You’ve probably hovered over a link in an email or text, wondering if it’s safe to click. That caution is smart: the Anti-Phishing Working Group reports phishing attacks increased by 40% in 2022, and Verizon’s 2023 Data Breach Investigations Report found that over 60% of breaches involve phishing. This article compares the best free link checker tools, explaining exactly what each one can—and cannot—tell you about a URL’s safety, so you can decide which tool (or combination) fits your needs.

4 related posts

VirusTotal engines: Dozens of antivirus engines ·
SecurityBot scan limit: 2,000 pages per scan ·
Mobily redirect resolution: Reveals final destination

Quick snapshot

1Confirmed facts
  • VirusTotal aggregates scans from dozens of antivirus engines (Guardio blog)
  • Mobily resolves redirect chains to show final URL (Mobily blog)
  • SecurityBot can crawl up to 2,000 pages per scan (SecurityBot blog)
2What’s unclear
  • Whether free link checkers store or share submitted URLs (privacy policies vary)
  • How often each tool updates its threat database
3Timeline signal
  • Phishing attacks up 40% year-over-year in 2022 (APWG report)
  • Browser security tools now provide real-time background protection (Guardio blog)
4What’s next
  • Mobily integrates with Google Safe Browsing for broad coverage (Mobily blog)
  • Using two tools for cross-validation recommended (Mobily blog)
Key facts about link safety tools
Fact Detail Source
VirusTotal antivirus engines Dozens Guardio blog
SecurityBot max crawl pages 2,000 per scan SecurityBot blog
Mobily redirect resolution Reveals final destination Mobily blog
Phishing growth (2022) 40% year-over-year APWG report
Phishing in breaches (2023) Over 60% of breaches Verizon DBIR 2023
Google Safe Browsing daily checks Billions of URLs Google transparency report

The pattern: each fact ties directly to a source, confirming the reliability of the data presented.

Is this link safe?

What does a link checker do?

  • A link checker scans a URL against threat databases to identify phishing, malware, and malicious redirects. Tools like VirusTotal pull results from dozens of antivirus engines (Guardio blog).
  • Browser security tools provide background protection without manual checks (Guardio blog).
  • Some tools, like URLScan.io, analyze page behavior, scripts, and network activity for deeper inspection (Guardio blog).
The upshot

Link checkers are only as good as their data sources. A clean result from one tool doesn’t guarantee safety, especially against zero-day threats that haven’t been reported yet.

Common signs of an unsafe link

  • Misspelled domain names (e.g., “g00gle.com” instead of “google.com”)
  • Unsolicited emails or messages with urgent calls to click
  • URLs that differ from the displayed link text (hover to check)
  • Requests for login credentials or personal information on landing pages

According to Verizon DBIR 2023, human error remains the top factor in phishing success — training your eye is the first defense. The pattern: most unsafe links try to create a false sense of urgency or trust.

The implication: recognizing these signs before scanning gives you a head start against phishing attempts.

Is this link safe on VirusTotal?

How VirusTotal scans work

  • VirusTotal submits a URL to multiple antivirus engines and reputation services and returns a summary of detections (Guardio blog).
  • It covers dozens of engines, making it one of the most comprehensive free scanners available.

Interpreting VirusTotal results

  • A “clean” result means no engine flagged the URL, but zero-day threats can slip through.
  • If one or two engines flag it, treat it as suspicious — false positives are possible, but rare for well-known sites.
  • VirusTotal also provides community comments and screenshots of the page context.
Bottom line: VirusTotal is the best cross‑engine scanner but not foolproof. Use it as a first check, then follow up with another tool if the link still seems suspect.

Is this link safe according to Google?

Google Safe Browsing explained

  • Google Safe Browsing checks URLs against a constantly updated list of unsafe sites (Google transparency report).
  • It protects over 4 billion devices daily by blocking access to known phishing and malware sites.

How to use Google’s transparency report

  • Visit the Google Transparency Report and paste a URL to see if it’s listed as unsafe.
  • The report shows the category of threat (phishing, malware, unwanted software) and the date last detected.
  • Mobily’s checker integrates with Google Safe Browsing for broader coverage (Mobily blog).

What this means: Google’s data is authoritative, but it only returns a binary safe/unsafe verdict. For nuanced analysis, combine it with a multi‑engine scanner like VirusTotal.

The catch: a binary verdict leaves no room for gray-area threats that might be missed by Google’s automated systems.

How can I check if a link is safe?

Step-by-step: Using a link checker tool

  1. Copy the suspicious URL from your browser, email, or messaging app.
  2. Open a link checker — for example, Mobily’s URL Safety Checker (free, no account required) or VirusTotal.
  3. Paste the URL into the tool’s input field and click “Check” or “Scan”.
  4. Review the report: if it shows “safe” or “clean”, the URL passed known threat databases.
  5. If the result is “malicious” or “suspicious”, do not click — proceed to delete the message or report it.

Mobily’s tool resolves redirect chains, showing you the final destination before you click (Mobily blog). This step alone can reveal masked phishing URLs.

Browser extensions for real-time protection

  • Extensions like Bitdefender TrafficLight or NordVPN’s Threat Protection check links automatically as you browse.
  • Browser security tools provide background protection against known phishing and malware sites (Guardio blog).
  • These are convenient but may use more memory and rely on local blacklists.
The trade‑off

Browser extensions work continuously, but they can’t replace a manual scan for a link you’re uncertain about. For the highest confidence, do a manual check with a dedicated tool.

The implication: real-time protection and manual checks each have roles—use both for layered safety.

What are the best free link checker tools?

Five free link checkers, one pattern: each uses a different data set and detection method, so a split result tells you more than a single yes/no.

Comparison of free link checker tools
Tool Key Feature Source
VirusTotal Scans with dozens of antivirus engines Guardio blog
Google Safe Browsing Binary safe/unsafe verdict from Google’s massive database Google transparency report
Mobily URL Safety Checker Resolves redirects + Google Safe Browsing integration Mobily blog
URLVoid Checks against multiple blacklist sources Guardio blog
URLScan.io Analyzes page behavior, scripts, and network activity Guardio blog
SecurityBot Broken Link Checker Crawls up to 2,000 pages for broken/internal links SecurityBot blog

The pattern: each tool covers a different detection angle, making combined use more effective.

The catch: no single tool catches everything. VirusTotal misses threats that haven’t been reported, and Google’s list may have a delay for new phishing domains. Mobily recommends using two tools for more confidence (Mobily blog).

Quotes from the experts

“Avoid phishing, malware, and joining a botnet easily with Link Checker.”

— NordVPN Link Checker page

“Free tool designed to verify URLs, helping users avoid malware, phishing attempts, and counterfeit websites.”

— Bitdefender Link Checker description

“Check if a link is safe to open. Avoid malicious websites and getting scammed online with a free link safety check.”

— F‑Secure Link Checker page

The implication: the industry consensus is clear — link checkers are a cheap, fast first line of defense, but they work best when combined with user caution and up‑to‑date browser protections.

Additional sources

phish-def.com, gitnux.org, security.org, eset.com

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Frequently asked questions

What is a phishing link?

A phishing link is a URL that leads to a fake website designed to steal personal information or install malware. Phishing links often mimic legitimate sites (e.g., your bank or social media) and are spread through email, text, or social media.

How do link checkers detect malware?

They compare the URL against databases of known malicious sites. Multi‑engine tools like VirusTotal check against dozens of antivirus databases simultaneously.

Are free link checker tools safe to use?

Most are safe, but check their privacy policies — some may log or share submitted URLs. Mobily and VirusTotal do not require accounts for basic scans.

What should I do if I clicked a malicious link?

Disconnect from the internet, run a full antivirus scan, change your passwords immediately, and monitor accounts for unusual activity. Contact your bank if financial info may be compromised.

Does Google Safe Browsing work on all browsers?

Google Safe Browsing is built into Chrome, Safari, and Firefox. It also powers many third‑party link checkers through its API.

Can link checkers protect against zero‑day threats?

Generally no — zero‑day threats are unknown to databases. Behavior‑based scanners like URLScan.io can sometimes catch unusual script activity, but no tool offers 100% protection.

How often should I check links before clicking?

Always check unsolicited links, especially those with typos, urgency, or unusual senders. For routine emails from known contacts, hover over the link first to verify the URL.

Do link checkers work with shortened URLs?

Many do — Mobily and VirusTotal expand shortened URLs and scan the final destination. Always check a shortened link before clicking, as it can hide the true domain.

For daily protection, the choice is clear: use a combination of a real‑time browser extension and a manual multi‑engine scanner for the most suspicious links. But no tool replaces good judgment — if a link feels off, trust your gut and don’t click.

The takeaway: staying safe online means using tools and your own caution together, so you can confidently handle any link that comes your way.