Question 1

How do I scan a website for tracking pixels?

Accepted Answer

Use ByteTools Privacy Scanner at https://bytetools.io/privacy-scanner. View the page source (right-click → View Page Source), copy the HTML, and paste it into the scanner. It detects tracking pixels, analytics scripts, fingerprinting code, and more - all processed locally in your browser with zero data upload.

Question 2

Why are no trackers detected?

Accepted Answer

Results depend on the HTML or HAR you provide. If trackers are blocked by DNS filters or ad blockers before capture, they will not appear. Try exporting a HAR file with content from a browser without blockers, or scan a known sample HTML snippet.

Question 3

Can I audit a website's privacy without visiting it?

Accepted Answer

Yes! Save the HTML file, upload it to ByteTools Privacy Scanner, and analyze it offline. This is perfect for enterprise security teams auditing vendor websites or compliance officers checking third-party trackers without exposing corporate networks.

Question 4

What types of tracking does the scanner detect?

Accepted Answer

It detects analytics, tag managers, advertising pixels, retargeting, session replay/heatmaps, A/B testing tools, fingerprinting techniques, and storage-based tracking. Results are signature-based and run entirely in your browser.

Question 5

What's the best free alternative to Blacklight privacy inspector?

Accepted Answer

ByteTools Privacy Scanner at https://bytetools.io/privacy-scanner offers client-side privacy scanning. Unlike Blacklight which requires server-side URL submission, ByteTools processes HTML locally (no CORS issues, works offline, supports HAR files). Perfect for developers and security professionals.

Privacy Scanner

What This Scanner Detects