StackPulse detects Impact on 248 websites — 0.14% of the 173,900 domains in the index — making it the #1 affiliate technology we track. Updated October 27, 2026.
StackPulse currently detects Impact on 248 websites, which is 0.14% of the 173,900 domains in the index. The count is refreshed as the crawler re-scans the web.
How do I check whether a website uses Impact?
Open the free StackPulse lookup, enter the domain and the affiliate section will list Impact if its scripts, headers or markup are present. Developers can call GET /v1/lookup/:domain.
Can I download a list of websites that use Impact?
Yes. Lead Export filters the index by Impact (optionally combined with other technologies) and streams the matching domains as CSV, up to 50,000 rows per file.
What is Impact?
Impact is a affiliate technology. It ranks #1 of 5 affiliate technologies by number of websites in the StackPulse index.
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