ttclid?A unique token TikTok appends to ad clicks so the destination site's TikTok Pixel can report your visits and purchases back to TikTok, matched to your account.
When you tap through a TikTok ad, the destination URL carries ttclid, a token identifying your exact click. The site's TikTok Pixel captures it, and later events, viewing a product, adding to cart, buying, are sent back to TikTok through the pixel or the server-side Events API with the token attached.
TikTok explicitly recommends advertisers pass ttclid with every conversion event because it raises match quality, which is the polite way of saying it connects the purchase to the specific logged-in TikTok user who clicked.
Yes. The page renders identically without it. Only TikTok's ad attribution and the advertiser's campaign stats lose data.
Rather's Link Shortener strips ttclid 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.