Metrics
First Contentful Paint
1.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index
2.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint
1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive
1.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time
110 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Cumulative Layout Shift
0.003
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Values are estimated and may vary. The performance score is calculated directly from these metrics.See calculator.
DiagnosticsMore information about the performance of your application. These numbers don't directly affect the Performance score.
Minimize main-thread work
2.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn more
Category | Time Spent |
|---|---|
Rendering | 1,052 ms |
Script Evaluation | 670 ms |
Style & Layout | 365 ms |
Other | 357 ms |
Parse HTML & CSS | 77 ms |
Script Parsing & Compilation | 21 ms |
Avoid chaining critical requests
4 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Learn more.
Maximum critical path latency: 1,300 ms
Initial Navigation
…cloudflare-static/email-decode.min.js
- 100 ms, 1.52 KB
(maximilian.tech)
/js/particles.min.js
- 700 ms, 9.34 KB
(maximilian.tech)
/js/evil-icons.min.js
- 600 ms, 10.29 KB
(maximilian.tech)
/js/app.js
- 450 ms, 1.74 KB
(maximilian.tech)
Keep request counts low and transfer sizes small
6 requests • 33 KiB
To set budgets for the quantity and size of page resources, add a budget.json file. Learn more.
Resource Type | Requests | Transfer Size |
|---|---|---|
Total | 6 | 32.7 KB |
Script | 4 | 22.9 KB |
Document | 1 | 8.5 KB |
Other | 1 | 1.3 KB |
Stylesheet | 0 | 0 KB |
Image | 0 | 0 KB |
Media | 0 | 0 KB |
Font | 0 | 0 KB |
Third-party | 0 | 0 KB |
Largest Contentful Paint element
1 element found
This is the largest contentful element painted within the viewport. Learn More
Element |
|---|
Prerequisites Docker Client installed An Autonomous Database instance which is … <p class="c-post-card__excerpt u-font-medium"> |
Avoid large layout shifts
1 element found
These DOM elements contribute most to the CLS of the page.
Element | CLS Contribution |
|---|---|
Cloud computing| <h3 class="typer-text"> | 0.002966172960069444 |
Avoid long main-thread tasks
5 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn more
URL | Start Time | Duration |
|---|---|---|
861 ms | 145 ms | |
/js/particles.min.js (maximilian.tech) | 1,734 ms | 118 ms |
/js/particles.min.js (maximilian.tech) | 1,377 ms | 74 ms |
/js/particles.min.js (maximilian.tech) | 1,451 ms | 66 ms |
/js/particles.min.js (maximilian.tech) | 1,320 ms | 57 ms |
Passed audits
(28)
Passed audits
(28)
Eliminate render-blocking resources
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn more.
Properly size images
Serve images that are appropriately-sized to save cellular data and improve load time. Learn more.
Defer offscreen images
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn more.
Minify CSS
Minifying CSS files can reduce network payload sizes. Learn more.
Minify JavaScript
Potential savings of 4 KiB
Minifying JavaScript files can reduce payload sizes and script parse time. Learn more.
URL | Transfer Size | Potential Savings |
|---|---|---|
/js/particles.min.js (maximilian.tech) | 9.3 KB | 3.7 KB |
Remove unused CSS
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity. Learn more.
Remove unused JavaScript
Remove unused JavaScript to reduce bytes consumed by network activity. Learn more.
Efficiently encode images
Optimized images load faster and consume less cellular data. Learn more.
Serve images in next-gen formats
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more.
Enable text compression
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes. Learn more.
Preconnect to required origins
Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn more.
Initial server response time was short
Root document took 580 ms
Keep the server response time for the main document short because all other requests depend on it. Learn more.
URL | Time Spent |
|---|---|
580 ms |
Avoid multiple page redirects
Redirects introduce additional delays before the page can be loaded. Learn more.
Preload key requests
Consider using `<link rel=preload>` to prioritize fetching resources that are currently requested later in page load. Learn more.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes. Learn more
Remove duplicate modules in JavaScript bundles
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers. Learn More
Avoids enormous network payloads
Total size was 33 KiB
Large network payloads cost users real money and are highly correlated with long load times. Learn more.
URL | Transfer Size |
|---|---|
/js/evil-icons.min.js (maximilian.tech) | 10.3 KB |
/js/particles.min.js (maximilian.tech) | 9.3 KB |
8.5 KB | |
/js/app.js (maximilian.tech) | 1.7 KB |
…cloudflare-static/email-decode.min.js (maximilian.tech) | 1.5 KB |
/js/particles.json (maximilian.tech) | 1.3 KB |
Uses efficient cache policy on static assets
4 resources found
A long cache lifetime can speed up repeat visits to your page. Learn more.
URL | Cache TTL | Transfer Size |
|---|---|---|
…cloudflare-static/email-decode.min.js (maximilian.tech) | 2 d | 2 KB |
/js/evil-icons.min.js (maximilian.tech) | 31 d | 10 KB |
/js/particles.min.js (maximilian.tech) | 31 d | 9 KB |
/js/app.js (maximilian.tech) | 31 d | 2 KB |
Avoids an excessive DOM size
414 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn more.
Statistic | Element | Value |
|---|---|---|
Total DOM Elements | 414 | |
Maximum DOM Depth | <line x1="256" y1="48" x2="256" y2="96"> | 12 |
Maximum Child Elements | <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="ei-sprite"> | 70 |
User Timing marks and measures
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences. Learn more.
JavaScript execution time
0.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn more.
URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
1,494 ms | 25 ms | 7 ms | |
/js/particles.min.js (maximilian.tech) | 658 ms | 379 ms | 5 ms |
/js/app.js (maximilian.tech) | 247 ms | 235 ms | 2 ms |
Unattributable | 84 ms | 11 ms | 1 ms |
/js/evil-icons.min.js (maximilian.tech) | 51 ms | 15 ms | 4 ms |
All text remains visible during webfont loads
Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Learn more.
Minimize third-party usage
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn more.
Uses passive listeners to improve scrolling performance
Consider marking your touch and wheel event listeners as `passive` to improve your page's scroll performance. Learn more.
Avoids document.write()
document.write()
For users on slow connections, external scripts dynamically injected via `document.write()` can delay page load by tens of seconds. Learn more.
Avoid non-composited animations
Animations which are not composited can be janky and increase CLS. Learn more
Avoids large JavaScript libraries with smaller alternatives
0 large libraries found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size. Learn more.
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged.
Additional items to manually check
(10)
These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Additional items to manually check
(10)
These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
The page has a logical tab order
Tabbing through the page follows the visual layout. Users cannot focus elements that are offscreen. Learn more.
Interactive controls are keyboard focusable
Custom interactive controls are keyboard focusable and display a focus indicator. Learn more.
Interactive elements indicate their purpose and state
Interactive elements, such as links and buttons, should indicate their state and be distinguishable from non-interactive elements. Learn more.
The user's focus is directed to new content added to the page
If new content, such as a dialog, is added to the page, the user's focus is directed to it. Learn more.
User focus is not accidentally trapped in a region
A user can tab into and out of any control or region without accidentally trapping their focus. Learn more.
Custom controls have associated labels
Custom interactive controls have associated labels, provided by aria-label or aria-labelledby. Learn more.
Custom controls have ARIA roles
Custom interactive controls have appropriate ARIA roles. Learn more.
Visual order on the page follows DOM order
DOM order matches the visual order, improving navigation for assistive technology. Learn more.
Offscreen content is hidden from assistive technology
Offscreen content is hidden with display: none or aria-hidden=true. Learn more.
HTML5 landmark elements are used to improve navigation
Landmark elements (<main>, <nav>, etc.) are used to improve the keyboard navigation of the page for assistive technology. Learn more.
Passed audits
(16)
Passed audits
(16)
[aria-*] attributes match their roles
[aria-*] attributes match their roles
Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn more.
[aria-hidden="true"] is not present on the document <body>
[aria-hidden="true"] is not present on the document <body>
Assistive technologies, like screen readers, work inconsistently when `aria-hidden="true"` is set on the document `<body>`. Learn more.
[role]s have all required [aria-*] attributes
[role]s have all required [aria-*] attributes
Some ARIA roles have required attributes that describe the state of the element to screen readers. Learn more.
Elements with an ARIA [role] that require children to contain a specific [role] have all required children.
[role] that require children to contain a specific [role] have all required children.
Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more.
[role]s are contained by their required parent element
[role]s are contained by their required parent element
Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more.
[role] values are valid
[role] values are valid
ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more.
[aria-*] attributes have valid values
[aria-*] attributes have valid values
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more.
[aria-*] attributes are valid and not misspelled
[aria-*] attributes are valid and not misspelled
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid names. Learn more.
The page contains a heading, skip link, or landmark region
Adding ways to bypass repetitive content lets keyboard users navigate the page more efficiently. Learn more.
Background and foreground colors have a sufficient contrast ratio
Low-contrast text is difficult or impossible for many users to read. Learn more.
Document has a <title> element
<title> element
The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more.
Heading elements appear in a sequentially-descending order
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.
<html> element has a [lang] attribute
<html> element has a [lang] attribute
If a page doesn't specify a lang attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more.
<html> element has a valid value for its [lang] attribute
<html> element has a valid value for its [lang] attribute
Specifying a valid BCP 47 language helps screen readers announce text properly. Learn more.
Links have a discernible name
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 more.
[user-scalable="no"] is not used in the <meta name="viewport"> element and the [maximum-scale] attribute is not less than 5.
[user-scalable="no"] is not used in the <meta name="viewport"> element and the [maximum-scale] attribute is not less than 5.
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more.
Not applicable
(25)
Not applicable
(25)
[accesskey] values are unique
[accesskey] values are unique
Access keys let users quickly focus a part of the page. For proper navigation, each access key must be unique. Learn more.
[aria-hidden="true"] elements do not contain focusable descendents
[aria-hidden="true"] elements do not contain focusable descendents
Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn more.
ARIA input fields have accessible names
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more.
ARIA toggle fields have accessible names
When a toggle field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more.
Buttons have an accessible name
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn more.
<dl>'s contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
<dl>'s contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
When definition lists are not properly marked up, screen readers may produce confusing or inaccurate output. Learn more.
Definition list items are wrapped in <dl> elements
<dl> elements
Definition list items (`<dt>` and `<dd>`) must be wrapped in a parent `<dl>` element to ensure that screen readers can properly announce them. Learn more.
[id] attributes on active, focusable elements are unique
[id] attributes on active, focusable elements are unique
All focusable elements must have a unique `id` to ensure that they're visible to assistive technologies. Learn more.
ARIA IDs are unique
The value of an ARIA ID must be unique to prevent other instances from being overlooked by assistive technologies. Learn more.
No form fields have multiple labels
Form fields with multiple labels can be confusingly announced by assistive technologies like screen readers which use either the first, the last, or all of the labels. Learn more.
<frame> or <iframe> elements have a title
<frame> or <iframe> elements have a title
Screen reader users rely on frame titles to describe the contents of frames. Learn more.
Image elements have [alt] attributes
[alt] attributes
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more.
<input type="image"> elements have [alt] text
<input type="image"> elements have [alt] text
When an image is being used as an `<input>` button, providing alternative text can help screen reader users understand the purpose of the button. Learn more.
Form elements have associated labels
Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more.
Presentational <table> elements avoid using <th>, <caption> or the [summary] attribute.
<table> elements avoid using <th>, <caption> or the [summary] attribute.
A table being used for layout purposes should not include data elements, such as the th or caption elements or the summary attribute, because this can create a confusing experience for screen reader users. Learn more.
Lists contain only <li> elements and script supporting elements (<script> and <template>).
<li> elements and script supporting elements (<script> and <template>).
Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more.
List items (<li>) are contained within <ul> or <ol> parent elements
<li>) are contained within <ul> or <ol> parent elements
Screen readers require list items (`<li>`) to be contained within a parent `<ul>` or `<ol>` to be announced properly. Learn more.
The document does not use <meta http-equiv="refresh">
<meta http-equiv="refresh">
Users do not expect a page to refresh automatically, and doing so will move focus back to the top of the page. This may create a frustrating or confusing experience. Learn more.
<object> elements have [alt] text
<object> elements have [alt] text
Screen readers cannot translate non-text content. Adding alt text to `<object>` elements helps screen readers convey meaning to users. Learn more.
No element has a [tabindex] value greater than 0
[tabindex] value greater than 0
A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more.
Cells in a <table> element that use the [headers] attribute refer to table cells within the same table.
<table> element that use the [headers] attribute refer to table cells within the same table.
Screen readers have features to make navigating tables easier. Ensuring `<td>` cells using the `[headers]` attribute only refer to other cells in the same table may improve the experience for screen reader users. Learn more.
<th> elements and elements with [role="columnheader"/"rowheader"] have data cells they describe.
<th> elements and elements with [role="columnheader"/"rowheader"] have data cells they describe.
Screen readers have features to make navigating tables easier. Ensuring table headers always refer to some set of cells may improve the experience for screen reader users. Learn more.
[lang] attributes have a valid value
[lang] attributes have a valid value
Specifying a valid BCP 47 language on elements helps ensure that text is pronounced correctly by a screen reader. Learn more.
<video> elements contain a <track> element with [kind="captions"]
<video> elements contain a <track> element with [kind="captions"]
When a video provides a caption it is easier for deaf and hearing impaired users to access its information. Learn more.
<video> elements contain a <track> element with [kind="description"]
<video> elements contain a <track> element with [kind="description"]
Audio descriptions provide relevant information for videos that dialogue cannot, such as facial expressions and scenes. Learn more.
Passed audits
(16)
Passed audits
(16)
Uses HTTPS
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being servedover HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more.
Links to cross-origin destinations are safe
Add `rel="noopener"` or `rel="noreferrer"` to any external links to improve performance and prevent security vulnerabilities. Learn more.
Avoids requesting the geolocation permission on page load
Users are mistrustful of or confused by sites that request their location without context. Consider tying the request to a user action instead. Learn more.
Avoids requesting the notification permission on page load
Users are mistrustful of or confused by sites that request to send notifications without context. Consider tying the request to user gestures instead. Learn more.
Avoids front-end JavaScript libraries with known security vulnerabilities
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers. Learn more.
Allows users to paste into password fields
Preventing password pasting undermines good security policy. Learn more.
Displays images with correct aspect ratio
Image display dimensions should match natural aspect ratio. Learn more.
Serves images with appropriate resolution
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn more.
Page has the HTML doctype
Specifying a doctype prevents the browser from switching to quirks-mode. Learn more.
Properly defines charset
A character encoding declaration is required. It can be done with a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. Learn more.
Avoids unload event listeners
unload event listeners
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Consider using the `pagehide` or `visibilitychange` events instead. Learn More
Avoids Application Cache
Application Cache is deprecated. Learn more.
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more.
Avoids deprecated APIs
Deprecated APIs will eventually be removed from the browser. Learn more.
No browser errors logged to the console
Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more
Page has valid source maps
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more.
Not applicable
(1)
Not applicable
(1)
Fonts with font-display: optional are preloaded
font-display: optional are preloaded
Preload `optional` fonts so first-time visitors may use them. Learn More
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more.
Additional items to manually check
(1)
Run these additional validators on your site to check additional SEO best practices.
Additional items to manually check
(1)
Run these additional validators on your site to check additional SEO best practices.
Structured data is valid
Run the Structured Data Testing Tool and the Structured Data Linter to validate structured data. Learn more.
Passed audits
(13)
Passed audits
(13)
Has a <meta name="viewport"> tag with width or initial-scale
<meta name="viewport"> tag with width or initial-scale
Add a `<meta name="viewport">` tag to optimize your app for mobile screens. Learn more.
Document has a <title> element
<title> element
The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more.
Document has a meta description
Meta descriptions may be included in search results to concisely summarize page content. Learn more.
Page has successful HTTP status code
Pages with unsuccessful HTTP status codes may not be indexed properly. Learn more.
Links have descriptive text
Descriptive link text helps search engines understand your content. Learn more.
Links are crawlable
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn More
Page isn’t blocked from indexing
Search engines are unable to include your pages in search results if they don't have permission to crawl them. Learn more.
robots.txt is valid
If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more.
Document has a valid hreflang
hreflang
hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more.
Document has a valid rel=canonical
rel=canonical
Canonical links suggest which URL to show in search results. Learn more.
Document uses legible font sizes
99.53% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px. Learn more.
Source | Selector | % of Page Text | Font Size |
|---|---|---|---|
.sidenav a | 0.26% | 10.8px | |
<a href="mailto:blog@maximilian.tech" target="_blank" rel="noreferrer" style="font-size: x-small;"> | 0.07% | 10px | |
<a href="https://github.com/m1nka/" target="_blank" rel="noreferrer" style="font-size: x-small;"> | 0.06% | 10px | |
<a href="/about.html" target="_blank" rel="noreferrer" style="font-size: x-small;"> | 0.05% | 10px | |
.sidenav-small-links>span | 0.01% | 10.8px | |
<span style="font-size: x-small;"> | 0.01% | 10px | |
<span style="font-size: x-small;"> | 0.01% | 10px | |
Legible text | 99.53% | ≥ 12px |
Document avoids plugins
Search engines can't index plugin content, and many devices restrict plugins or don't support them. Learn more.
Tap targets are sized appropriately
100% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements. Learn more.
Not applicable
(1)
Not applicable
(1)
Image elements have [alt] attributes
[alt] attributes
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more.