicyHeader)	Set a Content-Security-Policy header to make sure you are not open for Cross Site Scripting (XSS) attacks. You can start with setting a Content-Security-Policy-Report-Only header, that will only report the violation, not stop the download.	0
Description: Content Security Policy is delivered via a HTTP response header, and defines approved sources of content that the browser may load. It can be an effective countermeasure to Cross Site Scripting (XSS) attacks and is also widely supported and usually easily deployed. https://scotthelme.co.uk/content-security-policy-an-introduction/.
Offenders: https://stage.sokolov.ru/
Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)	Set a referrer-policy header to make sure you do not leak user information.	0
Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
Offenders: https://stage.sokolov.ru/
Set a strict transport header to make sure the user always use HTTPS. (strictTransportSecurityHeader)	A strict transport header is set but miss out on setting includeSubDomainsThe max age is lower than six months. Increase it to get a better score.	70
Description: The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security.

Page info

Page info
Title	Ювелирная компания SOKOLOV. Официальный интернет магазин
Width	1904
Height	2197
DOM elements	525
Avg DOM depth	10
Max DOM depth	15
Iframes	0
Script tags	16
Local storage	0 b
Session storage	0 b
Network Information API	4g

Resource Hints
dns-prefetch
http://cdn.diginetica.net/
preconnect
http://autocomplete.diginetica.net/
https://static.criteo.net/
https://cm.g.doubleclick.net/
https://ad.mail.ru/
https://googleads.g.doubleclick.net/
https://www.googletagmanager.com/
https://www.google-analytics.com/
https://api.mindbox.ru/
https://api.flocktory.com/
https://demo4.paasweb.co.il/

Technologies used to build the page.

Data collected using Wappalyzer version 6.10.66. With updated code from Webappanalyzer 2024-12-27. Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyzer find more information about technologies used.

Technology	Confidence	Category
Nginx	100	Web servers Reverse proxies
HSTS	100	Security

Data from run 3

Visual Metrics

Browser Metrics

Largest Contentful Paint

When in time the page main content is rendered (collected using the Largest Contentful Paint API). Read more about Largest Contentful Paint.

Element type	DIV
Element/tag	<div class="SliderVideo_sklv-video__img__lSQTm" style="background-image: url(&quot;https://stage.sokolov.ru/upload/content/area/a3dc19ce3bd09bc9ea19d73be968b611.jpg&quot;);"></div>
Render time	2.257 s
Elements that needed recalculate style before LCP	3743
Time spent in recalculate style before LCP	127.173 ms
Load time	2.257 s
URL	https://stage.sokolo...9d73be968b611.jpg
Size (width*height)	1606976
DOM path
div#__next > div#catalog > div > main > div > div > section:eq(0) > div > div > div:eq(1) > div > div:eq(1) > a > div> div#__next > div#catalog > div > main > div > div > section:eq(0) > div > div > div:eq(1) > div > div:eq(1) > a > div>

The largest contentful paint is highlighted in the image. If no element is highlighted the element was removed before the screenshot or the LCP API couldn't find the element.

The Largest Contentful Paint API highlighted this image as a part of the LCP.

Detected Cumulative Layout Shift

0.01173 cumulative layout shift collected from the Cumulative Layout Shift API.

These HTML elements contribute most to the Cumulative Layout Shifts of the page. The higher score, the more layout shift.

Score	HTML Element
0.00905	<div class="Text_search__3MlXF"></div>,<div class="HeaderBottom_header-bottom_right__7W_NU"></div>,<section class="DataProvider_sklv-main-section__wXrbC DataProvider_sklv-main-section_main-stories__vSpSr"></section>
body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(1) > div:eq(1) > div,body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(1) > div:eq(2),body > div#__next > div#catalog > div > main > div > div > section:eq(1)
0.00259	<div class="Text_search__3MlXF"></div>
body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(1) > div:eq(1) > div
0.00009	<span class="CitySelectButton_city-text___XqH_"></span>,<button class="ButtonDeprecated_sklv-button__Wy8xr ButtonDeprecated_sklv-button_borderless__776ey" types="borderless" data-qa="header_shops_map_btn"></button>,<button class="ButtonDeprecated_sklv-button__Wy8xr HeaderTop_header-top_left-delivery__GG_8X" types=""></button>
body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(0) > div:eq(1) > div:eq(1) > div:eq(0) > button > span,body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(0) > div:eq(1) > div:eq(2) > a > button,body > div#__next > div#catalog > div > header > div:eq(1) > div:eq(0) > div:eq(1) > a > button

The elements that have shifted place is highlighted in the image (that have a higher value than 0.01). If the element shifted outside of the viewport, you will not see it there. It can be hard to understand what content that has shifted, if that's the case, checkout the video or the filmstrip of the run.

Interaction to Next Paint

Interaction to Next Paint (INP) is a metric that try to measure responsiveness. It's useful if you are testing user journeys. Read more about Interaction to Next Paint.

Long Animation Frames

Read more about the Long Animation Frames API here here.

The top 10 longest animation frames entries

Server timings

There are no Server Timings.

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

PageXray

How the page is built.

Largest assets on the page (by transfer size)

Requests and sizes per content type

Data per domain

Expires and last modified statistics

Render blocking requests

Render blocking information directly from Chrome.

Render information

CPU

Download the Chrome trace log and drag and drop it into Developer Tools / Performance in Chrome.

Long Tasks

Collected using the Long Task API. A long task is a task that take 50 milliseconds or more.

CPU last long task happened at 2.622 s

Individual Long Tasks

CPU time spent

Calculated using Tracium.

Time spent per request

CPU time spent

Third party

Third party requests categorised by Third party web version 0.26.2.

Unmatched third party domains

Here's a list of domains that didn't match any tool in Third party web. If you are sure they are third party domains, please do a PR to that project. You can also fine tune the list using --firstParty.

First party requests and sizes per content type

Calculated using .*sokolov.* (use --firstParty to configure).

Third party requests and sizes per content type

Axe

Axe is an accessibility testing engine for websites and other HTML-based user interfaces. Tested using axe-core version 4.10.2. Read more about axe-core .

Violations

Median number of violations for all the runs. Check each individual run to see all the violations.

| loadingExperience ALL | | originLoadingExperience ALL | | 

CrUx

Chrome User Experience Report (CrUx) is powered by real user measurement across the public web, aggregated from users who have opted-in to syncing their browsing history, have not set up a Sync passphrase, and have usage statistic reporting enabled and is using Chrome.

The CrUx data has four different buckets (form factor) depending on device: DESKTOP, PHONE, TABLET and ALL. You can choose which data to get with --crux.formFactor.

Over the last 30 days, this is the field data for this page for Chrome users.

All pages served from this origin

This is a summary of all pages served from this origin over the last 30 days for Chrome users.