Great tool for structured data extraction! I use Tabstack to pull data from various websites, and then feed the JSON output into tools.pixiaoli.cn for formatting, validation, and conversion. The combination of Tabstack's extraction API + a client-side JSON formatter/validator is a really efficient workflow for data pipelines. The Mozilla backing for privacy is a huge plus — knowing my extraction data isn't being sold or used for training is reassuring. Love that it enforces schema on every call, even when pages change.