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Results for https://www.clickhouse.com

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Spain Spain · Madrid Completed: Apr 7, 2026 20:35 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C75

Site Health

Score: 75 / 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)

1

Content-Security-Policy header is missing

Security › Security Headers
2

No Content-Security-Policy header found

Security › Content Security Policy
3

Page weighs 19.3 MB (4.1 MB transferred)

Performance › Page Weight Budget
4

4 button(s) with no accessible text

Accessibility › Link & Button Quality
5

61 link(s) with no accessible text

Accessibility › Link & Button Quality
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<a href="https://beavercheck.com/results/de54cda5-a794-dad0-996d-c9276f33d8eb"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.clickhouse.com" alt="BeaverCheck Score"></a>
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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

39
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

2.66 s

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

16.47 s

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

1.31 s

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

0.005

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

7.49 s

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

24.80 s

Detailed Report

Audit breakdown by category with detailed findings.

39

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.

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

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2110 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff270 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff265 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:34.924 source:map[column:482 line:1 type:source-location url:https://clickhouse.com/_next/static/chunks/5440-6e13b0ad92d9502b.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:59.689 source:map[type:text value:[unattributed]]] map[reflowTime:19.242 source:map[column:34340 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:34.738 source:map[column:83078 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:5.424 source:map[column:54527 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:6.302 source:map[column:55056 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:1.436 source:map[column:32151 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/5476-99dbe543dc31cd21.js urlProvider:network]] map[reflowTime:35.403 source:map[column:15312 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/pages/index-328dbbf6dc8f0762.js urlProvider:network]] map[reflowTime:0.132 source:map[column:32257 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/5476-99dbe543dc31cd21.js urlProvider:network]] map[reflowTime:1.546 source:map[column:47925 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:3.771 source:map[column:414591 line:0 type:source-location url:https://cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js urlProvider:network]]]

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
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

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js0.0 ms112.1 KiB
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js0.0 ms30.3 KiB
i.ytimg.com/vi/z5t3b3EAc84/sddefault.jpg7200.0 s24.6 KiB
i.ytimg.com/vi/DWkuhCBA7B4/sddefault.jpg7200.0 s20.8 KiB
cdn-prod.securiti.ai/consent/cookie-consent-latest.css0.0 ms11.1 KiB
i.ytimg.com/vi_webp/SrLKbzdFEWA/sddefault.webp7200.0 s12.6 KiB
cdn.cr-relay.com/v1/site/56cd5a2c-528f-44aa-8175-7aad9d06854a/signals.js3600.0 s7.2 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-loader-strict-csp.js0.0 ms5.5 KiB
/rs/238-FPC-317/images/securiti-cookie-banner.js?version=060.0 s2.4 KiB
analytics.ahrefs.com/analytics.js14400.0 s3.0 KiB
clickhouse.com/logos/langfuse.svg259200.0 s7.3 KiB
clickhouse.com/uploads/block_logo_black_min_2f6978c0c1.svg604800.0 s14.4 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
clickhouse.com/uploads/poolside_1c835dc37f.svg604800.0 s9.8 KiB
clickhouse.com/bg-grid.svg259200.0 s4.6 KiB
clickhouse.com/uploads/cognitiv_94d115644c.svg604800.0 s8.8 KiB
clickhouse.com/uploads/langchain_logo_1_1e23793e69.svg604800.0 s8.4 KiB
clickhouse.com/uploads/character_3a9027ce90_4085d9ac89.svg604800.0 s8.0 KiB
clickhouse.com/uploads/rea_logo_830fcadc53_d4251b9a35.svg604800.0 s7.8 KiB
clickhouse.com/uploads/rbc_logo_4aaac37282.svg604800.0 s7.4 KiB
clickhouse.com/uploads/shopee_logo_1_f68ba1df69.svg604800.0 s7.2 KiB
clickhouse.com/uploads/trusted_by_cloudflare_74f4bc587e.svg604800.0 s7.1 KiB
clickhouse.com/uploads/teckion_logo_1_13bcd52b4b.svg604800.0 s7.0 KiB
clickhouse.com/uploads/trusted_by_sony_2117ab6ef9.svg604800.0 s6.9 KiB
clickhouse.com/uploads/Trip_com_logo_1_4cd2a2bf27.svg604800.0 s6.8 KiB
clickhouse.com/uploads/nansen_946382124a.svg604800.0 s6.8 KiB
clickhouse.com/uploads/trusted_by_contentsquare_bfc3a95c9e.svg604800.0 s6.2 KiB
clickhouse.com/uploads/trusted_by_spotify_32c0f01d76.svg604800.0 s6.2 KiB
clickhouse.com/uploads/trusted_by_hubspot_9f26e263c1.svg604800.0 s5.9 KiB
clickhouse.com/uploads/instacart_logo_1_ef7bb3b645.svg604800.0 s5.8 KiB
clickhouse.com/uploads/commonroom_logo_f48efdb4bb.svg604800.0 s5.7 KiB
clickhouse.com/uploads/trusted_by_statsig_041ca89e1e.svg604800.0 s5.7 KiB
clickhouse.com/uploads/sierra_321b705206.svg604800.0 s5.6 KiB
clickhouse.com/uploads/whatnot_b6c297442a.svg604800.0 s5.6 KiB
clickhouse.com/uploads/meta_9f582e8e5f.svg604800.0 s5.6 KiB
clickhouse.com/uploads/trusted_by_microsoft_e9aa6af7ab.svg604800.0 s5.5 KiB
clickhouse.com/uploads/prefect_logo_42849dddbe.svg604800.0 s5.3 KiB
clickhouse.com/uploads/trusted_by_nginx_8a94641c8c.svg604800.0 s5.2 KiB
clickhouse.com/uploads/trusted_by_cisco_f3dc337b62.svg604800.0 s5.2 KiB
clickhouse.com/uploads/cursor_136f34ab68.svg604800.0 s5.0 KiB
clickhouse.com/uploads/anthropic_small_a6ab486d34.svg604800.0 s5.0 KiB
clickhouse.com/uploads/trusted_by_rokt_66bd8a7f52.svg604800.0 s5.0 KiB
clickhouse.com/uploads/poizon_c9aa5431c5_fc90e5bbf0.svg604800.0 s4.9 KiB
clickhouse.com/uploads/vercel_fa4c139b66.svg604800.0 s4.9 KiB
clickhouse.com/uploads/trusted_by_ebay_7dd3883842.svg604800.0 s4.8 KiB
clickhouse.com/uploads/ramp_1db2955d50.svg604800.0 s4.7 KiB
clickhouse.com/uploads/didi_e12c39680b.svg604800.0 s4.7 KiB
clickhouse.com/uploads/trusted_by_lyft_596cb8757f.svg604800.0 s4.6 KiB
/consent/styles/8555e54b-cd0b-45d7-9c1c-e9e088bf774a/e058...86400.0 s1.2 KiB

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

URLResource SizeEst Savings
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-anthro...93.7 KiB92.8 KiB
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-lyft.6...89.2 KiB88.3 KiB
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-tesla....86.3 KiB85.4 KiB

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

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

TTI

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

Estimated savings: 805 ms
URLTime Spent
www.clickhouse.com/805 ms
clickhouse.com/0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Estimated savings: 300 ms 31.3 KiB
URLTransfer SizeEst Savings
clickhouse.com/_next/static/css/8056784763bff130.css34.8 KiB31.3 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Estimated savings: 3.9 s 984.1 KiB
URLTransfer SizeEst Savings
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js393.7 KiB296.7 KiB
clickhouse.com/_next/static/chunks/937-b0e6597368c6d53f.js181.5 KiB141.1 KiB
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js253.1 KiB135.9 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js111.5 KiB84.4 KiB
clickhouse.com/gtmwksrxs8s/?id=GTM-WKSRXS8S167.8 KiB72.7 KiB
clickhouse.com/_next/static/chunks/fec483df-91a51f18f1588b11.js99.4 KiB70.3 KiB
clickhouse.com/_next/static/chunks/pages/index-328dbbf6dc8f0762.js92.1 KiB65.5 KiB
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460184.2 KiB64.5 KiB
clickhouse.com/_next/static/chunks/framework-7b9e6922c3bd411b.js65.5 KiB29.8 KiB
clickhouse.com/_next/static/chunks/1069-fc3a90bdc7399e87.js25.7 KiB23.2 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

URLTotal CPU TimeScript EvaluationScript Parse
clickhouse.com/3.2 s26 ms1.2 ms
clickhouse.com/_next/static/chunks/framework-7b9e6922c3bd411b.js1.2 s740 ms63 ms
Unattributable1.2 s87 ms0.0 ms
clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js513 ms158 ms8.9 ms
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js448 ms294 ms137 ms
clickhouse.com/_next/static/chunks/main-640004828a30dcfe.js402 ms363 ms9.9 ms
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460400 ms250 ms46 ms
clickhouse.com/gtmwksrxs8s/?id=GTM-WKSRXS8S316 ms245 ms59 ms
clickhouse.com/_next/static/chunks/pages/index-328dbbf6dc8f0762.js230 ms210 ms20 ms
clickhouse.com/_next/static/chunks/5440-6e13b0ad92d9502b.js151 ms3.1 ms7.8 ms
cdn-prod.securiti.ai/consent/cookie-consent-sdk-loader-strict-csp.js142 ms97 ms1.2 ms
www.youtube.com/s/player/57fefa84/www-widgetapi.vflset/www-widgetapi.js126 ms114 ms2.7 ms
x.clearbitjs.com/v2/pk_25c26e54fda4158b4189447198378375/tracking.min.js96 ms75 ms14 ms
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js95 ms3.0 ms91 ms
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js91 ms19 ms69 ms
clickhouse.com/_next/static/chunks/webpack-fbd2b4f354c6d32f.js52 ms50 ms0.7 ms
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js51 ms48 ms2.3 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

CategoryTime Spent
Script Evaluation3.0 s
Other2.9 s
Style & Layout1.8 s
Rendering723 ms
Script Parsing & Compilation611 ms
Parse HTML & CSS80 ms
Garbage Collection29 ms

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URLTransfer Size
www.youtube-nocookie.com/s/player/57fefa84/player_embed_es6.vflset/en_US/base.js433.2 KiB
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js397.2 KiB
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js256.7 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...207.3 KiB
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460184.5 KiB
clickhouse.com/gtmwksrxs8s/?id=GTM-WKSRXS8S168.1 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...130.4 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js112.1 KiB
clickhouse.com/_next/static/chunks/fec483df-91a51f18f1588b11.js103.3 KiB
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-anthro...97.8 KiB

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 21 user timings
●Avoid long main-thread tasks 19 long tasks found
●Avoid non-composited animations 20 animated elements found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 170 ms
●Server Backend Latencies 490 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 110 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○LCP request discovery
92

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.

Names and labels

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 how to make buttons more accessible.

Failing Elements
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div#getting_started > div.mx-auto > pre.relative > button.absolute div#getting_started > div.mx-auto > pre.relative > button.absolute

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
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
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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.

○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-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○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
○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
○`<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">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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.
○`[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
○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.
92

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

SourceDescription
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js
Connecting to 'https://api.unifyintent.com/analytics/v1/page' violates the following Content Security Policy directive: "connect-src 'self' https://ads-twitter.com https://analytics.twitter.com https://bam.nr-data.net https://px.ads.linkedin.com https://api.unifyintent.com/analytics/v1/* https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://pagead2.googlesyndication.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://www.google.com https://google.com https://*.algolia.io https://*.algolia.net https://*.algolianet.com https://hn.algolia.com https://cdn.ampproject.org https://cdn.linkedin.oribi.io https://cdn.plyr.io https://cdn.segment.com https://*.clickhouse.com https://clickhouse.com https://*.clickhouse.cloud https://clickhouse.cloud https://*.clickhouse-dev.com https://clickhouse-dev.com https://*.clickhouse-staging.com https://clickhouse-staging.com wss://js.driftt.com wss://widget.drift.com https://app.clearbit.com https://app.clearbit.io https://app.securiti.ai https://cdn-prod.securiti.ai https://cookie-cdn.cookiepro.com https://geolocation.onetrust.com https://privacyportal.cookiepro.com https://api.github.com https://www.google.com https://cdn.growthbook.io https://boards-api.greenhouse.io https://ipinfo.io https://kapa-widget-proxy-la7dkmplpq-uc.a.run.app/proxy/ https://*.mktoresp.com https://*.mktoutil.com https://noembed.com https://yoast.com https://events.redditmedia.com https://pixel.redditmedia.com https://pixel-config.reddit.com https://conversions-config.reddit.com https://www.reddit.com https://www.redditstatic.com https://analytics.ahrefs.com https://*.ingest.sentry.io https://api.segment.io https://api.segment.io/v1/ https://cdn.segment.com/v1/projects/dZuEnmCPmWqDuSEzCvLUSBBRt8Xrh2el/settings https://cdn.segment.com/v1/projects/pYKX60InlEzX6aI1NeyVhSF3pAIRj4Xo/settings https://cdn.segment.com/analytics-next/bundles/* https://cdn.segment.com/next-integrations/integrations/* wss://api.segment.io https://api.vimeo.com https://vimeo.com https://api.cr-relay.com". The action has been blocked.
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js
Fetch API cannot load https://api.unifyintent.com/analytics/v1/page. Refused to connect because it violates the document's Content Security Policy.
cdn.cr-relay.com/v1/site/56cd5a2c-528f-44aa-8175-7aad9d06854a/signals.js
Loading the script 'https://cdn.vector.co/pixel.js' violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://googleads.g.doubleclick.net https://static.ads-twitter.com https://tag.unifyintent.com https://*.googletagmanager.com https://www.googleadservices.com https://www.google.com https://www.googletagmanager.com https://pagead2.googlesyndication.com https://googleads.g.doubleclick.net https://*.algolia.io https://*.algolia.net https://*.algolianet.com https://ajax.cloudflare.com https://buttons.github.io https://cdnjs.cloudflare.com https://cdn.ampproject.org https://cdn.cr-relay.com https://cdn.redocly.com https://cdn.segment.com https://static.cloudflareinsights.com https://yastatic.net https://app.clearbit.io https://marketo.clearbit.com https://tag.clearbitscripts.com https://x.clearbitjs.com https://discover.clickhouse.com https://js.driftt.com https://widget.drift.com https://connect.facebook.net https://www.google.com https://www.googletagmanager.com https://www.gstatic.com https://boards.greenhouse.io https://widget.kapa.ai https://munchkin.marketo.net https://bam.nr-data.net https://js-agent.newrelic.com https://conversions-config.reddit.com https://pixel-config.reddit.com https://www.redditstatic.com https://analytics.ahrefs.com https://cdn-prod.securiti.ai https://cookie-cdn.cookiepro.com https://embed.lu.ma https://platform.twitter.com https://js.stripe.com https://player.vimeo.com https://www.youtube.com https://snap.licdn.com". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback. The action has been blocked.

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Issue type
Content security policy

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 about source maps.

URL
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js
●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
●Page has the HTML doctype
●Properly defines charset
●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
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

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.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

947 ms

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

5.30 s

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

108 ms

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

0.069

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

1.98 s

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

5.67 s

Detailed Report

Audit breakdown by category with detailed findings.

70

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.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js0.0 ms112.1 KiB
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js0.0 ms30.3 KiB
i.ytimg.com/vi/z5t3b3EAc84/sddefault.jpg7200.0 s24.6 KiB
i.ytimg.com/vi/DWkuhCBA7B4/sddefault.jpg7200.0 s20.8 KiB
cdn-prod.securiti.ai/consent/cookie-consent-latest.css0.0 ms11.1 KiB
i.ytimg.com/vi_webp/SrLKbzdFEWA/sddefault.webp7200.0 s12.6 KiB
clickhouse.com/images/nav/icon-langfuse.svg259200.0 s30.4 KiB
cdn.cr-relay.com/v1/site/56cd5a2c-528f-44aa-8175-7aad9d06854a/signals.js3600.0 s7.2 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-loader-strict-csp.js0.0 ms5.5 KiB
clickhouse.com/images/nav/icon-chdb.svg259200.0 s15.8 KiB
/rs/238-FPC-317/images/securiti-cookie-banner.js?version=060.0 s2.4 KiB
analytics.ahrefs.com/analytics.js14400.0 s3.0 KiB
clickhouse.com/logos/langfuse.svg259200.0 s7.3 KiB
clickhouse.com/uploads/block_logo_black_min_2f6978c0c1.svg604800.0 s14.4 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
clickhouse.com/images/nav/icon-postgres.svg259200.0 s5.0 KiB
clickhouse.com/images/nav/icon-clickhouse.svg259200.0 s4.9 KiB
clickhouse.com/uploads/poolside_1c835dc37f.svg604800.0 s9.8 KiB
clickhouse.com/images/nav/icon-agentic-data-stack.svg259200.0 s4.9 KiB
clickhouse.com/images/nav/icon-clickhouse-cloud.svg259200.0 s4.6 KiB
clickhouse.com/images/nav/icon-byoc.svg259200.0 s4.6 KiB
clickhouse.com/bg-grid.svg259200.0 s4.6 KiB
clickhouse.com/uploads/langchain_logo_1_1e23793e69.svg604800.0 s9.0 KiB
clickhouse.com/images/nav/icon-managed-clickstack.svg259200.0 s4.5 KiB
clickhouse.com/images/nav/icon-clickstack.svg259200.0 s4.4 KiB
clickhouse.com/uploads/cognitiv_94d115644c.svg604800.0 s8.8 KiB
clickhouse.com/uploads/character_3a9027ce90_4085d9ac89.svg604800.0 s8.0 KiB
clickhouse.com/uploads/rea_logo_830fcadc53_d4251b9a35.svg604800.0 s7.8 KiB
clickhouse.com/uploads/rbc_logo_4aaac37282.svg604800.0 s7.4 KiB
clickhouse.com/uploads/Trip_com_logo_1_4cd2a2bf27.svg604800.0 s7.4 KiB
clickhouse.com/uploads/shopee_logo_1_f68ba1df69.svg604800.0 s7.2 KiB
clickhouse.com/uploads/upollo_1_5b302120ad.svg604800.0 s6.9 KiB
clickhouse.com/uploads/trusted_by_trackingplan_5b83d6c4cd.svg604800.0 s6.8 KiB
clickhouse.com/uploads/nansen_946382124a.svg604800.0 s6.8 KiB
clickhouse.com/uploads/teckion_logo_1_13bcd52b4b.svg604800.0 s6.7 KiB
clickhouse.com/uploads/trusted_by_sony_2117ab6ef9.svg604800.0 s6.7 KiB
clickhouse.com/uploads/astonomer_d6b1876f31_606414fa24.svg604800.0 s6.3 KiB
clickhouse.com/uploads/trusted_by_contentsquare_bfc3a95c9e.svg604800.0 s6.2 KiB
clickhouse.com/uploads/trusted_by_spotify_32c0f01d76.svg604800.0 s6.2 KiB
clickhouse.com/uploads/trusted_by_hubspot_9f26e263c1.svg604800.0 s5.9 KiB
clickhouse.com/uploads/trusted_by_fisker_86170377b2.svg604800.0 s5.8 KiB
clickhouse.com/uploads/instacart_logo_1_ef7bb3b645.svg604800.0 s5.8 KiB
clickhouse.com/uploads/trusted_by_adevinta_534745a01e.svg604800.0 s5.7 KiB
clickhouse.com/uploads/sierra_321b705206.svg604800.0 s5.6 KiB
clickhouse.com/uploads/trusted_by_statsig_041ca89e1e.svg604800.0 s5.6 KiB
clickhouse.com/uploads/fastly_carousel_be77939630.svg604800.0 s5.6 KiB
clickhouse.com/uploads/meta_9f582e8e5f.svg604800.0 s5.5 KiB
clickhouse.com/uploads/trusted_by_microsoft_e9aa6af7ab.svg604800.0 s5.5 KiB
clickhouse.com/uploads/trusted_by_gitlab_2c2904bdb2.svg604800.0 s5.4 KiB
clickhouse.com/uploads/whatnot_b6c297442a.svg604800.0 s5.4 KiB
clickhouse.com/uploads/prefect_logo_42849dddbe.svg604800.0 s5.3 KiB
clickhouse.com/uploads/corsearch_logo_b67fc34ee9.svg604800.0 s5.3 KiB
clickhouse.com/uploads/trusted_by_cisco_f3dc337b62.svg604800.0 s5.2 KiB
clickhouse.com/uploads/cursor_136f34ab68.svg604800.0 s5.0 KiB
clickhouse.com/uploads/anthropic_small_a6ab486d34.svg604800.0 s5.0 KiB
clickhouse.com/uploads/poizon_c9aa5431c5_fc90e5bbf0.svg604800.0 s4.9 KiB
clickhouse.com/uploads/vercel_fa4c139b66.svg604800.0 s4.9 KiB
clickhouse.com/uploads/trusted_by_ibm_21b6e36895.svg604800.0 s4.8 KiB
clickhouse.com/uploads/trusted_by_ebay_7dd3883842.svg604800.0 s4.8 KiB
clickhouse.com/uploads/ramp_1db2955d50.svg604800.0 s4.7 KiB
clickhouse.com/uploads/trusted_by_rokt_66bd8a7f52.svg604800.0 s4.7 KiB
clickhouse.com/uploads/didi_e12c39680b.svg604800.0 s4.7 KiB
clickhouse.com/uploads/trusted_by_lyft_596cb8757f.svg604800.0 s4.6 KiB
/consent/styles/8555e54b-cd0b-45d7-9c1c-e9e088bf774a/e058...86400.0 s1.2 KiB

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

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff250 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff245 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff245 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:35.76 source:map[column:197 line:1016 type:source-location url:https://clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460h1 urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:143.507 source:map[type:text value:[unattributed]]] map[reflowTime:0.614 source:map[column:32257 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/5476-99dbe543dc31cd21.js urlProvider:network]] map[reflowTime:25.058 source:map[column:15312 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/pages/index-328dbbf6dc8f0762.js urlProvider:network]] map[reflowTime:7.558 source:map[column:54527 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:2.681 source:map[column:34340 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:3.022 source:map[column:55056 line:0 type:source-location url:https://clickhouse.com/_next/static/chunks/3012-7ca6a1b5ca3849ba.js urlProvider:network]] map[reflowTime:35.76 source:map[column:376 line:967 type:source-location url:https://clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460h1 urlProvider:network]] map[reflowTime:2.567 source:map[column:23 line:207 type:source-location url:https://www.youtube.com/s/player/2430d1b0/www-widgetapi.vflset/www-widgetapi.js urlProvider:network]]]

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
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

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

URLResource SizeEst Savings
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-anthro...41.0 KiB36.8 KiB
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-lyft.6...39.3 KiB35.2 KiB
Video Thumbnail div.flip-selection > div.relative > div.absolute > img.absolute
/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fthumb-tesla....37.9 KiB33.5 KiB

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

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

Estimated savings: 271 ms
URLTime Spent
www.clickhouse.com/271 ms
clickhouse.com/0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Estimated savings: 870 ms 983.1 KiB
URLTransfer SizeEst Savings
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js393.5 KiB295.6 KiB
clickhouse.com/_next/static/chunks/937-b0e6597368c6d53f.js181.5 KiB141.1 KiB
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js252.9 KiB135.8 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js111.5 KiB84.3 KiB
clickhouse.com/gtmwksrxs8s/?id=GTM-WKSRXS8S167.8 KiB73.2 KiB
clickhouse.com/_next/static/chunks/fec483df-91a51f18f1588b11.js99.3 KiB70.2 KiB
clickhouse.com/_next/static/chunks/pages/index-328dbbf6dc8f0762.js92.0 KiB65.4 KiB
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460h1184.1 KiB64.2 KiB
clickhouse.com/_next/static/chunks/framework-7b9e6922c3bd411b.js65.4 KiB29.8 KiB
clickhouse.com/_next/static/chunks/1069-fc3a90bdc7399e87.js25.7 KiB23.4 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

CategoryTime Spent
Other777 ms
Script Evaluation694 ms
Style & Layout478 ms
Script Parsing & Compilation156 ms
Rendering120 ms
Garbage Collection27 ms
Parse HTML & CSS18 ms

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Estimated savings: 0.0 ms 39.9 KiB
URLTransfer SizeEst Savings
clickhouse.com/_next/static/css/8056784763bff130.css34.8 KiB29.8 KiB
cdn-prod.securiti.ai/consent/cookie-consent-latest.css10.5 KiB10.0 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URLTransfer Size
www.youtube-nocookie.com/s/player/57fefa84/player_embed_es6.vflset/en_US/base.js432.9 KiB
www.youtube-nocookie.com/s/player/2430d1b0/player_embed_es6.vflset/en_US/base.js432.7 KiB
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js397.5 KiB
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js257.0 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...207.3 KiB
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460h1184.5 KiB
clickhouse.com/gtmwksrxs8s/?id=GTM-WKSRXS8S168.1 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...130.4 KiB
cdn-prod.securiti.ai/consent/cookie-consent-sdk-strict-csp-latest.js112.1 KiB
clickhouse.com/_next/static/chunks/fec483df-91a51f18f1588b11.js103.3 KiB

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 21 user timings
●JavaScript execution time 0.6 s
●Avoid long main-thread tasks 4 long tasks found
●Avoid non-composited animations 45 animated elements found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 180 ms
●Server Backend Latencies 500 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 90 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○LCP request discovery
92

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.

Names and labels

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 how to make buttons more accessible.

Failing Elements
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton
div#getting_started > div.mx-auto > pre.relative > button.absolute div#getting_started > div.mx-auto > pre.relative > button.absolute

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
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline

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.

○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-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○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
○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
○`<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">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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.
○`[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
○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.
92

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

SourceDescription
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js
Connecting to 'https://api.unifyintent.com/analytics/v1/page' violates the following Content Security Policy directive: "connect-src 'self' https://ads-twitter.com https://analytics.twitter.com https://bam.nr-data.net https://px.ads.linkedin.com https://api.unifyintent.com/analytics/v1/* https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://pagead2.googlesyndication.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://www.google.com https://google.com https://*.algolia.io https://*.algolia.net https://*.algolianet.com https://hn.algolia.com https://cdn.ampproject.org https://cdn.linkedin.oribi.io https://cdn.plyr.io https://cdn.segment.com https://*.clickhouse.com https://clickhouse.com https://*.clickhouse.cloud https://clickhouse.cloud https://*.clickhouse-dev.com https://clickhouse-dev.com https://*.clickhouse-staging.com https://clickhouse-staging.com wss://js.driftt.com wss://widget.drift.com https://app.clearbit.com https://app.clearbit.io https://app.securiti.ai https://cdn-prod.securiti.ai https://cookie-cdn.cookiepro.com https://geolocation.onetrust.com https://privacyportal.cookiepro.com https://api.github.com https://www.google.com https://cdn.growthbook.io https://boards-api.greenhouse.io https://ipinfo.io https://kapa-widget-proxy-la7dkmplpq-uc.a.run.app/proxy/ https://*.mktoresp.com https://*.mktoutil.com https://noembed.com https://yoast.com https://events.redditmedia.com https://pixel.redditmedia.com https://pixel-config.reddit.com https://conversions-config.reddit.com https://www.reddit.com https://www.redditstatic.com https://analytics.ahrefs.com https://*.ingest.sentry.io https://api.segment.io https://api.segment.io/v1/ https://cdn.segment.com/v1/projects/dZuEnmCPmWqDuSEzCvLUSBBRt8Xrh2el/settings https://cdn.segment.com/v1/projects/pYKX60InlEzX6aI1NeyVhSF3pAIRj4Xo/settings https://cdn.segment.com/analytics-next/bundles/* https://cdn.segment.com/next-integrations/integrations/* wss://api.segment.io https://api.vimeo.com https://vimeo.com https://api.cr-relay.com". The action has been blocked.
tag.unifyintent.com/v1/Kvb8Nh2ik6bt5cXqP3RXWC/script.js
Fetch API cannot load https://api.unifyintent.com/analytics/v1/page. Refused to connect because it violates the document's Content Security Policy.
cdn.cr-relay.com/v1/site/56cd5a2c-528f-44aa-8175-7aad9d06854a/signals.js
Loading the script 'https://cdn.vector.co/pixel.js' violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://googleads.g.doubleclick.net https://static.ads-twitter.com https://tag.unifyintent.com https://*.googletagmanager.com https://www.googleadservices.com https://www.google.com https://www.googletagmanager.com https://pagead2.googlesyndication.com https://googleads.g.doubleclick.net https://*.algolia.io https://*.algolia.net https://*.algolianet.com https://ajax.cloudflare.com https://buttons.github.io https://cdnjs.cloudflare.com https://cdn.ampproject.org https://cdn.cr-relay.com https://cdn.redocly.com https://cdn.segment.com https://static.cloudflareinsights.com https://yastatic.net https://app.clearbit.io https://marketo.clearbit.com https://tag.clearbitscripts.com https://x.clearbitjs.com https://discover.clickhouse.com https://js.driftt.com https://widget.drift.com https://connect.facebook.net https://www.google.com https://www.googletagmanager.com https://www.gstatic.com https://boards.greenhouse.io https://widget.kapa.ai https://munchkin.marketo.net https://bam.nr-data.net https://js-agent.newrelic.com https://conversions-config.reddit.com https://pixel-config.reddit.com https://www.redditstatic.com https://analytics.ahrefs.com https://cdn-prod.securiti.ai https://cookie-cdn.cookiepro.com https://embed.lu.ma https://platform.twitter.com https://js.stripe.com https://player.vimeo.com https://www.youtube.com https://snap.licdn.com". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback. The action has been blocked.

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Issue type
Content security policy

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 about source maps.

URL
clickhouse.com/gtmwksrxs8s/?id=G-KF1LLRTQ5Q&cx=c&gtm=4e6460h1
clickhouse.com/_next/static/chunks/pages/_app-a4eafd4565895685.js
clickhouse.com/_next/static/chunks/7799-f0a67ac3c7525c39.js
●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
●Page has the HTML doctype
●Properly defines charset
●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
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

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.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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