How accurate is the score?

Every check is based on what Google and the AI providers document publicly, and title widths are measured in pixels the way Google displays them. The score is a guide to how well-prepared a page is – no tool can guarantee rankings, because Google also weighs links, competition and many other signals.

Do you store my website's content?

No. We fetch the page like a search engine would, analyse it and keep only the finished report in a short-lived cache for an hour so repeat views are fast.

Is there a limit on how many sites I can check?

Not for normal use. The instant tools run in your browser and are unlimited. Full checks and audits only have a safety limit set far above what a person can use by hand (two checks a minute, every minute), plus a cap on how often any one website can be checked – that stops bots using XKey to flood other people's sites.

Do I need to give my email address?

No. XKey never asks for an email, an account or card details – not even for weekly monitoring, which gives you a private link instead.

Can I download my SEO report without signing up?

Yes. Use "Print or save as PDF" at the bottom of any report. The website audit also gives you a PDF and a CSV of every page, with no sign-up.

Can I check a competitor's website?

Yes – any public website. To see your site and up to two competitors side by side, use the competitor comparison.

Why is my score different from other SEO checkers?

Each tool weights different checks. XKey gives extra weight to things that stop a page appearing at all (indexing, titles, H1) and adds AI search readiness, which most checkers don't measure yet.

SEO report: slack.com scores 78/100

Fix these first

Entity clarityhigh
No Organization / LocalBusiness structured data – search engines and AI have to guess who runs this site.
Fix: Add Organization or LocalBusiness JSON-LD with name, url, logo, contact details and sameAs links to your official profiles.
Make the code with the free local business schema generator
Read the guide: schema markup
See the details
JSON-LD present & validhigh
No JSON-LD structured data.
Fix: Add JSON-LD describing the business and the page (Organization/LocalBusiness, WebSite, WebPage or Article, BreadcrumbList).
Make valid code with the free schema generator
Read the guide: schema markup
See the details
Render-blocking resourceshigh
4 blocking script(s) and 8 stylesheet(s) in <head>.
Fix: Add defer to scripts, inline critical CSS and load the rest asynchronously.
Read the guide: Core Web Vitals
See the details
Question-led contentmedium
No headings phrased as questions.
Fix: Add headings that match real questions ("How much does…?") followed by a direct one- or two-sentence answer – an easy format for search and AI answers to quote.
Read the guide: how to write SEO content
See the details
Freshness signalsmedium
No published/updated date found.
Fix: Show a 'last updated' date and add dateModified to your structured data.
See the details
Scripts & third partiesmedium
31 script tag(s); files loaded from 4 other domain(s): a.slack-edge.com, cdn.cookielaw.org, reveal.clearbit.com, d34u8crftukxnk.cloudfront.net.
Fix: Remove unused tracking and widget scripts; every third party adds connection time.
Read the guide: Core Web Vitals
See the details
Imagesmedium
79 image(s).
Fix: Give every image width and height, lazy-load images below the fold (but not the main image) and serve WebP/AVIF.
Read the guide: image SEO
See the details
Tap-to-contactmedium
No tel: or mailto: links.
Fix: Add a tap-to-call or tap-to-email button so phone visitors can contact you instantly.
Read the guide: mobile-friendly websites
See the details

Check the whole website

This report covers one page. The full-site audit crawls up to 250 pages to find broken links, duplicate titles, orphan pages and more.

Run a full-site audit

Monitor this site weekly

We'll re-check it every week and track the score, with a history graph and a list of anything that breaks.

Compare with competitors

See how this page scores against up to two competitors, side by side, and where they beat you.

Compare sites

Real-world speed Google PageSpeed

Loading Core Web Vitals from Google… this can take up to 30 seconds.

Authority & backlinks

Looking up which websites link to slack.com…

Indexing & crawling 100%

Can search engines reach, read and index this page?

✓
Status codecritical
The page returned HTTP 200.
✓
Indexablecritical
No noindex instruction – the page can appear in search.
✓
robots.txthigh
robots.txt found.
Googlebot is allowed to crawl this page.
✓
XML sitemaphigh
Sitemap index found at https://slack.com/sitemap.xml listing 13 sitemaps.
Declared in robots.txt.
No lastmod dates – add accurate ones so search engines know what changed.
✓
Canonical URLhigh
Canonical: https://slack.com
Points to this page (self-referencing).
✓
Redirectshigh
Loads directly with no redirects.
✓
www / non-wwwmedium
www.slack.com redirects to slack.com.
✓
hreflangmedium
16 hreflang link(s).
All language codes are valid.

Content quality 90%

Is there enough clear, useful text that matches what the page targets?

✓
Word countmedium
1,209 words of main content (inside <main>).
Google has no minimum word count – this is a rough guide to whether the page answers the question in full.
✓
Readabilitymedium
Flesch reading ease 77 (plain English), about 9 words per sentence.
✓
Topic focushigh
4 of 4 title keywords appear in the main content.
✓
H1 headingcritical
“All your people and AI agents working together”
!
Heading structuremedium
36 headings for 1209 words – a lot for the amount of text.
Levels are in order.
Fix: Use H2s for main sections and H3s inside them, without skipping levels.
Read the guide: the on-page SEO checklist
!
Text-to-code ratiolow
5% of the HTML is visible text.
Fix: Trim unused markup, inline scripts and builder bloat.

AI search readiness 56%

Can ChatGPT, Claude, Perplexity and Google AI Overviews read, understand and cite this site?

✓
AI crawler accesshigh
Search and AI-search crawlers (Googlebot, Bingbot, OAI-SearchBot, Claude-SearchBot, PerplexityBot…) can read this page.
✓
Snippet controlshigh
No snippet restrictions – search and AI answers can quote this page.
✓
llms.txtlow
/llms.txt found.
✗
Question-led contentmedium
No headings phrased as questions.
Fix: Add headings that match real questions ("How much does…?") followed by a direct one- or two-sentence answer – an easy format for search and AI answers to quote.
Read the guide: how to write SEO content
✗
Entity clarityhigh
No Organization / LocalBusiness structured data – search engines and AI have to guess who runs this site.
Fix: Add Organization or LocalBusiness JSON-LD with name, url, logo, contact details and sameAs links to your official profiles.
Make the code with the free local business schema generator
Read the guide: schema markup
✗
Freshness signalsmedium
No published/updated date found.
Fix: Show a 'last updated' date and add dateModified to your structured data.
✓
Trust pages (E-E-A-T)medium
Links found to all three: about, contact and privacy.

Structured data 0%

Machine-readable facts for rich results and AI.

✗
JSON-LD present & validhigh
No JSON-LD structured data.
Fix: Add JSON-LD describing the business and the page (Organization/LocalBusiness, WebSite, WebPage or Article, BreadcrumbList).
Make valid code with the free schema generator
Read the guide: schema markup
i
Breadcrumbslow
Home page – breadcrumbs not needed.

Links 88%

Internal linking, anchor text and broken links.

✓
Internal linkinghigh
236 internal and 27 external links.
!
Anchor text qualitymedium
Same text used for different pages: “download slack”, “security”, “education”, “sign in”.
Fix: Make every link text describe its destination, e.g. “logo design prices” instead of “click here”.
Check every link's wording with the free anchor text checker
Read the guide: internal linking
✓
Broken links (sample)high
Checked 12 internal link(s).
No broken links found.
1 link(s) point to a redirect – link to the final address instead.

Performance 44%

Speed signals from the HTML and server. Real-user Core Web Vitals load below.

✓
Server response (TTFB)high
80 ms until the first response from our checker, including connection setup (Google rates TTFB good under 0.8 s, poor over 1.8 s).
!
HTML sizemedium
234 kB of HTML.
Fix: Remove inline bloat, base64 images and unused markup.
✓
Compressionmedium
Compressed with br.
✗
Render-blocking resourceshigh
4 blocking script(s) and 8 stylesheet(s) in <head>.
Fix: Add defer to scripts, inline critical CSS and load the rest asynchronously.
Read the guide: Core Web Vitals
✗
Scripts & third partiesmedium
31 script tag(s); files loaded from 4 other domain(s): a.slack-edge.com, cdn.cookielaw.org, reveal.clearbit.com, d34u8crftukxnk.cloudfront.net.
Fix: Remove unused tracking and widget scripts; every third party adds connection time.
Read the guide: Core Web Vitals
✗
Imagesmedium
79 image(s).
73 without width/height – can cause layout shift (CLS).
11 image(s) after the first three aren't lazy-loaded.
69 use WebP/AVIF or responsive srcset.
Fix: Give every image width and height, lazy-load images below the fold (but not the main image) and serve WebP/AVIF.
Read the guide: image SEO
✗
Cachinglow
No Cache-Control header.
Fix: Set Cache-Control so browsers and CDNs can reuse the page.
✓
HTTP/3low
Server advertises HTTP/3 (faster on mobile networks).

Security 92%

Visitor safety signals that browsers and Google check.

✓
HTTPScritical
Secure HTTPS with no mixed content.
✓
HTTP → HTTPS redirecthigh
http:// redirects to https://.
✓
HSTSmedium
HSTS: max-age=31536000; includeSubDomains; preload
✗
Security headerslow
Present: Referrer-Policy, clickjacking protection.
Fix: Add X-Content-Type-Options, Referrer-Policy, Permissions-Policy and X-Frame-Options (or a CSP).
Read the guide: the technical SEO checklist
✓
Server fingerprintlow
No X-Powered-By header (server: cloudflare).

Mobile & accessibility 80%

Usable on phones and by everyone – Google indexes the mobile version.

✓
Mobile viewportcritical
viewport: width=device-width, initial-scale=1
✓
Image alt textmedium
All 79 images have alt text.
✓
Link nameslow
Every link has a readable name.
✗
Tap-to-contactmedium
No tel: or mailto: links.
Fix: Add a tap-to-call or tap-to-email button so phone visitors can contact you instantly.
Read the guide: mobile-friendly websites

Local SEO not scored

This site doesn't look like a local business, so these checks are shown for information and not scored.

i
LocalBusiness markuphigh
No LocalBusiness structured data.
i
Contact details on pagemedium
No phone number found.
No postcode found (fine for service-area businesses).
i
Map & directionslow
No map or directions link.

This report checks one page. Scores are a guide, not a guarantee of rankings. Check another page · Print or save as PDF

SEO report for slack.com

Fix these first

Real-world speed Google PageSpeed

Authority & backlinks

Indexing & crawling 100%

Status codecritical

Indexablecritical

robots.txthigh

XML sitemaphigh

Canonical URLhigh

Redirectshigh

www / non-wwwmedium

hreflangmedium

Search snippet & sharing 88%

Title tagcritical

Meta descriptionhigh

Open Graph & social cardsmedium

Faviconlow

Languagelow

Content quality 90%

Word countmedium

Readabilitymedium

Topic focushigh

H1 headingcritical

Heading structuremedium

Text-to-code ratiolow

AI search readiness 56%

AI crawler accesshigh

Snippet controlshigh

llms.txtlow

Question-led contentmedium

Entity clarityhigh

Freshness signalsmedium

Trust pages (E-E-A-T)medium

Structured data 0%

JSON-LD present & validhigh

Breadcrumbslow

Links 88%

Internal linkinghigh

Anchor text qualitymedium

Broken links (sample)high

Performance 44%

Server response (TTFB)high

HTML sizemedium

Compressionmedium

Render-blocking resourceshigh

Scripts & third partiesmedium

Imagesmedium

Cachinglow

HTTP/3low

Security 92%

HTTPScritical

HTTP → HTTPS redirecthigh

HSTSmedium

Security headerslow

Server fingerprintlow

Mobile & accessibility 80%

Mobile viewportcritical

Image alt textmedium

Link nameslow

Tap-to-contactmedium

Local SEO not scored

LocalBusiness markuphigh

Contact details on pagemedium

Map & directionslow