Arte Sheets

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Practise spreadsheet skills in a real workbook. Ask AI for hints, check formulas with changed inputs, and review solutions together in Arte Sheets.

Education Estimated origin: Bulgaria Added 11 Nov 2026 Analysed 11 Nov 2026 via

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Screenshot of Arte Sheets

What we found

  1. Analytics set tracking cookies before any opt-in, and we found no consent manager.
  2. It sends four of the six security headers we check; missing are Permissions-Policy and Content-Security-Policy.
  3. The site is hosted on AWS S3 and served through AWS CloudFront, with a domain registered in 2018.
  4. It welcomes AI crawlers and publishes an llms.txt.

Built with: 8 technologies · Scale-up stack

Each technology links to its own page: which other new sites launched with it.

Site checks

Page basicsHow we check
Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Crawl files
robots.txt
sitemap.xml 3,273 URLs
security.txt optional
llms.txt
ads.txt only for ad-funded sites
humans.txt optional
AI crawlers WelcomedHow we check
llms.txt published
No AI bots blocked in robots.txt
Content-Signal none declared
Link headers none advertised

Email

StateRecordStatusWhat it does
SPF ~all Soft-fail (~all), common and accepted (from arte-soft.com) Lists the servers allowed to send email for the domain.
DMARC p=quarantine Quarantine (from arte-soft.com) Tells receivers what to do with email that fails SPF or DKIM.
DKIM Found (from arte-soft.com) Signs outgoing email. We check common selectors only, so a provider may use another.
MTA-STS Not deployed Stops email to the domain being downgraded to plain text in transit.
TLS-RPT Not configured Sends the owner reports of failed encrypted deliveries.

Hosting and network

Network AMAZON-02 - Amazon.com, Inc., US AS16509, US
DNS AWS Route 53 authoritative nameservers
DNSSEC Not enabled DNS answers are unsigned
Certificate Amazon valid 12 Oct 2026 to 27 Apr 2027, as captured
Domain age 8.7 years registered Mar 2018, Amazon Registrar, Inc.
Green hosting No record per The Green Web Foundation
Page build 1 JS file, 1 CSS file 2 third-party domains
Brand colours

Storage: 2 items

Cookies 2
NameLifetimeSet by
_ga1yGoogle Analytics
_ga_W8855W3V0F1yGoogle Analytics

Performance

MeasureThis siteReading
Server response 260 ms good, faster than 50% of sites
Largest contentful paint 400 ms good
Layout shift 0.00 good
Page weight 218 KB light
Third-party domains 2
Console errors 0 none
Failed requests 0 none

From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure

Notes

  1. Looks AI-built: no AI signals. How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
  2. Analytics set tracking cookies on our visit and no consent manager was detected. UK and EU GDPR require opt-in before tracking runs, and more than 20 US states require honouring opt-out requests.
  3. Performance comes from one render on 11 November 2026 and will vary between visits.

How we know

FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 11 November 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.

Spot a mistake? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.