How is this different from running Google Safe Browsing manually?

It bundles multiple reputation sources and adds a quick on-page heuristic scan — and lets you do it for 25 URLs at once.

Can it detect a brand-new infection?

Only if the infection trips one of the heuristic patterns or has been picked up by a reputation source. Very fresh infections (within minutes) may be missed — that is why continuous monitoring matters.

My site says "Flagged" but I see no problem — what do I do?

Open the row in the single-URL Malware Checker for the specific reason, then cross-check with Google Search Console.

Does it scan the file system?

No — this is a remote check. For file-system scans you need a server-side AV on the origin.

How often is the blocklist data refreshed?

Every few hours. For real-time monitoring with instant alerts, sign up for LemWatch.

Can it check subdomains separately?

Yes — subdomain reputation is checked independently of the apex.

Free Tool

Updated 6 June 2026

Bulk Website Malware Checker

Cross-check up to 25 URLs against malware and phishing blocklists in one paste. Flag any site flagged by major safe-browsing sources.

By Deepak Shukla — Founder & CEO, Pearl Lemon

Paste your URLs — one per line, up to 25

0 URLs ready

What This Tool Checks

Cross-check against public safe-browsing blocklists
Per-URL safe / flagged verdict
Type of flag (malware, phishing, deceptive)
Recent suspicious-content heuristics

Why This Matters

A site flagged for malware loses all SEO value and most direct traffic instantly. Browsers show a full red interstitial. Catching a flag before clients do is a 24-hour difference, not a 24-week one.

How to Fix Issues

1.Any "Flagged" row is a priority — open the single-URL Malware Checker for the exact reason
2.If your site is flagged but you see no infection, request a review via Google Search Console
3.If your site IS infected, take it offline, scan the file system, restore from a clean backup, then request unflagging
4.Add active malware monitoring to LemWatch so future flags trigger an instant alert

If one of your sites gets flagged for malware, the first hour matters. Google blocks search-result clicks. Chrome and Safari show a red interstitial. Email links stop working. Bulk malware scans let you sweep your whole portfolio at once so you catch a flag the same hour it appears.

What this tool does

Paste up to 25 URLs. We cross-check each one against the public safe-browsing reputation data our edge function aggregates, plus a quick heuristic scan of the homepage for known compromise patterns. Each row gets a safe/flagged verdict with the flag type.

What this is not

This is a reputation and heuristic check — not an antivirus scanner. It catches sites that have already been listed by major safe-browsing sources, plus a few obvious tampering patterns. For deep file-system scans, you need a server-side antivirus on the origin.

Methodology

For each URL we extract the hostname and query public safe-browsing reputation data via our backend. We also fetch the homepage and look for a small set of known compromise patterns: pharmaceutical spam keywords, hidden injected iframes, base64-obfuscated script tags pointing at suspicious hosts, and unexpected redirects to gambling/adult domains. The verdict is 'flagged' if any of these match; otherwise 'safe'. False positives are possible — always confirm in the single-URL tool before acting.

Frequently Asked Questions

Monitor this continuously with LemWatch

A one-off bulk malware check shows you today. LemWatch re-runs the same checks around the clock and alerts you the moment something breaks — free for up to 10 sites, no card needed.