Free tool, no account required

Free Website Safety Checker: Threat Lookup

The Website Safety Checker is a threat-list lookup. It submits a URL to Google Safe Browsing and reports whether the address is currently listed for malware, phishing, unwanted software or potentially harmful applications.

Also known as: Safe Browsing check, malware and phishing lookup
Evidence shown with sourceNo account requiredNo invented metrics

Run a real check above

Submit a public URL, domain, or keyword. Novaverb will show only the evidence this tool can actually retrieve or measure.

Definition

What is a website safety checker?

A website safety checker is a tool that asks whether a URL appears on a list of known dangerous addresses. The Novaverb Website Safety Checker is a threat-list lookup: the submitted URL is checked against Google Safe Browsing and the current listing status is reported for malware, phishing, unwanted software and potentially harmful applications.

Scope

What does the website safety checker check?

The website safety checker checks one URL against the Safe Browsing threat lists for malware, phishing or social engineering, unwanted software and harmful applications. A match is reported with the category returned. The tool does not scan the page, files, database or server, so the answer is a listing status and nothing more.

Who it is for

Who is the website safety checker for?

The website safety checker is for site owners, agencies and support teams who need a listing status quickly. An owner who hears about a browser warning checks whether the URL is listed. An agency checks a client domain before taking it on. A team that cleaned a hacked site checks whether the listing has cleared.

Why it matters

Why use a website safety checker?

A website safety check shows a threat listing before it costs more visitors and trust. A Safe Browsing listing can trigger red browser warnings. A site can be listed because it was hacked, an ad network served malware or a third-party script was compromised, so the owner may not know until the status is looked up.

Method

How does the website safety checker work?

The website safety checker works as a single lookup. The address is normalized and the URL is submitted to the live Safe Browsing threat lists. Any match for malware, phishing, unwanted software or potentially harmful applications is reported by category. A result with no match is reported as no current listing, a present-tense state and not a permanent verdict.

  1. We normalize the address and submit the URL to Google Safe Browsing's live threat lists.
  2. We report any match for malware, phishing (social engineering), unwanted software or potentially harmful applications.
  3. We report a clean result as 'no current listing' - an honest present-tense state, not a permanent verdict.
Input

What do you enter into the website safety checker?

Enter the public URL or domain you want looked up into the website safety checker. A bare domain or a full page URL both work, with or without www, and an address without a scheme is treated as https. The lookup covers the URL as submitted. Hosts that are not publicly routable are refused.

Use it like this
yourdomain.comAny public address form works - we check it against Google's live threat lists. http or https, with or without www, a bare domain or a full path - we normalize it for you.
https://www.yourdomain.com/pageA specific URL is fine too; we check exactly what you submit.
Avoid this
Reading 'no threats' as 'safe forever'A clean result means no listing right now, not a permanent guarantee - re-check over time.
Result

What does the website safety checker report contain?

The website safety checker report contains a verdict banner, the checked URL and a category panel. A flagged result lists each active threat listing by name. A clean result reads no threats found and shows the categories checked. Both end with an evidence boundary stating that the status reflects the moment of the check.

Reading it

How do you read a website safety check result?

Read a website safety check result in the present tense. Flagged as unsafe means the URL currently matches one or more Safe Browsing threat lists, which is strong evidence the page is dangerous now. No threats found means no active listing was found at check time, and a compromised site can still be unlisted.

Website safety explained

What a Safe Browsing check does - and does not - prove

Safe Browsing maintains constantly-updated lists of URLs known to host malware, phishing, unwanted software or potentially harmful applications. A match is strong evidence a page is dangerous right now. The absence of a match means the URL isn't on those lists at this moment - it is not proof the site is clean, because new threats are listed only after they're detected.

The threat categories

  • Malware - pages that install malicious software on a visitor's device.
  • Social engineering - phishing pages that impersonate a trusted site to steal credentials.
  • Unwanted software - deceptive downloads that change browser or system behavior.
  • Harmful applications - apps flagged as harmful on mobile platforms.

If your site is flagged

A listing can appear because a site was hacked, an ad network served malware, or a third-party script was compromised. Remove the malicious content, then request a review - and monitor the status so you know the moment it clears.

Source

Where does the website safety checker get its data?

The website safety checker gets its data from a live Safe Browsing threat-list lookup. Google Safe Browsing maintains the lists and defines the categories, and the tool reports that answer without adding a judgment of its own. The lists are updated continuously in both directions, so a listing can be added or lifted.

Limits

What does the website safety checker not tell you?

The website safety checker does not tell you that a site is safe. A clean result means no active listing was found at the moment of the check. A lookup is not a full malware scan, and a threat list reports known threats only, so an infection nobody has detected yet returns the same clean result.

Evidence

What does a website safety check result prove?

A website safety check result proves whether the submitted URL currently matches the Safe Browsing threat lists. A match can be concluded as a present listing in the named category. A clean result cannot be read as a certificate, because a site can be compromised and not yet listed, and a listing can be lifted after cleanup.

1. Source

A live Safe Browsing threat-list lookup. The result identifies where its evidence came from.

2. Boundary

This reflects the Safe Browsing threat-list status at the moment you check. A clean result means no active listing was found - it is not a guarantee that a site is safe, nor a full malware scan.

3. Next action

Use the finding to verify a problem, then connect a workspace when you need history, monitoring, or site-wide analysis.

Standards

Which standards does the website safety checker apply?

The website safety checker applies a single rule set: the Google Safe Browsing threat lists, which define the malware, phishing, unwanted software and potentially harmful application categories reported. No separate scoring is layered on top. The present-tense wording of the result follows from how those lists work, since they record what is known now and are updated continuously.

GoogleSafe Browsing
Safe Browsing threat lists

Checks the URL against the malware, phishing, unwanted software and potentially harmful application threat lists.

Read the specification
We list a standard only where this tool genuinely reads or measures against it. Where a signal is outside a live check, the result says so instead of implying coverage.
Verification

How can you verify a website safety check result yourself?

Verify a website safety check result by running the lookup again for the same exact URL, then for the homepage and the affected page separately, since the check covers the URL submitted. For a site you own, review recent uploads, scripts and third-party code. Safe Browsing is the source, so its own published status is the reference.

Example

What does a typical website safety check finding look like?

A typical website safety check finding is a clean banner reading no threats found, with the checked URL beneath it and each category shown as checked. The other case is a flagged banner that names an active threat listing, phishing or social engineering for instance, which can follow a hacked site or a compromised third-party script.

Cost

Is the website safety checker free?

The website safety checker is free and no account is required for the lookup. An account is needed when a single lookup is not the goal: a workspace keeps the result as saved evidence and watches the Safe Browsing status of a connected site alongside SSL, security headers and uptime.

In a workspace

What does a Novaverb workspace add to the website safety checker?

A Novaverb workspace adds continuity to the website safety checker. Site Trust is the product that carries the job forward, described as a bounded scorecard for captured site trust signals, headers and supported external probes. A connected site keeps its evidence, is watched over time, and a flagged finding becomes a task that is rechecked.

Site Trust (site trust and security)

When to go further

When is a free website safety check not enough?

A free website safety check is not enough when the status has to be watched and not sampled. One lookup covers one URL at one moment. After a security incident, during a cleanup that awaits review, or on a site with many sections, recurring checks and a crawl of the whole site answer what a single lookup cannot.

Next step

What should you do after running the website safety checker?

After running the website safety checker, a flagged result calls for action in order. Identify and remove the malware, phishing pages or unwanted software. Clean any injected code and secure the compromised entry point. Request a review so the listing can be reassessed. After a clean result, keep software patched and run the lookup again periodically.

Related tools

The website safety checker pairs with free tools that read the site itself, which a threat-list lookup does not. The Website Security Checker reads the TLS certificate, security response headers and selected TCP ports. The WordPress Security Configuration Checker looks for exposed logs and sensitive paths on a WordPress origin. The Website Monitor runs a live availability check.

Website SEO CheckerHomepage status, indexability, title, headings and links from one live scan
Keyword Research ToolFree keyword research tool: monthly searches, cost per click, ad …
SERP CheckerFree SERP checker: the organic results for a keyword in …
Website Security CheckerFree website security checker: a limited outside check of a …
WordPress Security Configuration CheckerFree WordPress security checker: eight public configuration areas on a …
Server Response Time CheckerFree server response time checker: one live request from Germany, …
Backlink CheckerFree backlink checker: see the referring domains, link totals, follow …
Robots.txt CheckerFree robots.txt tester: fetch a site's live robots.txt and see …
Sitemap CheckerFree sitemap checker: find a site's XML sitemaps from robots.txt …
Meta Tag CheckerFree meta tag checker: a page's live title, meta description, …
HTTP Status & Redirect CheckerFree redirect checker: trace every hop of a URL's redirect …
Website MonitorFree website status checker: one live request to your address …
HTTP/2 TestFree HTTP/2 test: opens one live TLS connection to a …
HTTP/3 TestFree HTTP/3 test: attempts a real QUIC connection to a …
Website Performance TestFree website performance test: time one request to your URL …
GEO CheckerFree GEO checker: retrieve, quote, cite and graph signals from …
Core Web Vitals CheckerFree Core Web Vitals checker: real-user LCP, INP and CLS …
PageSpeed CheckerFree PageSpeed checker: a Lighthouse lab audit of a public …
Knowledge Graph CheckerFree Knowledge Graph checker: look up a brand or name …
Keyword Gap CheckerFree keyword gap analysis: keywords a competitor ranks for and …
Competitor Top PagesFree competitor top pages tool: a domain's leading pages by …
Questions

What do people ask about the website safety checker?

The website safety checker FAQ answers whether a clean result means a website is safe, how malware and phishing flags differ and why a site shows as flagged for unwanted software. Further questions cover how to fix a flagged site, whether the lookup is a full malware scan of a server and how current the result is.

What does the Website Safety Checker check?

It checks whether a URL is currently flagged on Google Safe Browsing threat lists for malware, phishing, unwanted software or potentially harmful applications, reporting the listing status at the moment you run the check.

Does a clean result mean my website is safe?

No. A clean result means no active Safe Browsing listing was found at check time. It is not a guarantee of safety nor a full malware scan, and status can change if a threat later appears.

What is the difference between malware and phishing flags?

A malware flag means the site is listed as distributing harmful software. A phishing flag means it is listed as deceptively collecting credentials or data. Both are Safe Browsing threat categories that can trigger browser warnings.

Why does my site show as flagged for unwanted software?

Safe Browsing lists unwanted software when a site distributes deceptive or harmful programs, such as bundled installers that change settings. Review recent uploads, scripts and third-party code, then request review once the issue is removed.

How do I fix a site flagged by Safe Browsing?

Identify and remove the malware, phishing pages or unwanted software, clean any injected code, secure the compromised entry point, then request a review through the appropriate console so the listing can be reassessed and lifted.

Is this a full malware scan of my server?

No. It reports Safe Browsing threat-list status at check time, not a deep scan of your files, database or server. A clean result does not rule out infections that have not been listed.

Why does website safety status matter for SEO?

A Safe Browsing listing can trigger red browser warnings and suppress your site in results, sharply cutting traffic and trust. Monitoring listing status helps you catch and resolve threats before they damage visibility.

Can a safe site later become flagged?

Yes. The check reflects status only at that moment. If your site is later compromised and added to a threat list, a previously clean result no longer holds. Re-check regularly, especially after security incidents.

What should I do if my site is clean but I still worry?

A clean listing is reassuring but limited. Keep software patched, restrict access, monitor for injected code, and re-run the check periodically, since Safe Browsing status can change the moment a new threat is detected.

How current is the Safe Browsing result?

The result reflects threat-list status at the time you run the check. Listings are added and removed as threats appear and are resolved, so treat each result as a point-in-time reading rather than permanent.

Check → understand → fix

Turn this check into a verified fix

Every Novaverb free tool is one funnel: run the check, understand the evidence, then fix it and prove it is resolved with a fresh re-check - no invented pass states.