Library Genesis - Library.lol

Overview

Snoop Summary for library.lol

This is a free and comprehensive report about library.lol. The domain library.lol is currently hosted on a server located in France with the IP address 193.218.118.42, where the local currency is EUR and French is the local language. Library.lol is expected to earn an estimated $15,036 USD per day from advertising revenue. The sale of library.lol would possibly be worth $10,976,163 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Library.lol receives an estimated 1,614,868 unique visitors every day - an unbelievable amount of traffic! This report was last updated 5th April, 2023.

About library.lol

Site Preview:
Title:	Library Genesis
Description:
Keywords and Tags:	education, reference
Related Terms:	library genesis
Fav Icon:
Age:
Domain Created:
Domain Updated:
Domain Expires:

Review

Snoop Score

4/5 (Excellent!)

Valuation

$10,976,163 USD

Note: All valuation figures are estimates.

Popularity

Worldwide Sensation

Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank:	1,654
Alexa Reach:	0.0311%
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority:	37
Moz Page Authority:	43

Rank By Country

Country	Alexa Rank
Austria	969
Australia	1,014
Brazil	1,574
Canada	839
Switzerland	1,050
China	1,298
Czech Republic	784
Germany	1,517
Algeria	1,510
Egypt	2,071
Spain	2,947
Ethiopia	390
United Kingdom	2,302
Hong Kong	1,889
Indonesia	1,470
Ireland	740
India	2,605
Iran, Islamic Republic Of	1,471
Italy	2,127
Japan	6,192
Korea Republic Of	6,244
Morocco	1,176
Mexico	1,663
Nigeria	3,077
Netherlands	2,059
Norway	1,138
Pakistan	1,323
Poland	2,460
Romania	960
Saudi Arabia	2,624
Sweden	1,299
Singapore	1,134
Turkey	1,277
Taiwan, Province Of China	4,128
United States	1,613
Venezuela	2,368
South Africa	1,737

Show Rank By Country

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors:	1,614,868
Monthly Visitors:	49,151,495
Yearly Visitors:	589,426,820

Note: All visitors figures are estimates.

Visitors By Country

Country	Visitors (Unique)	Percentage
Austria	Daily: 9,689 Monthly: 294,909 Yearly: 3,536,561	0.6%
Australia	Daily: 30,682 Monthly: 933,878 Yearly: 11,199,110	1.9%
Brazil	Daily: 58,135 Monthly: 1,769,454 Yearly: 21,219,366	3.6%
Canada	Daily: 46,831 Monthly: 1,425,393 Yearly: 17,093,378	2.9%
Switzerland	Daily: 8,074 Monthly: 245,757 Yearly: 2,947,134	0.5%
China	Daily: 452,163 Monthly: 13,762,419 Yearly: 165,039,510	28%
Czech Republic	Daily: 20,993 Monthly: 638,969 Yearly: 7,662,549	1.3%
Germany	Daily: 48,446 Monthly: 1,474,545 Yearly: 17,682,805	3%
Algeria	Daily: 9,689 Monthly: 294,909 Yearly: 3,536,561	0.6%
Egypt	Daily: 17,764 Monthly: 540,666 Yearly: 6,483,695	1.1%
Spain	Daily: 12,919 Monthly: 393,212 Yearly: 4,715,415	0.8%
Ethiopia	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
United Kingdom	Daily: 30,682 Monthly: 933,878 Yearly: 11,199,110	1.9%
Hong Kong	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
Indonesia	Daily: 24,223 Monthly: 737,272 Yearly: 8,841,402	1.5%
Ireland	Daily: 8,074 Monthly: 245,757 Yearly: 2,947,134	0.5%
India	Daily: 82,358 Monthly: 2,506,726 Yearly: 30,060,768	5.1%
Iran, Islamic Republic Of	Daily: 41,987 Monthly: 1,277,939 Yearly: 15,325,097	2.6%
Italy	Daily: 22,608 Monthly: 688,121 Yearly: 8,251,975	1.4%
Japan	Daily: 20,993 Monthly: 638,969 Yearly: 7,662,549	1.3%
Korea Republic Of	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
Morocco	Daily: 8,074 Monthly: 245,757 Yearly: 2,947,134	0.5%
Mexico	Daily: 25,838 Monthly: 786,424 Yearly: 9,430,829	1.6%
Nigeria	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
Netherlands	Daily: 12,919 Monthly: 393,212 Yearly: 4,715,415	0.8%
Norway	Daily: 9,689 Monthly: 294,909 Yearly: 3,536,561	0.6%
Other	Daily: 188,940 Monthly: 5,750,725 Yearly: 68,962,938	11.7%
Pakistan	Daily: 19,378 Monthly: 589,818 Yearly: 7,073,122	1.2%
Poland	Daily: 14,534 Monthly: 442,363 Yearly: 5,304,841	0.9%
Romania	Daily: 16,149 Monthly: 491,515 Yearly: 5,894,268	1%
Saudi Arabia	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
Sweden	Daily: 8,074 Monthly: 245,757 Yearly: 2,947,134	0.5%
Singapore	Daily: 11,304 Monthly: 344,060 Yearly: 4,125,988	0.7%
Turkey	Daily: 25,838 Monthly: 786,424 Yearly: 9,430,829	1.6%
Taiwan, Province Of China	Daily: 9,689 Monthly: 294,909 Yearly: 3,536,561	0.6%
United States	Daily: 237,386 Monthly: 7,225,270 Yearly: 86,645,743	14.7%
Venezuela	Daily: 9,689 Monthly: 294,909 Yearly: 3,536,561	0.6%
South Africa	Daily: 14,534 Monthly: 442,363 Yearly: 5,304,841	0.9%

Note: All visitors figures are estimates.

Revenue

Daily Revenue:	$15,036 USD
Monthly Revenue:	$457,643 USD
Yearly Revenue:	$5,488,076 USD

Note: All revenue figures are estimates.

Revenue By Country

Country	Revenue	Percentage
Austria	Daily: $4 USD Monthly: $122 USD Yearly: $1,462 USD	<0.1%
Australia	Daily: $87 USD Monthly: $2,655 USD Yearly: $31,838 USD	0.6%
Brazil	Daily: $67 USD Monthly: $2,049 USD Yearly: $24,573 USD	0.4%
Canada	Daily: $197 USD Monthly: $5,998 USD Yearly: $71,927 USD	1.3%
Switzerland	Daily: $11 USD Monthly: $322 USD Yearly: $3,857 USD	0.1%
China	Daily: $1,115 USD Monthly: $33,937 USD Yearly: $406,975 USD	7.4%
Czech Republic	Daily: $3 USD Monthly: $94 USD Yearly: $1,127 USD	<0.1%
Germany	Daily: $302 USD Monthly: $9,197 USD Yearly: $110,296 USD	2%
Algeria	Daily: $1 USD Monthly: $43 USD Yearly: $512 USD	<0.1%
Egypt	Daily: $3 USD Monthly: $101 USD Yearly: $1,213 USD	<0.1%
Spain	Daily: $19 USD Monthly: $574 USD Yearly: $6,887 USD	0.1%
Ethiopia	Daily: $1 USD Monthly: $37 USD Yearly: $449 USD	<0.1%
United Kingdom	Daily: $238 USD Monthly: $7,229 USD Yearly: $86,688 USD	1.6%
Hong Kong	Daily: $3 USD Monthly: $105 USD Yearly: $1,260 USD	<0.1%
Indonesia	Daily: $39 USD Monthly: $1,201 USD Yearly: $14,406 USD	0.3%
Ireland	Daily: $2 USD Monthly: $64 USD Yearly: $769 USD	<0.1%
India	Daily: $573 USD Monthly: $17,441 USD Yearly: $209,159 USD	3.8%
Iran, Islamic Republic Of	Daily: $0 USD Monthly: $0 USD Yearly: $0 USD	<0.1%
Italy	Daily: $32 USD Monthly: $980 USD Yearly: $11,758 USD	0.2%
Japan	Daily: $25 USD Monthly: $752 USD Yearly: $9,019 USD	0.2%
Korea Republic Of	Daily: $23 USD Monthly: $713 USD Yearly: $8,546 USD	0.2%
Morocco	Daily: $2 USD Monthly: $49 USD Yearly: $583 USD	<0.1%
Mexico	Daily: $16 USD Monthly: $483 USD Yearly: $5,795 USD	0.1%
Nigeria	Daily: $7 USD Monthly: $205 USD Yearly: $2,453 USD	<0.1%
Netherlands	Daily: $26 USD Monthly: $781 USD Yearly: $9,363 USD	0.2%
Norway	Daily: $4 USD Monthly: $112 USD Yearly: $1,341 USD	<0.1%
Other	Daily: $0 USD Monthly: $0 USD Yearly: $0 USD	<0.1%
Pakistan	Daily: $19 USD Monthly: $571 USD Yearly: $6,851 USD	0.1%
Poland	Daily: $7 USD Monthly: $227 USD Yearly: $2,722 USD	<0.1%
Romania	Daily: $3 USD Monthly: $104 USD Yearly: $1,251 USD	<0.1%
Saudi Arabia	Daily: $6 USD Monthly: $185 USD Yearly: $2,217 USD	<0.1%
Sweden	Daily: $7 USD Monthly: $219 USD Yearly: $2,628 USD	<0.1%
Singapore	Daily: $5 USD Monthly: $166 USD Yearly: $1,988 USD	<0.1%
Turkey	Daily: $22 USD Monthly: $669 USD Yearly: $8,026 USD	0.1%
Taiwan, Province Of China	Daily: $2 USD Monthly: $58 USD Yearly: $698 USD	<0.1%
United States	Daily: $12,135 USD Monthly: $369,359 USD Yearly: $4,429,366 USD	80.7%
Venezuela	Daily: $1 USD Monthly: $20 USD Yearly: $241 USD	<0.1%
South Africa	Daily: $27 USD Monthly: $820 USD Yearly: $9,831 USD	0.2%

Note: All revenue figures are estimates.

SEO

Backlinks Analysis (SEMrush)

Top Ranking Keywords (US)

Domain Analysis

	Value	Length
Domain:	library.lol	11
Domain Name:	library	7
Extension (TLD):	lol	3

Page Speed Analysis

Average Load Time:	0.70 seconds
Load Time Comparison:	Faster than 86% of sites

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

PWA

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

URL: http://library.lol/

Updated: 5th April, 2023

0.83 seconds

First Contentful Paint (FCP)

95%

3%

2%

0.00 seconds

First Input Delay (FID)

100%

0%

Performance

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

Passing (56)
Failing (1)

Metrics

First Contentful Paint — 0.2 s
The time taken for the first image or text on the page to be rendered.

Largest Contentful Paint — 0.2 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 — 0.4 s
The time taken for the page contents to be visibly populated.

Audits

Time to Interactive — 0.2 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 — 0.2 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://library.lol/	http/1.1	0.77799999713898	565.41799998283	492	309	200	text/html	Document

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)
567.835	6.66

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. Library.lol 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. Library.lol should consider serving more appropriate-sized images.

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

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

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

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

Reduce unused JavaScript
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.

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 570 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://library.lol/	565.635

Show Details

Avoid multiple page redirects
Redirects can cause additional delays before the page can begin loading. Library.lol should avoid multiple or unnecessary page redirects.

Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Library.lol 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
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.

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 0 KiB
Large network payloads can cost users money and are linked to long load times.

URL	Transfer Size (Bytes)
http://library.lol/	492

Show Details

Uses efficient cache policy on static assets — 0 resources found
Library.lol 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 — 4 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	libgen.rs	SHOW DETAILS
Maximum Child Elements	libgen.rs \| libgen.is \| libgen.st	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. Library.lol 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 — 0.0 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)
Other	10.685
Script Evaluation	4.276
Style & Layout	2.552
Script Parsing & Compilation	1.048
Rendering	0.571
Parse HTML & CSS	0.312

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 — 1 request • 0 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)
Document	1	492
Total	1	492
Stylesheet	0	0
Image	0	0
Media	0	0
Font	0	0
Script	0	0
Other	0	0
Third-party	0	0

Show Details

Minimize third-party usage
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.

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
libgen.rs \| libgen.is \| libgen.st

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.

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 library.lol. This includes details about various page attributes that can be optimized.

Passing (44)
Manual Checks (10)

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.

Document has 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.

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 `[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.

`<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"]`
Library.lol may provide assistance to deaf or hearing-impaired users with captions on videos.

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 library.lol 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 — 1 insecure request 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://library.lol/	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 library.lol. This includes optimizations such as providing meta data.

Content Best Practices

Document has 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.

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.

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.

Mobile Friendly

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.

Mobile Friendly

Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of library.lol on mobile screens.

Content Best Practices

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
SHOW DETAILS

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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 library.lol. 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

Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of library.lol on mobile screens.

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)

URL: http://library.lol/

Updated: 5th April, 2023

0.84 seconds

First Contentful Paint (FCP)

94%

3%

0.25 seconds

First Input Delay (FID)

1%

96%

3%

Performance

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

Passing (57)
Failing (1)

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 — 0.6 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 — 1.0 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 — 40 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://library.lol/	http/1.1	1.3340001106262	546.70900011063	492	309	200	text/html	Document

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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)
550.688	10.416