LiteParse September update: PDFium 20-25% faster, plus visual grounding and is-complex routing

LiteParse 9 月更新：PDFium 提速 20-25%，新增视觉定位与 is-complex 路由 API

LiteParse shipped four updates. First, a fork of PDFium with surgical optimizations cuts text extraction time by 20-25%. With OCR off, it averages 2.8ms/page for text and 3.9ms/page for full markdown rendering—the fastest open parser they've tested. Second, markdown heuristics accuracy improved, though the post doesn't share specific metrics. Third, visual grounding now maps parsed elements back to PDF page coordinates. Fourth, a new is-complex API lets callers route documents by complexity before choosing a parsing pipeline. LiteParse currently sees 300k+ weekly downloads and 12k+ GitHub stars.