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Investigating the source code of a website
This OSINT Tips article explains how to investigate the source code of a website.
About Investigating the source code of a website
This OSINT Tips article explains how to inspect a website's source code to find information such as Google Analytics IDs. It describes opening page source, searching for IDs in the form UA-xxxxxx-xx, and pasting the ID into a third-party lookup site such as Spyonweb.com to find other sites using the same account.
It notes the method only applies when a site uses Google Analytics, that a search can return multiple matches requiring review, and that understanding the code is needed to find other information.
Key features
- Explains how to open page source with right-click
- Describes finding Google Analytics IDs formatted as UA-xxxxxx-xx
- Shows using Ctrl-F to search source code for UA-
- Explains pasting ID into Spyonweb to find linked websites
- Notes source code shows site structure and running programs
- Advises checking multiple ID lookup services for comparison
Best for: OSINT practitioners and investigators learning to link websites through shared analytics IDs.
Good for
- Gives step-by-step instructions from opening source to lookup
- Provides examples for viewing and searching steps
- Advises using multiple lookup services to compare results
Watch out for
- Only applies if the target site uses Google Analytics
- Find function can return multiple results that need review
- Third-party lookup sites can shut down
Investigating the source code of a website at a glance
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Investigating the source code of a website FAQ
How do I find a website's Google Analytics code?
Open View page source, search with Ctrl-F for UA-, and look for an ID like UA-xxxxxx-xx.
How can the code show related websites?
Copy the UA- number without the last segment, paste it into a site like Spyonweb.com, and run the search to see other sites using it.
What else can source code reveal?
It can show how a website is built and what programs are running on it.
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