Website reputation report

qt.io

Last checked 1 day ago · Point-in-time assessment

● Evidence is limited

What is this website?

Public pages were observed on qt.io, but their subject was not confidently classified. The sampled pages were marked as English-language. Recurring page-metadata topics include development, software, software development.

No listed local patterns observedHomepage-only analysis is not a malware clearance. Read the scope and findings below.

65/100Safety Score
70%Evidence Confidence
Trust Radar evidence profile Eight evidence dimensions from zero to one hundred. Exact values surround the chart. Threat Intelligence55 Domain History0 Infrastructure95 Website Security79 Security Hygiene70 Transparency51 Reputation50 Operational Stability96
Trust RadarEight observed factors. Select one to inspect its evidence.

How to read this report

Safety Score evaluates observed signals. Evidence Confidence measures how complete, direct, fresh, and consistent those signals are.

No automated scan can guarantee that a website is safe.

Independent evidence brief

What we observed about qt.io

Updated Sep 30, 2026

The latest scan examined 10 public pages on qt.io. Website descriptions below come from the site itself. Registration, connection and threat findings were checked separately.

Purpose and visible content

On its homepage, the site says: All the essential Qt tools for all stages of Software Development Lifecycle: planning, design, development, testing, and deployment.

Registrar and domain history

A reliable creation date was not returned by the registration lookup. The report leaves domain age unverified rather than guessing.

Connection and hosting evidence

The checked homepage returned HTTP 200.

A valid TLS certificate was observed, expiring Nov 2, 2026.

Threat checks and score context

External malware-provider coverage was unavailable. The report does not treat this missing check as a clean result.

Safety Score: 65/100. Evidence Confidence: 70%. These measure different things.

Public content profile

Pages reviewed on qt.io

10 of up to 10 pages

We sampled public pages from this website to understand its subject and contact paths. The titles and short descriptions below come from the website itself. They are not endorsements or independent safety findings.

Qt | Tools for Each Stage of Software Development LifecycleAll the essential Qt tools for all stages of Software Development Lifecycle: planning, design, development, testing, and deployment. Contact Qt - Find Relevant Contact Information | Qt GroupWe are here to help with sales, support, trials, technical issues and more. Contact Qt Group and we will get back to you as soon as possible. Connect with Qt's Global Network of Partners - Find Your Local ExpertExplore Qt's extensive global partner network for development, training, and technology solutions. Find the right expertise for your software needs. Qt Offices | Find your Nearest Qt LocationQt offices are located worldwide in many major cities. Get in touch with us today! Qt Products: Cross-Platform Dev, Design and QA ToolsQt's products for building, designing and testing cross-platform apps: Qt framework, Design Studio, and Squish, Coco and Axivion quality tools. Try free or buy. Qt BlogExplore the Qt Blog for the latest insights on e.g. Qt Creator, your go-to source for cross-platform development tips and updates. Qt Newsroom - Press Releases, Stock Exchange & BlogView the latest press releases, updates and info coming from The Qt Company. Qt Technical Help for full software development cycleThe Qt Professional Services team can support you throughout your entire multi-platform software development project. Qt Support: Standard, Premium & Extended Support | Qt GroupResolve issues fast with Qt Support—Standard, Premium, Extended & Install. Get expert help and priority responses via the Qt Account Support Center. Qt | ソフトウェア開発ライフサイクルの各ステージに対応するフレームワークQtのツール群は、企画・設計・開発・テスト・展開まで、ソフトウェア開発ライフサイクル全体をサポート。クロスプラットフォームアプリケーションや組み込み機器の開発に必要な機能を網羅し、将来的な変更にも柔軟に対応。

Public page evidence

Topics and keywords observed on qt.io

12 phrases

These phrases were extracted locally from sampled public page metadata. They are observations, not search-volume or ranking estimates.

developmentTitle, Meta description4 sampled pages
softwareTitle, H1, Meta description3 sampled pages
software developmentTitle, Meta description2 sampled pages
platformTitle, H1, Meta description3 sampled pages
cross platformTitle, H1, Meta description2 sampled pages
groupTitle, H1, Meta description3 sampled pages
blogTitle, H1, Meta description2 sampled pages
toolsTitle, Meta description2 sampled pages
helpTitle, Meta description3 sampled pages
designTitle, Meta description2 sampled pages
expertTitle, Meta description2 sampled pages
technicalTitle, Meta description2 sampled pages

At a glance

Key findings

✓

Report is current

The displayed evidence comes from the published immutable scan.

i

Confidence is separate

Unavailable evidence is shown as missing and never counted as clean.

!

Verify before sensitive actions

Check the exact URL and context before payments, credentials, or downloads.

Fully explainable

Why this score?

Versioned weights
Threat IntelligenceWeight 25%
55/100

Threat providers were unavailable. The neutral uncertainty baseline is not a clean verdict.

Domain HistoryWeight 10%
0/100

Evidence is unavailable.

InfrastructureWeight 10%
95/100

Observed DNS records and network address were checked.

Website SecurityWeight 15%
79/100

Observed certificate validity and TLS protocol were checked.

Security HygieneWeight 15%
70/100

Observed security header values were checked for basic protective settings. Empty values, disabled HSTS and unrecognized values receive no credit. This is not a complete browser-policy validation.

TransparencyWeight 5%
51/100

Observed site metadata and About page were checked. Publisher-supplied details are not independently verified.

ReputationWeight 5%
50/100

Popularity is weak context, not proof of safety. Unranked sites use a neutral baseline.

Operational StabilityWeight 15%
96/100

Observed HTTP status and final connection scheme were checked.

Server-side analysis

Automated security checks

Local antivirus and phishing checks

ClamAV · homepage HTMLNo signature match in the sampled HTML
Engine version1.5.4
Signature database date (UTC)2026-09-30T06:24:18+00:00
HTML bytes submitted230,481
Phishing.Database · exact hostnameNot listed in this snapshot
Feed downloaded (UTC)2026-09-30T12:00:07+00:00
Hosts in local snapshot386,027

Sampled scripts and pages

Resource analysis incomplete

6 resources checked · 21 script links observed on the homepage. Partial resource coverage.

ClamAV inspects the fetched homepage HTML on our server. New scans also sample up to four linked scripts and two collected internal pages, with size and time limits. Scripts are not executed. Other downloads, private server files and logged-in pages remain outside this check. A signature match needs investigation and can be a false positive. No match is not a whole-site safety guarantee.

Exact hostname lookup uses a downloaded Phishing.Database snapshot. It does not send this domain to an external lookup API or mark sibling subdomains as harmful. Not listed does not mean safe. Snapshot age is download age, not proof that every entry was recently revalidated.

Homepage HTML only · Eight local rule families · local-security-v2

Checks use the fetched page and redirect chain. Scripts are not executed, forms are not submitted, and linked files are not downloaded. This is not a malware clearance.

Page resource inventory

Linked scripts21
Inline scripts9
Embedded frames1
External script hosts4

Counts describe the sampled HTML, not every resource loaded by the browser. External resources are common and are not automatically harmful.

No listed local patterns observed. The limited rule set cannot detect every threat or behavior.

External threat intelligence

Provider coverageNot checked

Local checks do not query external reputation databases. An unavailable check is never a clean result.

Registration

Domain information

Public RDAP observation
Canonical domainqt.io
RegistrarUnavailable
RegisteredUnavailable
Domain ageUnavailable
ExpiresUnavailable
Registry statusesUnavailable
Report statePublished

Infrastructure

Network & hosting

Observed endpoint, not legal location
IP address52.18.144.254
Autonomous systemUnavailable
Network organizationUnavailable
Observed countryUnavailable
CDNCloudflare
Web application firewallNot detected

At a glance

Infrastructure summary

Observed during this scan

A compact view of the connection, DNS and security surface. These observations describe what the scanner could verify at scan time and do not prove ownership or ongoing availability.

HTTP response200 · https://www.qt.io/
Endpoint52.18.144.254
NetworkUnavailable
CDN and WAFCloudflare · Not detected
DNS surface46 records · 3 nameservers · 1 mail exchangers
Protection signals5 security headers · 4 technologies · DNSSEC unknown

Page telemetry

Observed page statistics

Safe metadata only

These counters describe the fetched response and sampled HTML. Script counts describe references in the markup, not a complete browser network log. Cookie counts cover observed response headers.

Response size230,481 bytes
HTTP check duration0 ms
Cookies observed2
Script resources21 · 4 external hosts
Frames and sampled checks1 frames · 6 resources checked

Encrypted transport

TLS certificate

Valid when observed
StatusValid when observed
ProtocolTLSv1.2
IssuercountryName=US, organizationName=Let's Encrypt, commonName=YR1
Valid fromAug 4, 2026
Valid untilNov 2, 2026
Certificate namesqt.io

Resolution

DNS footprint

DNSKEY status unknown

DNSKEY presence does not verify the DNSSEC signature chain. Missing records can mean no record was returned or the lookup was unavailable.

A52.18.144.254TTL —
NSns-175-a.gandi.netTTL —
NSns-243-b.gandi.netTTL —
NSns-49-c.gandi.netTTL —
MX11 qt-io.mail.protection.outlook.comTTL —
TXT_globalsign-domain-verification=q5RLfWCh95w8kYvwqngllD0TliWS2SXZ_drzk1SxYbTTL —
TXT_hzw8eeg9uhc5xj936jv9ppo0ou0mj4mTTL —
TXT_uke11iecfkh76pdy9fvt1scsxjv5guzTTL —
CAA0 issue "amazon.com"TTL —
CAA0 issue "amazonaws.com"TTL —
CAA0 issue "amazontrust.com"TTL —
CAA0 issue "awstrust.com"TTL —
CAA0 issue "certainly.com"TTL —
CAA0 issue "digicert.com"TTL —
CAA0 issue "globalsign.com"TTL —
CAA0 issue "letsencrypt.org"TTL —
CAA0 issue "pki.goog"TTL —
CAA0 issue "sectigo.com"TTL —
CAA0 issuewild "digicert.com"TTL —
CAA0 issuewild "entrust.com"TTL —
CAA0 issuewild "globalsign.com"TTL —
CAA0 issuewild "pki.goog"TTL —
TXT99276D386FTTL —
TXTadobe-idp-site-verification=5a9d3918e132584ef70084471019760d1f5fb941fe9b3ddc4a77230d2ca07960TTL —
TXTanthropic-domain-verification-ch5kez=eYXhvn33RZy2cVDWORssUT311TTL —
TXTapple-domain-verification=GWcDIO9uyCe4GGpLTTL —
TXTarcules-domain-verification=92HOwpXQ4tbPBwDdib1idz8C7aQti4XGrIdVw6iaDQ3TTL —
TXTatlassian-domain-verification=i8pPqj4ggCz3/YBvj8DMzCG58lyu3fzsJPutfJTAkiaPAOQu08V0Ej8pZG2WRW7iTTL —
TXTatlassian-domain-verification=KRzg78ZwrC/vsGe46xjVujbUKgaktsrwFKVMEyxTJJDtHGMYpGxcHX/pSzOGfRIOTTL —
TXTatlassian-domain-verification=qOx2x54JGZLNHHWOtVunc0TVNvi5l7J5x8eunJ7Qo6Dd5RpvkaaX5Flb1DSjLGglTTL —
TXTatlassian-domain-verification=yYhrDkw8Rnnyok67W7yQhZpOtA6NL0Kie9/lt/IqUNx0PyL16BXO2Kr7vh3dKyzeTTL —
TXTbw=hR3GkePw0j1SPsYgU6F4JKXXIp2P39YapY8zrdhsWlPaTTL —
TXTd358f430575bfe0c07fe7d85e526cda4TTL —
TXTgoogle-site-verification=bIhnm2Ko3OmLAEP0Dqp0_aJNyJz9zj6KyJKAb1Lo-esTTL —
TXTgoogle-site-verification=d8jqwffKE2mRhvhJdZTPxD9XLjwpsYON51TAzNZZfx8TTL —
TXTgoogle-site-verification=dnHgPPxUI9getHLFrlO7Fpx8GY4Pd9230AELyJkvgNsTTL —
TXTgoogle-site-verification=x8WScTrJ9ix9wGVVMih54OmbjQlcTb93z1HWxVZSOKoTTL —
TXTgoogle-site-verification=XaLRKRce2ApHGZ6a8Q9VYSPgfygWOFbPYBRA8eE4ZvgTTL —
TXTheroku-domain-verification=0acrf/kb66cr7//nvtsxtsgd9y25ko9anug/jektuaTTL —
TXThpe-greenlake-domain-verification=52335378636f3149675a5679637a7863696c6e4469613136734f75616a6d6d4eTTL —
TXTmiro-verification=1c7af488d2ace09f31a534a1368692bc11edf243TTL —
TXTmongodb-site-verification=0qQyK8XwDiC6yjd0jk6jDkCbChQvLmgcTTL —
TXTMS=ms34905030TTL —
TXTnotion-domain-verification=qCDPyX8ObObGulBG5usj3nq0y8vs7oVr6JfFtVJ2qPKTTL —
TXTonetrust-domain-verification=27fb6526511f414991230f79866be4b6TTL —
TXTv=spf1 include:spf.protection.outlook.com ip4:217.11.52.118 ip4:109.75.234.198 ip4:109.75.234.204 include:spf.mandrillapp.com include:_spf.salesforce.com include:spf.recurly.com include:149513.spf07.hubspotemail.net include:spf.terranovasite.com -allTTL —

DNS observations · no external lookup API

Domain email protection

Exact-host SPF and DMARC observations help the owner investigate email impersonation risks. They are separate from website malware checks and do not change the Safety Score.

SPFDNS lookup unavailable
DMARCPolicy record observed, not fully validated

What to do next

Review the records with your mail administrator. Inventory legitimate senders and test SPF and DKIM alignment before enforcing a stricter DMARC policy. Fix duplicate records and investigate overly permissive SPF rules.

This bounded check does not send email, probe SMTP, evaluate recursive SPF includes, verify DKIM signatures or apply organizational-domain DMARC inheritance. A missing subdomain record does not prove that no inherited protection exists. A DNS timeout is unknown, not an absent record. A policy record is not proof that messages authenticate successfully.

Responsible disclosure

security.txt

RFC 9116 observation
StatusPublished and readable
Security contacts2
Policy linkObserved
ExpiryValid when observed

This is a public vulnerability-reporting contact file. Its presence does not prove that the website is safe and does not change the independent Safety Score.

Browser protections

Security headers

5 observed
content-security-policypresent upgrade-insecure-requests
permissions-policypresent geolocation=(), microphone=(self "https://app.qualified.com"), camera=(), payment=(self), usb=()
referrer-policypresent strict-origin-when-cross-origin
strict-transport-securitypresent max-age=31536000
x-content-type-optionspresent nosniff

Response headers

Cookie protections

Passive observation
Cookies observed2
Missing Secure0
Missing HttpOnly0
Missing SameSite0

Only cookie attribute counts are retained. Cookie names and values are never stored. These observations are not proof of compromise and do not independently change the Safety Score.

Detected stack

Technologies

Bootstrap 80% Cloudflare 98% Google Tag Manager 96% Tailwind CSS 72%

Versions are shown only when publicly exposed by the page or response headers. An observed version is not, by itself, proof of a vulnerability.

JavaScript library advisories

4 sampled JavaScript files checked locally with Retire.js. Database snapshot: 2026-09-30T02:40:06.930Z.

jquery 3.7.1 No known advisories matched this version in the database snapshot.

A version match is not proof that the website is infected or that an issue is exploitable here. Owners should review the advisory, check whether their code is affected and test an update. Up to four external script files are sampled, not every dependency, inline script or dynamically loaded resource.

Publisher supplied

Public contact details

These details were observed on the website, not independently verified as an active support channel.

Phone+358988618040Source: https://www.qt.io/contact-us
Emailpr@qt.ioSource: https://www.qt.io/contact-us
Emailpartners@qt.ioSource: https://www.qt.io/contact-us

Structured facts

Website identity & response

Public page metadata
Page titleQt | Tools for Each Stage of Software Development Lifecycle
First headingYour Software Excellence Begins Here
DescriptionAll the essential Qt tools for all stages of Software Development Lifecycle: planning, design, development, testing, and deployment.
Canonical URLhttps://www.qt.io
Final URLhttps://www.qt.io/
HTTP response200 · text/html; charset=UTF-8 · duration unavailable
Languageen
Structured typesOrganization · WebSite
Page page detectedhttps://www.qt.io/productsContact page detectedhttps://www.qt.io/contact-us
1100% evidence confidence
Dns consistency.cname present100% evidence confidence
unavailable100% evidence confidence
1100% evidence confidence
3100% evidence confidence
46100% evidence confidence
Local cookies.cookies missing httponly100% evidence confidence
Local cookies.cookies missing samesite100% evidence confidence
Local cookies.cookies missing secure100% evidence confidence
2100% evidence confidence
Local headers.cors credentials with wildcard100% evidence confidence
Local headers.cors present100% evidence confidence
Local headers.cors wildcard origin100% evidence confidence
Local headers.csp has default src100% evidence confidence
Local headers.csp has object src100% evidence confidence
1100% evidence confidence
Local headers.csp unsafe eval100% evidence confidence
Local headers.csp unsafe inline100% evidence confidence
Local headers.csp wildcard sources100% evidence confidence
Local headers.hsts include subdomains100% evidence confidence
31536000100% evidence confidence
Local headers.hsts preload100% evidence confidence
1100% evidence confidence
1100% evidence confidence
1100% evidence confidence
Local headers.permissions microphone restricted100% evidence confidence
Local headers.permissions payment restricted100% evidence confidence
1100% evidence confidence
1100% evidence confidence
1100% evidence confidence
en100% evidence confidence
1100% evidence confidence
2100% evidence confidence
1100% evidence confidence
1100% evidence confidence
1100% evidence confidence
present100% evidence confidence

Connection path

Redirect chain

1 recorded hops
Hop 1https://www.qt.io/

The chain is shown exactly as observed by the scanner. A redirect is not itself a malware finding, but unexpected domains or an HTTP downgrade deserve review.

Premium monitoring

Catch downtime and security changes automatically

Regular checks, availability history, and alert emails are reserved for Premium websites. Free reports remain point-in-time scans and do not create recurring server work.

Enable monitoring for this website

Compared with the previous scan

What changed

Safety ScoreNo comparable score
HTTP statusUnavailable → 200
Final URL changedYes
Technologies addedbootstrap, cloudflare, google-tag-manager, tailwind
Technologies removedNone observed

This comparison uses persisted scan evidence only. A changed signal can reflect a real website change, a different response or newly available evidence.

Explainable matching

Digital fingerprint

fingerprint-v1
azure-harbor-trace-314

Comparable components help find technically related websites. A match does not prove common ownership.

DnsHashed private comparison value
TechnologiesHashed private comparison value

Material changes only

Change history

No meaningful changes recorded yet.

Website icon for qt.io

Visual evidence

Website screenshot

Screenshot of qt.io
Captured once in an isolated browser during this scan. Visual tint is an interface overlay. The original evidence is not duplicated.

For site owners

Show your verified trust report

Place this lightweight badge in your footer to show visitors an independent, dated WebsiteVirusScanner report. It can increase visitor confidence, but it never changes or guarantees the score.

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WebsiteVirusScanner trust badge preview

Use the current report link so visitors can verify the evidence. A badge is a transparency signal, not a paid ranking boost.

Questions about qt.io

FAQ

Still have questions? Contact us →
Is qt.io safe to visit?

The latest Safety Score is 65/100 with 70% Evidence Confidence. This is a point-in-time assessment of observed technical signals, not a guarantee. Check the exact address and avoid entering payment details if anything looks unusual.

Did the scan detect malware on qt.io?

ClamAV found no signature match in the sampled homepage HTML. External scripts, downloads and private server files were not checked. This is not a whole-site malware clearance.

When was qt.io registered?

The registry lookup did not provide a reliable creation date in this scan.

Did qt.io have a valid TLS certificate?

The scanner observed a valid TLS certificate using TLSv1.2. A valid certificate alone does not establish that the site is safe.

Can a paid listing change this website's score?

No. Premium placement and owner-supplied pages are labelled separately. Technical evidence, the Safety Score and moderation decisions remain independent.