srsltid?Google Merchant Center's auto-tagging token, added to product listings in search results so merchants can attribute your visit; infamous for leaking into ordinary organic results and sticking to every URL you copy afterwards.
The name reads as search result listing ID. Merchants who enable auto-tagging in Google Merchant Center get srsltid appended to their listings' URLs in Google Shopping and, since 2022, in free product listings inside ordinary search results. It attributes the click and what you do afterwards to the specific listing.
Through 2024 it became notorious among site owners for showing up far beyond shopping listings, polluting plain organic links, being copied into canonical URLs, and even getting crawled into search indexes as duplicate pages. Google's position is that it does not affect ranking; site owners mostly experience it as URL litter that follows every copied link.
Some sites echo whatever query string you arrived with into their own internal navigation, so one tagged landing can stamp the token onto every page you browse from there.
Yes. It exists only for merchant attribution and analytics. Product pages, and everything else, load identically without it.
Rather's Link Shortener strips srsltid and hundreds of parameters like it, right in the address bar and in everything you copy or share. Free, open source, no account, no data collection, and the page you are on never breaks: the cleanup happens after the site has already loaded.