🔍 Free Source Code Scanner
Free website code scanner

Search & Scan Website Source Code for
Security Flaws - 100% Free

Perform a deep-scan of HTML, CSS, and JavaScript across a single page or an entire site via sitemap. Locate Salesforce IDs, GTM tags, or specific code patterns in seconds. No installation required.


Single page scan
Full website scan via sitemap
Regex support
Export results as CSV
Highlighted matches
How it works: This tool fetches raw HTML/CSS/JS via public CORS proxies and searches it client-side. Content loaded dynamically via JavaScript after page load may not appear in results. Works best on standard HTML pages.
Fetching...
Results

Search Any Pattern

Find any text, HTML tag, CSS class, JavaScript variable, Salesforce ID, or custom data attribute across any webpage's source code.

Full Website Coverage

Automatically discovers all pages via sitemap.xml and scans each one, perfect when you don't know which page contains the code you're looking for.

Regex Power Search

Use regular expressions to match complex patterns, great for finding all Salesforce IDs, tracking codes, or any variable-format strings in source code.

Common Use Cases

Find Salesforce IDs hidden in page source
Locate Google Analytics / GTM tracking codes
Search for specific CSS classes or HTML IDs
Find API endpoints or JavaScript variables
Verify schema markup across all pages
Audit meta tags and SEO elements site-wide
Find deprecated scripts or outdated libraries
Check if a pixel or chat widget is installed

No fluff. Just a clean source code scanner.

We know the drill you’re in the middle of a sprint and need a quick sanity check on your security. You don’t want to talk to a sales rep for a quote or wait three days for an installation.

That’s why we made this source code scanner free. It’s built on 2026 security standards to catch the stuff that actually matters SQLi, XSS, and broken auth. Whether you’re a solo dev in Dubai or part of a global team, you get the same best price: $0.

Real tools for real developers. No logs, no storage, no nonsense.

Why Use a Source Code Scanner?

At Scan The Source, we understand that maintaining a clean codebase is critical for both security and SEO performance. According to Google Search Central, how your code is structured directly impacts how search engines crawl and index your content. Our tool is designed by web performance specialists to help developers and SEO professionals identify "code bloat," verify Schema.org markup, and ensure that tracking pixels (like Meta or LinkedIn) are firing correctly across every sub-page. By scanning client-side rendered code, you gain a transparent view of what the browser and the crawler actually sees.

Frequently Asked Questions

Can I search for hidden JavaScript variables?

Yes. SourceScan reads the rendered HTML and JavaScript files, allowing you to find API keys, variable names, or third-party script configurations that aren't visible on the front end.


Does this tool work on SPAs (Single Page Applications)?

Our scanner is optimized for standard HTML and many JavaScript-heavy sites. However, content loaded dynamically via complex user interactions may require a manual check.


Is this tool free to use?

Yes, the Scan the source is completely free with no signup required. You can use it as many times as you need.


Is my data stored on your servers?

No. SourceScan is a privacy-first tool. All scans are performed in real-time, and we do not store the source code of the websites you analyze.