Jcom - Jcom.pl

Overview

Snoop Summary for jcom.pl

This is a free and comprehensive report about jcom.pl. Jcom.pl is hosted in United States on a server with an IP address of 199.59.243.223, where USD is the local currency and the local language is English. Jcom.pl has the potential to be earning an estimated $1 USD per day from advertising revenue. If jcom.pl was to be sold it would possibly be worth $964 USD (based on the daily revenue potential of the website over a 24 month period). Jcom.pl receives an estimated 458 unique visitors every day - a decent amount of traffic! This report was last updated 22nd October, 2023.

About jcom.pl

Site Preview:
Title:
Description:	See related links to what you are looking for.
Keywords and Tags:	internet services, personal pages
Related Terms:	4 jcom, jcom, jcom pocket wifi
Fav Icon:
Age:	Over 2 years old
Domain Created:	5th May, 2022
Domain Updated:	7th May, 2022
Domain Expires:

Review

Snoop Score

1/5

Valuation

$964 USD

Note: All valuation figures are estimates.

Popularity

Low

Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank:	1,846,145
Alexa Reach:	<0.0001%
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority:	0
Moz Page Authority:	0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors:	458
Monthly Visitors:	13,951
Yearly Visitors:	167,305

Note: All visitors figures are estimates.

Visitors By Country

Revenue

Daily Revenue:	$1 USD
Monthly Revenue:	$40 USD
Yearly Revenue:	$477 USD

Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top Ranking Keywords (US)

Domain Analysis

	Value	Length
Domain:	jcom.pl	7
Domain Name:	jcom	4
Extension (TLD):	pl	2

Page Speed Analysis

Average Load Time:	1.15 seconds
Load Time Comparison:	Faster than 64% of sites

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

PWA

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for jcom.pl. This includes details about optimizing page load times which can result in a better user experience.

Passing (57)

Metrics

First Contentful Paint — 0.6 s
The time taken for the first image or text on the page to be rendered.

Largest Contentful Paint — 0.8 s
The timing of the largest text or image that is painted.

Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Speed Index — 0.6 s
The time taken for the page contents to be visibly populated.

Audits

Time to Interactive — 0.6 s
The time taken for the page to become fully interactive.

Max Potential First Input Delay — 20 ms
Users could experience a delay when interacting with the page.

First Meaningful Paint — 0.6 s
The time taken for the primary content of the page to be rendered.

Network Requests
Below is a list of network requests that were made during page load.

URL	Protocol	Network Request Time (Ms)	Network End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://jcom.pl/	http/1.1	1.0410000085831	82.776999950409	1501	827	200	text/html	Document
http://jcom.pl/js/parking.2.104.1.js	http/1.1	91.130999922752	173.85299998522	22622	69019	200	application/javascript	Script
http://jcom.pl/_fd	http/1.1	189.34899997711	302.79799997807	941	529	200	text/html	Fetch
https://www.google.com/adsense/domains/caf.js	h2	190.77599996328	204.38399994373	54733	148194	200	text/javascript	Script
http://jcom.pl/px.gif?ch=1&rn=1.382288996237092	http/1.1	192.96999996901	256.51799994707	421	42	200	image/gif	Image
http://jcom.pl/px.gif?ch=2&rn=1.382288996237092	http/1.1	193.24099999666	214.49199998379	421	42	200	image/gif	Image
http://jcom.pl/_zc	http/1.1	324.12699997425	979.59700000286	694	173	200	text/html	Fetch
http://jcom.pl/_tr	http/1.1	984.72399997711	1161.8569999337	547	2	200	text/html	Fetch
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	http/1.1	986.76399993896	1158.9909999371	1746	1191	200	text/html	Document
http://ww01.jcom.pl/js/parking.2.104.1.js	http/1.1	1163.9889999628	1230.5339999795	22622	69019	200	application/javascript	Script
http://ww01.jcom.pl/_fd?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	http/1.1	1243.290999949	1362.317999959	752	257	200	text/html	Fetch
https://www.google.com/adsense/domains/caf.js	h2	1244.0699999928	1259.9899999499	54725	148179	200	text/javascript	Script
http://ww01.jcom.pl/px.gif?ch=1&rn=6.177536934260154	http/1.1	1245.496999979	1322.9409999847	421	42	200	image/gif	Image
http://ww01.jcom.pl/px.gif?ch=2&rn=6.177536934260154	http/1.1	1245.6449999213	1322.1499999762	421	42	200	image/gif	Image
http://ww01.jcom.pl/_tr	http/1.1	1367.1309999824	1457.5920000076	550	2	200	text/html	Fetch

Show Details

Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
-899.399	11.81
-803.96	12.852
-767.094	7.331
-680.132	19.376
-659.174	6.309
176.711	7.353
251.07	10.271
286.896	7.478

Show Details

Diagnostics
Below is a collection of useful page vitals.
View Data

Metrics
Below is a collection of metrics.
View Data

Script Treemap Data
Provide as required, for treemap app.

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Jcom.pl should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.

Properly size images
Images can slow down the page's load time. Jcom.pl should consider serving more appropriate-sized images.

Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Jcom.pl should consider lazy-loading offscreen and hidden images.

Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Jcom.pl should consider minifying CSS files.

Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Jcom.pl should consider minifying JS files.

Reduce unused CSS
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Jcom.pl should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.

Reduce unused JavaScript — Potential savings of 88 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.google.com/adsense/domains/caf.js	54733	45273
https://www.google.com/adsense/domains/caf.js	54733	45268

Show Details

Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.

Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.

Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.

Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.

Initial server response time was short — Root document took 170 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

URL	Time Spent (Ms)
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	173.221

Show Details

Avoid multiple page redirects — Potential savings of 310 ms
Redirects can cause additional delays before the page can begin loading. Jcom.pl should avoid multiple or unnecessary page redirects.

URL	Time Spent (Ms)
http://jcom.pl/	312
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	0

Show Details

Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Jcom.pl should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.

Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.

Avoid serving legacy JavaScript to modern browsers — Potential savings of 0 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.

URL	Potential Savings (Bytes)
http://ww01.jcom.pl/js/parking.2.104.1.js	144

Show Details

Preload Largest Contentful Paint image
If the LCP element is dynamically added to the page, you should preload the image in order to improve LCP. about preloading LCP elements.

Avoids enormous network payloads — Total size was 159 KiB
Large network payloads can cost users money and are linked to long load times.

URL	Transfer Size (Bytes)
https://www.google.com/adsense/domains/caf.js	54733
https://www.google.com/adsense/domains/caf.js	54725
http://jcom.pl/js/parking.2.104.1.js	22622
http://ww01.jcom.pl/js/parking.2.104.1.js	22622
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	1746
http://jcom.pl/	1501
http://jcom.pl/_fd	941
http://ww01.jcom.pl/_fd?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	752
http://jcom.pl/_zc	694
http://ww01.jcom.pl/_tr	550

Show Details

Uses efficient cache policy on static assets — 0 resources found
Jcom.pl can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.

Avoids an excessive DOM size — 7 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.

Statistic	Element	Value
Total DOM Elements		SHOW DETAILS
Maximum DOM Depth	No sponsors	SHOW DETAILS
Maximum Child Elements	body	SHOW DETAILS

Show Details

Avoid chaining critical requests
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Jcom.pl should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.

JavaScript execution time
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

Minimizes main-thread work — 0.1 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

Category	Time Spent (Ms)
Script Evaluation	53.916
Other	48.191
Script Parsing & Compilation	11.639
Style & Layout	8.957
Rendering	1.685
Parse HTML & CSS	1.445

Show Details

All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.

Keep request counts low and transfer sizes small — 15 requests • 159 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.

Resource Type	Requests	Transfer Size (Bytes)
Total	15	163117
Script	4	154702
Other	5	3484
Document	2	3247
Image	4	1684
Stylesheet	0	0
Media	0	0
Font	0	0
Third-party	2	109458

Show Details

Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.

Third-Party	Transfer Size (Bytes)	Main-Thread Blocking Time (Ms)
Other Google APIs/SDKs	109458	0

Show Details

Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).

Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.

Element
No sponsors ww01.jcom.pl currently does not have any sponsors for you.

Show Details

Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint. about optimal lazy loading.

Avoid large layout shifts
Below is a list of all DOM elements that contribute to the CLS of the page.

Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.

Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.

Avoid long main-thread tasks
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.

Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of jcom.pl on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.

Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of jcom.pl. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.

The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.

`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.

Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.

No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.

`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.

`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.

ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.

ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.

Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.

`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.

`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.

ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.

ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.

`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.

ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.

No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.

`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.

Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.

Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.

Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Contrast

Background and foreground colors have a sufficient contrast ratio
Many (if not most) users find low-contrast text difficult or impossible to read.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.

Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.

Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.

List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.

Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.

`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.

`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Jcom.pl may provide assistance to deaf or hearing-impaired users with captions on videos.

Names and labels

Document doesn't have a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

Failing Elements
html

Show Details

Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.

Failing Elements
html

Show Details

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.

Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.

Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.

The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.

User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.

Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.

Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.

Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.

Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.

HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that jcom.pl should incorporate. This includes practices such as protecting pages with HTTPS.

Passing (15)
Failing (1)

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).

Description	Directive	Severity
No CSP found in enforcement mode		High

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Audits

Allows users to paste into input fields
Preventing input pasting is a bad practice for the UX, and weakens security by blocking password managers. about user-friendly input fields.

Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.

Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.

Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.

Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.

Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.

No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.

Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.

No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 13 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.

Insecure URL	Request Resolution
http://jcom.pl/	Allowed
http://jcom.pl/js/parking.2.104.1.js	Allowed
http://jcom.pl/_fd	Allowed
http://jcom.pl/px.gif?ch=1&rn=1.382288996237092	Allowed
http://jcom.pl/px.gif?ch=2&rn=1.382288996237092	Allowed
http://jcom.pl/_zc	Allowed
http://jcom.pl/_tr	Allowed
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	Allowed
http://ww01.jcom.pl/js/parking.2.104.1.js	Allowed
http://ww01.jcom.pl/_fd?pid=9POT3387I&pbsubid=70495071-1b4a-ae76-e1a3-93bab5185ec0&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	Allowed
http://ww01.jcom.pl/px.gif?ch=1&rn=6.177536934260154	Allowed
http://ww01.jcom.pl/px.gif?ch=2&rn=6.177536934260154	Allowed
http://ww01.jcom.pl/_tr	Allowed

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SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for jcom.pl. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of jcom.pl on mobile screens.

Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.

Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.

Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.

Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.

Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.

Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Content Best Practices

Document doesn't have a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

Failing Elements
html

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Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Crawling and Indexing

Page is blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.

Blocking Directive Source
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PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of jcom.pl. This includes details about web app manifests.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

Failure reason
No manifest was fetched

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PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data

Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data

Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.

Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.

Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

PWA

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for jcom.pl. This includes details about optimizing page load times which can result in a better user experience.

Passing (54)
Average (3)

Metrics

Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Speed Index — 2.0 s
The time taken for the page contents to be visibly populated.

Audits

Time to Interactive — 2.0 s
The time taken for the page to become fully interactive.

Max Potential First Input Delay — 50 ms
Users could experience a delay when interacting with the page.

First Meaningful Paint — 2.0 s
The time taken for the primary content of the page to be rendered.

Network Requests
Below is a list of network requests that were made during page load.

URL	Protocol	Network Request Time (Ms)	Network End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://jcom.pl/	http/1.1	1.210000038147	18.26700001955	1500	827	200	text/html	Document
http://jcom.pl/js/parking.2.104.1.js	http/1.1	27.327000021935	45.578000038862	22622	69019	200	application/javascript	Script
http://jcom.pl/_fd	http/1.1	58.157000035048	112.02500000596	941	529	200	text/html	Fetch
https://www.google.com/adsense/domains/caf.js	h2	59.481000006199	72.145000010729	54725	148179	200	text/javascript	Script
http://jcom.pl/px.gif?ch=1&rn=5.4837065772520655	http/1.1	61.287000030279	77.291000038385	421	42	200	image/gif	Image
http://jcom.pl/px.gif?ch=2&rn=5.4837065772520655	http/1.1	61.503000020981	126.83600002527	421	42	200	image/gif	Image
http://jcom.pl/_zc	http/1.1	139.27400001884	535.14900001884	694	173	200	text/html	Fetch
http://jcom.pl/_tr	http/1.1	538.73600003123	611.4430000186	547	2	200	text/html	Fetch
http://ww01.jcom.pl/?pid=9POT3387I&pbsubid=2126ebf0-f2f5-8b01-94dd-442bcc4899b4&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	http/1.1	542.73500004411	608.25100004673	1747	1191	200	text/html	Document
http://ww01.jcom.pl/js/parking.2.104.1.js	http/1.1	616.50500002503	635.63900002837	22622	69019	200	application/javascript	Script
http://ww01.jcom.pl/_fd?pid=9POT3387I&pbsubid=2126ebf0-f2f5-8b01-94dd-442bcc4899b4&noads=http%3A%2F%2Fww01.jcom.pl%2F%3Fskipskenzo%3Dtrue	http/1.1	648.93100002408	705.35300004482	752	257	200	text/html	Fetch
https://www.google.com/adsense/domains/caf.js	h2	650.21700003743	665.23500001431	54732	148194	200	text/javascript	Script
http://ww01.jcom.pl/px.gif?ch=1&rn=6.636023257284394	http/1.1	652.04700002074	668.18800002337	421	42	200	image/gif	Image
http://ww01.jcom.pl/px.gif?ch=2&rn=6.636023257284394	http/1.1	652.20600000024	682.5530000329	421	42	200	image/gif	Image
http://ww01.jcom.pl/_tr	http/1.1	711.15000003576	750.21900004148	565	2	200	text/html	Fetch

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Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
-519.314	9.653
-489.279	10.863
-455.189	8.235
-412.171	11.338
-400.814	6.993
70.738	8.426
99.929	12.348
137.096	7.249