C — https://news.ycombinator.com

Site Health

Score: 77 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

'unsafe-inline' found in script source

Security › Content Security Policy

1 control(s) without accessible label

Accessibility › Form Accessibility

1 image-in-link without alt text

Accessibility › Alt Text Quality

3 image(s) missing alt attribute

Accessibility › Alt Text Quality

30 link(s) with no accessible text

Accessibility › Link & Button Quality

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fnews.ycombinator.com)](https://beavercheck.com/results/fb79017d-1cff-466d-a790-574f7fd72f1f)

HTML

<a href="https://beavercheck.com/results/fb79017d-1cff-466d-a790-574f7fd72f1f"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fnews.ycombinator.com" alt="BeaverCheck Score"></a>

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

100

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

818 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

865 ms

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

818 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

865 ms

Detailed Report

Audit breakdown by category with detailed findings.

100

Performance

Insights

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

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

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

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.

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.

URL	Transfer Size
news.ycombinator.com/news.css?eyaVsIDANOywtSpLPKI9	2.0 KiB

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

●Use efficient cache lifetimes

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Time to Interactive 0.9 s

●Max Potential First Input Delay 40 ms

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 11 KiB

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.3 s

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 60 ms

●Server Backend Latencies 0 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 60 ms

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○Avoid long main-thread tasks

○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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Failing Elements
1. `tbody > tr#47637757 > td.title > span.rank`
arxiv.org `span.titleline > span.sitebit > a > span.sitestr`
300 points by Anon84 5 hours ago \| hide \| 90 comments `tbody > tr > td.subtext > span.subline`
300 points `tr > td.subtext > span.subline > span#score_47637757`
Anon84 `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
90 comments `tr > td.subtext > span.subline > a`
2. `tbody > tr#47639524 > td.title > span.rank`
thetimes.com `span.titleline > span.sitebit > a > span.sitestr`
177 points by macleginn 1 hour ago \| hide \| 87 comments `tbody > tr > td.subtext > span.subline`
177 points `tr > td.subtext > span.subline > span#score_47639524`
macleginn `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
87 comments `tr > td.subtext > span.subline > a`
3. `tbody > tr#47637287 > td.title > span.rank`
wyounas.com `span.titleline > span.sitebit > a > span.sitestr`
138 points by simplegeek 7 hours ago \| hide \| 40 comments `tbody > tr > td.subtext > span.subline`
138 points `tr > td.subtext > span.subline > span#score_47637287`
simplegeek `tr > td.subtext > span.subline > a.hnuser`
7 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
40 comments `tr > td.subtext > span.subline > a`
4. `tbody > tr#47633396 > td.title > span.rank`
894 points by firloop 17 hours ago \| hide \| 695 comments `tbody > tr > td.subtext > span.subline`
894 points `tr > td.subtext > span.subline > span#score_47633396`
firloop `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
695 comments `tr > td.subtext > span.subline > a`
5. `tbody > tr#47638810 > td.title > span.rank`
sebastianraschka.com `span.titleline > span.sitebit > a > span.sitestr`
26 points by MindGods 2 hours ago \| hide \| 2 comments `tbody > tr > td.subtext > span.subline`
26 points `tr > td.subtext > span.subline > span#score_47638810`
MindGods `tr > td.subtext > span.subline > a.hnuser`
2 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
2 comments `tr > td.subtext > span.subline > a`
6. `tbody > tr#47631118 > td.title > span.rank`
bbc.com `span.titleline > span.sitebit > a > span.sitestr`
907 points by andsoitis 20 hours ago \| hide \| 312 comments `tbody > tr > td.subtext > span.subline`
907 points `tr > td.subtext > span.subline > span#score_47631118`
andsoitis `tr > td.subtext > span.subline > a.hnuser`
20 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
312 comments `tr > td.subtext > span.subline > a`
7. `tbody > tr#47639567 > td.title > span.rank`
github.com/teamchong `span.titleline > span.sitebit > a > span.sitestr`
11 points by teamchong 1 hour ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
11 points `tr > td.subtext > span.subline > span#score_47639567`
teamchong `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
8. `tbody > tr#47601194 > td.title > span.rank`
dbreunig.com `span.titleline > span.sitebit > a > span.sitestr`
84 points by dbreunig 6 hours ago \| hide \| 31 comments `tbody > tr > td.subtext > span.subline`
84 points `tr > td.subtext > span.subline > span#score_47601194`
dbreunig `tr > td.subtext > span.subline > a.hnuser`
6 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
31 comments `tr > td.subtext > span.subline > a`
9. `tbody > tr#47633855 > td.title > span.rank`
mtlynch.io `span.titleline > span.sitebit > a > span.sitestr`
199 points by eichin 16 hours ago \| hide \| 120 comments `tbody > tr > td.subtext > span.subline`
199 points `tr > td.subtext > span.subline > span#score_47633855`
eichin `tr > td.subtext > span.subline > a.hnuser`
16 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
120 comments `tr > td.subtext > span.subline > a`
10. `tbody > tr#47597366 > td.title > span.rank`
woman-of-letters.com `span.titleline > span.sitebit > a > span.sitestr`
56 points by Caiero 8 hours ago \| hide \| 20 comments `tbody > tr > td.subtext > span.subline`
56 points `tr > td.subtext > span.subline > span#score_47597366`
Caiero `tr > td.subtext > span.subline > a.hnuser`
8 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
20 comments `tr > td.subtext > span.subline > a`
11. `tbody > tr#47606244 > td.title > span.rank`
24 points by maziyar 3 hours ago \| hide \| 7 comments `tbody > tr > td.subtext > span.subline`
24 points `tr > td.subtext > span.subline > span#score_47606244`
maziyar `tr > td.subtext > span.subline > a.hnuser`
3 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
7 comments `tr > td.subtext > span.subline > a`
12. `tbody > tr#47638270 > td.title > span.rank`
ycombinator.com `span.titleline > span.sitebit > a > span.sitestr`
4 hours ago `tr > td.subtext > span.age > a`
hide `tbody > tr > td.subtext > a`
13. `tbody > tr#47629433 > td.title > span.rank`
inaturalist.org `span.titleline > span.sitebit > a > span.sitestr`
491 points by bookofjoe 22 hours ago \| hide \| 115 comments `tbody > tr > td.subtext > span.subline`
491 points `tr > td.subtext > span.subline > span#score_47629433`
bookofjoe `tr > td.subtext > span.subline > a.hnuser`
22 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
115 comments `tr > td.subtext > span.subline > a`
14. `tbody > tr#47628608 > td.title > span.rank`
nist.gov `span.titleline > span.sitebit > a > span.sitestr`
469 points by kykeonaut 23 hours ago \| hide \| 220 comments `tbody > tr > td.subtext > span.subline`
469 points `tr > td.subtext > span.subline > span#score_47628608`
kykeonaut `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
220 comments `tr > td.subtext > span.subline > a`
15. `tbody > tr#47585469 > td.title > span.rank`
uwplse.org `span.titleline > span.sitebit > a > span.sitestr`
172 points by summarity 16 hours ago \| hide \| 33 comments `tbody > tr > td.subtext > span.subline`
172 points `tr > td.subtext > span.subline > span#score_47585469`
summarity `tr > td.subtext > span.subline > a.hnuser`
16 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
33 comments `tr > td.subtext > span.subline > a`
16. `tbody > tr#47639291 > td.title > span.rank`
iii.social `span.titleline > span.sitebit > a > span.sitestr`
5 points by freshman_dev 1 hour ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
5 points `tr > td.subtext > span.subline > span#score_47639291`
freshman_dev `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
17. `tbody > tr#47592068 > td.title > span.rank`
youtube.com `span.titleline > span.sitebit > a > span.sitestr`
31 points by DamnInteresting 5 hours ago \| hide \| 8 comments `tbody > tr > td.subtext > span.subline`
31 points `tr > td.subtext > span.subline > span#score_47592068`
DamnInteresting `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
8 comments `tr > td.subtext > span.subline > a`
18. `tbody > tr#47608604 > td.title > span.rank`
irregular.com `span.titleline > span.sitebit > a > span.sitestr`
5 points by zdw 2 hours ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
5 points `tr > td.subtext > span.subline > span#score_47608604`
zdw `tr > td.subtext > span.subline > a.hnuser`
2 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
19. `tbody > tr#47633131 > td.title > span.rank`
github.com/extv `span.titleline > span.sitebit > a > span.sitestr`
185 points by politelemon 17 hours ago \| hide \| 61 comments `tbody > tr > td.subtext > span.subline`
185 points `tr > td.subtext > span.subline > span#score_47633131`
politelemon `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
61 comments `tr > td.subtext > span.subline > a`
20. `tbody > tr#47601992 > td.title > span.rank`
nathanotterness.com `span.titleline > span.sitebit > a > span.sitestr`
18 points by michelangelo 5 hours ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
18 points `tr > td.subtext > span.subline > span#score_47601992`
michelangelo `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
21. `tbody > tr#47597159 > td.title > span.rank`
ounapuu.ee `span.titleline > span.sitebit > a > span.sitestr`
148 points by Fudgel 17 hours ago \| hide \| 155 comments `tbody > tr > td.subtext > span.subline`
148 points `tr > td.subtext > span.subline > span#score_47597159`
Fudgel `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
155 comments `tr > td.subtext > span.subline > a`
22. `tbody > tr#47618223 > td.title > span.rank`
mintlify.com `span.titleline > span.sitebit > a > span.sitestr`
362 points by denssumesh 23 hours ago \| hide \| 141 comments `tbody > tr > td.subtext > span.subline`
362 points `tr > td.subtext > span.subline > span#score_47618223`
denssumesh `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
141 comments `tr > td.subtext > span.subline > a`
23. `tbody > tr#47622616 > td.title > span.rank`
donotresearch.substack.com `span.titleline > span.sitebit > a > span.sitestr`
148 points by lazydogbrownfox 23 hours ago \| hide \| 113 comments `tbody > tr > td.subtext > span.subline`
148 points `tr > td.subtext > span.subline > span#score_47622616`
lazydogbrownfox `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
113 comments `tr > td.subtext > span.subline > a`
24. `tbody > tr#47586885 > td.title > span.rank`
patrickmccanna.net `span.titleline > span.sitebit > a > span.sitestr`
200 points by 0o_MrPatrick_o0 20 hours ago \| hide \| 52 comments `tbody > tr > td.subtext > span.subline`
200 points `tr > td.subtext > span.subline > span#score_47586885`
0o_MrPatrick_o0 `tr > td.subtext > span.subline > a.hnuser`
20 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
52 comments `tr > td.subtext > span.subline > a`
25. `tbody > tr#47629116 > td.title > span.rank`
tinygo.org `span.titleline > span.sitebit > a > span.sitestr`
184 points by uticus 23 hours ago \| hide \| 25 comments `tbody > tr > td.subtext > span.subline`
184 points `tr > td.subtext > span.subline > span#score_47629116`
uticus `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
25 comments `tr > td.subtext > span.subline > a`
26. `tbody > tr#47628326 > td.title > span.rank`
theguardian.com `span.titleline > span.sitebit > a > span.sitestr`
556 points by tjwds 1 day ago \| hide \| 1253 comments `tbody > tr > td.subtext > span.subline`
556 points `tr > td.subtext > span.subline > span#score_47628326`
tjwds `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1253 comments `tr > td.subtext > span.subline > a`
27. `tbody > tr#47639199 > td.title > span.rank`
nytimes.com `span.titleline > span.sitebit > a > span.sitestr`
12 points by planewave 1 hour ago \| hide \| 1 comment `tbody > tr > td.subtext > span.subline`
12 points `tr > td.subtext > span.subline > span#score_47639199`
planewave `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1 comment `tr > td.subtext > span.subline > a`
28. `tbody > tr#47639976 > td.title > span.rank`
dw.com `span.titleline > span.sitebit > a > span.sitestr`
12 points by L_226 27 minutes ago \| hide \| 1 comment `tbody > tr > td.subtext > span.subline`
12 points `tr > td.subtext > span.subline > span#score_47639976`
L_226 `tr > td.subtext > span.subline > a.hnuser`
27 minutes ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1 comment `tr > td.subtext > span.subline > a`
29. `tbody > tr#47626462 > td.title > span.rank`
hanshq.net `span.titleline > span.sitebit > a > span.sitestr`
106 points by jandeboevrie 1 day ago \| hide \| 115 comments `tbody > tr > td.subtext > span.subline`
106 points `tr > td.subtext > span.subline > span#score_47626462`
jandeboevrie `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
115 comments `tr > td.subtext > span.subline > a`
30. `tbody > tr#47627527 > td.title > span.rank`
jeffgeerling.com `span.titleline > span.sitebit > a > span.sitestr`
187 points by arjunbajaj 1 day ago \| hide \| 32 comments `tbody > tr > td.subtext > span.subline`
187 points `tr > td.subtext > span.subline > span#score_47627527`
arjunbajaj `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
32 comments `tr > td.subtext > span.subline > a`
Guidelines \| FAQ \| Lists \| API \| Security \| Legal \| Apply to YC \| Contact `tr > td > center > span.yclinks`
Search: `tr > td > center > form`

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Failing Elements
tr > td > a > img `tr > td > a > img`
tbody > tr#47638270 > td > img `tbody > tr#47638270 > td > img`
tbody > tr > td > img `tbody > tr > td > img`

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
td > center > form > input `td > center > form > input`

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.

Failing Elements
tbody > tr > td > a `tbody > tr > td > 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.

Failing Elements
Hacker News `td > span.pagetop > b.hnname > a`

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

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>`

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

●Document has a `<title>` element

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

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

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

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

●Identical links have the same purpose.

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

○`[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

○Buttons have an accessible name

○`<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

○Heading elements appear in a sequentially-descending order

○`<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

○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

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

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

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

○`[lang]` attributes have a valid value

○`<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.

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

Best Practices

Browser Compatibility

Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.

●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

●Serves images with appropriate resolution

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

○Detected JavaScript libraries

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.

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

Link destination	Link Text
news.ycombinator.com/?p=2	More

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Failing Elements
tr > td > a > img `tr > td > a > img`
tbody > tr#47638270 > td > img `tbody > tr#47638270 > td > img`
tbody > tr > td > img `tbody > tr > td > img`

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

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

100

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

216 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

216 ms

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

304 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

216 ms

Detailed Report

Audit breakdown by category with detailed findings.

100

Performance

Insights

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

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

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.

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.

URL	Transfer Size
news.ycombinator.com/news.css?eyaVsIDANOywtSpLPKI9	2.0 KiB

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

●Use efficient cache lifetimes

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Time to Interactive 0.2 s

●Max Potential First Input Delay 20 ms

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 11 KiB

●Minimizes main-thread work 0.1 s

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 60 ms

●Server Backend Latencies 0 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 70 ms

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○JavaScript execution time

○Avoid long main-thread tasks

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Failing Elements
1. `tbody > tr#47637757 > td.title > span.rank`
arxiv.org `span.titleline > span.sitebit > a > span.sitestr`
300 points by Anon84 5 hours ago \| hide \| 90 comments `tbody > tr > td.subtext > span.subline`
300 points `tr > td.subtext > span.subline > span#score_47637757`
Anon84 `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
90 comments `tr > td.subtext > span.subline > a`
2. `tbody > tr#47639524 > td.title > span.rank`
thetimes.com `span.titleline > span.sitebit > a > span.sitestr`
177 points by macleginn 1 hour ago \| hide \| 87 comments `tbody > tr > td.subtext > span.subline`
177 points `tr > td.subtext > span.subline > span#score_47639524`
macleginn `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
87 comments `tr > td.subtext > span.subline > a`
3. `tbody > tr#47637287 > td.title > span.rank`
wyounas.com `span.titleline > span.sitebit > a > span.sitestr`
138 points by simplegeek 7 hours ago \| hide \| 40 comments `tbody > tr > td.subtext > span.subline`
138 points `tr > td.subtext > span.subline > span#score_47637287`
simplegeek `tr > td.subtext > span.subline > a.hnuser`
7 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
40 comments `tr > td.subtext > span.subline > a`
4. `tbody > tr#47633396 > td.title > span.rank`
894 points by firloop 17 hours ago \| hide \| 695 comments `tbody > tr > td.subtext > span.subline`
894 points `tr > td.subtext > span.subline > span#score_47633396`
firloop `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
695 comments `tr > td.subtext > span.subline > a`
5. `tbody > tr#47638810 > td.title > span.rank`
sebastianraschka.com `span.titleline > span.sitebit > a > span.sitestr`
26 points by MindGods 2 hours ago \| hide \| 2 comments `tbody > tr > td.subtext > span.subline`
26 points `tr > td.subtext > span.subline > span#score_47638810`
MindGods `tr > td.subtext > span.subline > a.hnuser`
2 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
2 comments `tr > td.subtext > span.subline > a`
6. `tbody > tr#47631118 > td.title > span.rank`
bbc.com `span.titleline > span.sitebit > a > span.sitestr`
907 points by andsoitis 20 hours ago \| hide \| 312 comments `tbody > tr > td.subtext > span.subline`
907 points `tr > td.subtext > span.subline > span#score_47631118`
andsoitis `tr > td.subtext > span.subline > a.hnuser`
20 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
312 comments `tr > td.subtext > span.subline > a`
7. `tbody > tr#47639567 > td.title > span.rank`
github.com/teamchong `span.titleline > span.sitebit > a > span.sitestr`
11 points by teamchong 1 hour ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
11 points `tr > td.subtext > span.subline > span#score_47639567`
teamchong `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
8. `tbody > tr#47601194 > td.title > span.rank`
dbreunig.com `span.titleline > span.sitebit > a > span.sitestr`
84 points by dbreunig 6 hours ago \| hide \| 31 comments `tbody > tr > td.subtext > span.subline`
84 points `tr > td.subtext > span.subline > span#score_47601194`
dbreunig `tr > td.subtext > span.subline > a.hnuser`
6 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
31 comments `tr > td.subtext > span.subline > a`
9. `tbody > tr#47633855 > td.title > span.rank`
mtlynch.io `span.titleline > span.sitebit > a > span.sitestr`
199 points by eichin 16 hours ago \| hide \| 120 comments `tbody > tr > td.subtext > span.subline`
199 points `tr > td.subtext > span.subline > span#score_47633855`
eichin `tr > td.subtext > span.subline > a.hnuser`
16 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
120 comments `tr > td.subtext > span.subline > a`
10. `tbody > tr#47597366 > td.title > span.rank`
woman-of-letters.com `span.titleline > span.sitebit > a > span.sitestr`
56 points by Caiero 8 hours ago \| hide \| 20 comments `tbody > tr > td.subtext > span.subline`
56 points `tr > td.subtext > span.subline > span#score_47597366`
Caiero `tr > td.subtext > span.subline > a.hnuser`
8 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
20 comments `tr > td.subtext > span.subline > a`
11. `tbody > tr#47606244 > td.title > span.rank`
24 points by maziyar 3 hours ago \| hide \| 7 comments `tbody > tr > td.subtext > span.subline`
24 points `tr > td.subtext > span.subline > span#score_47606244`
maziyar `tr > td.subtext > span.subline > a.hnuser`
3 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
7 comments `tr > td.subtext > span.subline > a`
12. `tbody > tr#47638270 > td.title > span.rank`
ycombinator.com `span.titleline > span.sitebit > a > span.sitestr`
4 hours ago `tr > td.subtext > span.age > a`
hide `tbody > tr > td.subtext > a`
13. `tbody > tr#47629433 > td.title > span.rank`
inaturalist.org `span.titleline > span.sitebit > a > span.sitestr`
491 points by bookofjoe 22 hours ago \| hide \| 115 comments `tbody > tr > td.subtext > span.subline`
491 points `tr > td.subtext > span.subline > span#score_47629433`
bookofjoe `tr > td.subtext > span.subline > a.hnuser`
22 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
115 comments `tr > td.subtext > span.subline > a`
14. `tbody > tr#47628608 > td.title > span.rank`
nist.gov `span.titleline > span.sitebit > a > span.sitestr`
469 points by kykeonaut 23 hours ago \| hide \| 220 comments `tbody > tr > td.subtext > span.subline`
469 points `tr > td.subtext > span.subline > span#score_47628608`
kykeonaut `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
220 comments `tr > td.subtext > span.subline > a`
15. `tbody > tr#47585469 > td.title > span.rank`
uwplse.org `span.titleline > span.sitebit > a > span.sitestr`
172 points by summarity 16 hours ago \| hide \| 33 comments `tbody > tr > td.subtext > span.subline`
172 points `tr > td.subtext > span.subline > span#score_47585469`
summarity `tr > td.subtext > span.subline > a.hnuser`
16 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
33 comments `tr > td.subtext > span.subline > a`
16. `tbody > tr#47639291 > td.title > span.rank`
iii.social `span.titleline > span.sitebit > a > span.sitestr`
5 points by freshman_dev 1 hour ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
5 points `tr > td.subtext > span.subline > span#score_47639291`
freshman_dev `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
17. `tbody > tr#47592068 > td.title > span.rank`
youtube.com `span.titleline > span.sitebit > a > span.sitestr`
31 points by DamnInteresting 5 hours ago \| hide \| 8 comments `tbody > tr > td.subtext > span.subline`
31 points `tr > td.subtext > span.subline > span#score_47592068`
DamnInteresting `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
8 comments `tr > td.subtext > span.subline > a`
18. `tbody > tr#47608604 > td.title > span.rank`
irregular.com `span.titleline > span.sitebit > a > span.sitestr`
5 points by zdw 2 hours ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
5 points `tr > td.subtext > span.subline > span#score_47608604`
zdw `tr > td.subtext > span.subline > a.hnuser`
2 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
19. `tbody > tr#47633131 > td.title > span.rank`
github.com/extv `span.titleline > span.sitebit > a > span.sitestr`
185 points by politelemon 17 hours ago \| hide \| 61 comments `tbody > tr > td.subtext > span.subline`
185 points `tr > td.subtext > span.subline > span#score_47633131`
politelemon `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
61 comments `tr > td.subtext > span.subline > a`
20. `tbody > tr#47601992 > td.title > span.rank`
nathanotterness.com `span.titleline > span.sitebit > a > span.sitestr`
18 points by michelangelo 5 hours ago \| hide \| discuss `tbody > tr > td.subtext > span.subline`
18 points `tr > td.subtext > span.subline > span#score_47601992`
michelangelo `tr > td.subtext > span.subline > a.hnuser`
5 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
discuss `tr > td.subtext > span.subline > a`
21. `tbody > tr#47597159 > td.title > span.rank`
ounapuu.ee `span.titleline > span.sitebit > a > span.sitestr`
148 points by Fudgel 17 hours ago \| hide \| 155 comments `tbody > tr > td.subtext > span.subline`
148 points `tr > td.subtext > span.subline > span#score_47597159`
Fudgel `tr > td.subtext > span.subline > a.hnuser`
17 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
155 comments `tr > td.subtext > span.subline > a`
22. `tbody > tr#47618223 > td.title > span.rank`
mintlify.com `span.titleline > span.sitebit > a > span.sitestr`
362 points by denssumesh 23 hours ago \| hide \| 141 comments `tbody > tr > td.subtext > span.subline`
362 points `tr > td.subtext > span.subline > span#score_47618223`
denssumesh `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
141 comments `tr > td.subtext > span.subline > a`
23. `tbody > tr#47622616 > td.title > span.rank`
donotresearch.substack.com `span.titleline > span.sitebit > a > span.sitestr`
148 points by lazydogbrownfox 23 hours ago \| hide \| 113 comments `tbody > tr > td.subtext > span.subline`
148 points `tr > td.subtext > span.subline > span#score_47622616`
lazydogbrownfox `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
113 comments `tr > td.subtext > span.subline > a`
24. `tbody > tr#47586885 > td.title > span.rank`
patrickmccanna.net `span.titleline > span.sitebit > a > span.sitestr`
200 points by 0o_MrPatrick_o0 20 hours ago \| hide \| 52 comments `tbody > tr > td.subtext > span.subline`
200 points `tr > td.subtext > span.subline > span#score_47586885`
0o_MrPatrick_o0 `tr > td.subtext > span.subline > a.hnuser`
20 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
52 comments `tr > td.subtext > span.subline > a`
25. `tbody > tr#47629116 > td.title > span.rank`
tinygo.org `span.titleline > span.sitebit > a > span.sitestr`
184 points by uticus 23 hours ago \| hide \| 25 comments `tbody > tr > td.subtext > span.subline`
184 points `tr > td.subtext > span.subline > span#score_47629116`
uticus `tr > td.subtext > span.subline > a.hnuser`
23 hours ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
25 comments `tr > td.subtext > span.subline > a`
26. `tbody > tr#47628326 > td.title > span.rank`
theguardian.com `span.titleline > span.sitebit > a > span.sitestr`
556 points by tjwds 1 day ago \| hide \| 1253 comments `tbody > tr > td.subtext > span.subline`
556 points `tr > td.subtext > span.subline > span#score_47628326`
tjwds `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1253 comments `tr > td.subtext > span.subline > a`
27. `tbody > tr#47639199 > td.title > span.rank`
nytimes.com `span.titleline > span.sitebit > a > span.sitestr`
12 points by planewave 1 hour ago \| hide \| 1 comment `tbody > tr > td.subtext > span.subline`
12 points `tr > td.subtext > span.subline > span#score_47639199`
planewave `tr > td.subtext > span.subline > a.hnuser`
1 hour ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1 comment `tr > td.subtext > span.subline > a`
28. `tbody > tr#47639976 > td.title > span.rank`
dw.com `span.titleline > span.sitebit > a > span.sitestr`
12 points by L_226 27 minutes ago \| hide \| 1 comment `tbody > tr > td.subtext > span.subline`
12 points `tr > td.subtext > span.subline > span#score_47639976`
L_226 `tr > td.subtext > span.subline > a.hnuser`
27 minutes ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
1 comment `tr > td.subtext > span.subline > a`
29. `tbody > tr#47626462 > td.title > span.rank`
hanshq.net `span.titleline > span.sitebit > a > span.sitestr`
106 points by jandeboevrie 1 day ago \| hide \| 115 comments `tbody > tr > td.subtext > span.subline`
106 points `tr > td.subtext > span.subline > span#score_47626462`
jandeboevrie `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
115 comments `tr > td.subtext > span.subline > a`
30. `tbody > tr#47627527 > td.title > span.rank`
jeffgeerling.com `span.titleline > span.sitebit > a > span.sitestr`
187 points by arjunbajaj 1 day ago \| hide \| 32 comments `tbody > tr > td.subtext > span.subline`
187 points `tr > td.subtext > span.subline > span#score_47627527`
arjunbajaj `tr > td.subtext > span.subline > a.hnuser`
1 day ago `td.subtext > span.subline > span.age > a`
hide `tr > td.subtext > span.subline > a`
32 comments `tr > td.subtext > span.subline > a`
Guidelines \| FAQ \| Lists \| API \| Security \| Legal \| Apply to YC \| Contact `tr > td > center > span.yclinks`
Search: `tr > td > center > form`

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Failing Elements
tr > td > a > img `tr > td > a > img`
tbody > tr#47638270 > td > img `tbody > tr#47638270 > td > img`
tbody > tr > td > img `tbody > tr > td > img`

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
td > center > form > input `td > center > form > input`

Failing Elements
tbody > tr > td > a `tbody > tr > td > 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.

Failing Elements
tr#47637757 > td.votelinks > center > a#up_47637757 `tr#47637757 > td.votelinks > center > a#up_47637757`
tr#47639524 > td.votelinks > center > a#up_47639524 `tr#47639524 > td.votelinks > center > a#up_47639524`
tr#47637287 > td.votelinks > center > a#up_47637287 `tr#47637287 > td.votelinks > center > a#up_47637287`
tr#47633396 > td.votelinks > center > a#up_47633396 `tr#47633396 > td.votelinks > center > a#up_47633396`
tr#47638810 > td.votelinks > center > a#up_47638810 `tr#47638810 > td.votelinks > center > a#up_47638810`
tr#47631118 > td.votelinks > center > a#up_47631118 `tr#47631118 > td.votelinks > center > a#up_47631118`
tr#47639567 > td.votelinks > center > a#up_47639567 `tr#47639567 > td.votelinks > center > a#up_47639567`
tr#47601194 > td.votelinks > center > a#up_47601194 `tr#47601194 > td.votelinks > center > a#up_47601194`
tr#47633855 > td.votelinks > center > a#up_47633855 `tr#47633855 > td.votelinks > center > a#up_47633855`
tr#47597366 > td.votelinks > center > a#up_47597366 `tr#47597366 > td.votelinks > center > a#up_47597366`
tr#47606244 > td.votelinks > center > a#up_47606244 `tr#47606244 > td.votelinks > center > a#up_47606244`
Training mRNA Language Models Across 25 Species for $165 `tr#47606244 > td.title > span.titleline > a`
tr#47629433 > td.votelinks > center > a#up_47629433 `tr#47629433 > td.votelinks > center > a#up_47629433`
tr#47628608 > td.votelinks > center > a#up_47628608 `tr#47628608 > td.votelinks > center > a#up_47628608`
tr#47585469 > td.votelinks > center > a#up_47585469 `tr#47585469 > td.votelinks > center > a#up_47585469`
tr#47639291 > td.votelinks > center > a#up_47639291 `tr#47639291 > td.votelinks > center > a#up_47639291`
tr#47592068 > td.votelinks > center > a#up_47592068 `tr#47592068 > td.votelinks > center > a#up_47592068`
tr#47608604 > td.votelinks > center > a#up_47608604 `tr#47608604 > td.votelinks > center > a#up_47608604`
tr#47633131 > td.votelinks > center > a#up_47633131 `tr#47633131 > td.votelinks > center > a#up_47633131`
tr#47601992 > td.votelinks > center > a#up_47601992 `tr#47601992 > td.votelinks > center > a#up_47601992`
tr#47597159 > td.votelinks > center > a#up_47597159 `tr#47597159 > td.votelinks > center > a#up_47597159`
tr#47618223 > td.votelinks > center > a#up_47618223 `tr#47618223 > td.votelinks > center > a#up_47618223`
tr#47622616 > td.votelinks > center > a#up_47622616 `tr#47622616 > td.votelinks > center > a#up_47622616`
tr#47586885 > td.votelinks > center > a#up_47586885 `tr#47586885 > td.votelinks > center > a#up_47586885`
tr#47629116 > td.votelinks > center > a#up_47629116 `tr#47629116 > td.votelinks > center > a#up_47629116`
tr#47628326 > td.votelinks > center > a#up_47628326 `tr#47628326 > td.votelinks > center > a#up_47628326`
tr#47639199 > td.votelinks > center > a#up_47639199 `tr#47639199 > td.votelinks > center > a#up_47639199`
tr#47639976 > td.votelinks > center > a#up_47639976 `tr#47639976 > td.votelinks > center > a#up_47639976`
tr#47626462 > td.votelinks > center > a#up_47626462 `tr#47626462 > td.votelinks > center > a#up_47626462`
tr#47627527 > td.votelinks > center > a#up_47627527 `tr#47627527 > td.votelinks > center > a#up_47627527`

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

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>`

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

●Document has a `<title>` element

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

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

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

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

●Identical links have the same purpose.

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

○`[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

○Buttons have an accessible name

○`<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

○Heading elements appear in a sequentially-descending order

○`<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

○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

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

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

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

○`[lang]` attributes have a valid value

○`<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.

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

Best Practices

Browser Compatibility

Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.

●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

●Serves images with appropriate resolution

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

○Detected JavaScript libraries

SEO

Content Best Practices

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

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

Link destination	Link Text
news.ycombinator.com/?p=2	More

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Failing Elements
tr > td > a > img `tr > td > a > img`
tbody > tr#47638270 > td > img `tbody > tr#47638270 > td > img`
tbody > tr > td > img `tbody > tr > td > img`

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

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Results for https://news.ycombinator.com

Site Health

Top Priorities (5)

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Accessibility

Contrast

Names and labels

Best practices

Best Practices

Browser Compatibility

SEO

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Accessibility

Contrast

Names and labels

Best practices

Best Practices

Browser Compatibility

SEO

Content Best Practices

Keyboard Shortcuts