Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/lavender-light/preview.png	17.5 KiB	12.5 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/simple-theme/preview.png	16.8 KiB	11.9 KiB
SuperHumanizer `ul.extras > li > a > img`	www.adminer.org/static/images/sponsors/superhumanizer.png	15.8 KiB	10.9 KiB
PikaPods `ul.extras > li > a > img`	www.adminer.org/static/images/sponsors/pikapods.png	10.6 KiB	9.7 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/mobile.png	13.6 KiB	9.0 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/esterka/preview.png	13.8 KiB	8.8 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/db.png	10.2 KiB	8.6 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/pappu687/preview.png	10.0 KiB	8.3 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/mvt/preview.png	13.3 KiB	8.3 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/select.png	9.6 KiB	8.0 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/flat/preview.png	12.8 KiB	7.8 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/database.png	9.4 KiB	7.8 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/pokorny/preview.png	9.3 KiB	7.7 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/win98/preview.png	11.0 KiB	7.2 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/dump.png	8.8 KiB	7.1 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/rmsoft_blue/preview.png	12.1 KiB	7.1 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/haeckel/preview.png	8.4 KiB	6.8 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/lucas-sandery/preview.png	11.7 KiB	6.7 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/ichier/preview.png	11.5 KiB	6.5 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/dark.png	8.0 KiB	6.4 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/rmsoft/preview.png	11.3 KiB	6.3 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/schema.png	7.9 KiB	6.3 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/table.png	7.5 KiB	5.8 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/price/preview.png	7.3 KiB	5.7 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/create.png	7.1 KiB	5.4 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/nette/preview.png	6.6 KiB	5.0 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/edit.png	6.6 KiB	4.9 KiB
screenshot `ul.extras > li > a > img`	www.adminer.org/static/designs/nicu/preview.png	6.3 KiB	4.7 KiB
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/auth.png	6.1 KiB	4.5 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-29-DIV

nodeLabel: Adminer is available for: MySQL, MariaDB, PostgreSQL, CockroachDB, SQLite, MS S…

path: 1,HTML,1,BODY,0,DIV,5,DIV

selector: body > div#container > div#info-block

snippet: <div id="info-block">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
www.adminer.org/static/jquery/fancybox/jquery.fancybox-1.3.4.css	2.0 KiB
www.adminer.org/static/style.css	1.9 KiB

Tap interactions may be delayed by up to 300 ms if the viewport is not optimized for mobile.

Why this matters

Performance issues directly impact user engagement and conversion rates.

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Diagnostics

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable

More information about the performance of your application. These numbers don't directly affect the Performance score.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 854 ms

URL	Time Spent
adminer.org/	854 ms
www.adminer.org/	0.0 ms

●Time to Interactive 2.7 s

●Use efficient cache lifetimes

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Max Potential First Input Delay 60 ms

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 486 KiB

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.7 s

●Avoid long main-thread tasks 2 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 40 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 50 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Screenshots `body > div#container > h3`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#header > ul#languages > li > a `div#header > ul#languages > li > a`
div#header > ul#languages > li > a `div#header > ul#languages > li > a`
div#header > ul#languages > li > a `div#header > ul#languages > li > a`
div#header > ul#languages > li > a `div#header > ul#languages > li > a`
div#header > ul#languages > li > a `div#header > ul#languages > li > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Older versions `div#container > ul > li > a`
hever `div#container > ul.extras > li > a`
nette `div#container > ul.extras > li > a`
brade `div#container > ul.extras > li > a`
ng9 `div#container > ul.extras > li > a`
pepa-linha `div#container > ul.extras > li > a`
lucas-sandery `div#container > ul.extras > li > a`
win98 `div#container > ul.extras > li > a`
pappu687 `div#container > ul.extras > li > a`
mvt `div#container > ul.extras > li > a`
lavender-light `div#container > ul.extras > li > a`
rmsoft `div#container > ul.extras > li > a`
rmsoft-blue `div#container > ul.extras > li > a`
rmsoft-dark `div#container > ul.extras > li > a`
adminer-dark `div#container > ul.extras > li > a`
michael-grznar `div#container > ul.extras > li > a`
pepa-linha-dark `div#container > ul.extras > li > a`
ichier `div#container > ul.extras > li > a`
filamentish `div#container > ul.extras > li > a`
mancave `div#container > ul.extras > li > a`
galkaev `div#container > ul.extras > li > a`
dracula `div#container > ul.extras > li > a`
cocoa `div#container > ul.extras > li > a`
simple-theme `div#container > ul.extras > li > a`
arcs-material `div#container > ul.extras > li > a`
price `div#container > ul.extras > li > a`
flat `div#container > ul.extras > li > a`
haeckel `div#container > ul.extras > li > a`
pokorny `div#container > ul.extras > li > a`
paranoiq `div#container > ul.extras > li > a`
bueltge `div#container > ul.extras > li > a`
esterka `div#container > ul.extras > li > a`
nicu `div#container > ul.extras > li > a`
arcs- `div#container > ul.extras > li > a`
konya `div#container > ul.extras > li > a`
kahi `div#container > ul.extras > li > a`
Several styles by Pematon `div#container > ul > li > a`
Several styles by Robert Mesaros `div#container > ul > li > a`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●`[lang]` attributes have a valid value

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA attributes are used as specified for the element's role

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
Adminer – screenshot `div#container > div#info-block > div#screen > img`	www.adminer.org/static/images/adminer.png	266 x 157	266 x 157	399 x 236
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/auth.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/create.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/dark.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/database.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/db.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/dump.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/edit.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/schema.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/select.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/sql.png	100 x 100	100 x 100	150 x 150
div#container > p.screenshots > a > img `div#container > p.screenshots > a > img`	www.adminer.org/static/screenshots/preview/table.png	100 x 100	100 x 100	150 x 150
ul#languages > li > a > img `ul#languages > li > a > img`	www.adminer.org/static/images/flags/cs.gif	16 x 11	16 x 11	24 x 17
ul#languages > li > a > img `ul#languages > li > a > img`	www.adminer.org/static/images/flags/de.gif	16 x 11	16 x 11	24 x 17
div#header > ul#languages > li > img `div#header > ul#languages > li > img`	www.adminer.org/static/images/flags/en.gif	16 x 11	16 x 11	24 x 17
ul#languages > li > a > img `ul#languages > li > a > img`	www.adminer.org/static/images/flags/pl.gif	16 x 11	16 x 11	24 x 17
ul#languages > li > a > img `ul#languages > li > a > img`	www.adminer.org/static/images/flags/ro.gif	16 x 11	16 x 11	24 x 17
ul#languages > li > a > img `ul#languages > li > a > img`	www.adminer.org/static/images/flags/sk.gif	16 x 11	16 x 11	24 x 17

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.adminer.org/en/security/	More information

Canonical links suggest which URL to show in search results. Learn more about canonical links.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`