Dolphin is an open-source document image parsing project from ByteDance that uses heterogeneous anchor prompting and a document-type-aware two-stage architecture. It handles both digital-born and photographed documents, offering page-level and element-level parsing (text, tables, formulas, code). Dolphin-v2 (3B) improves accuracy and adds multi-page PDF support, deployment recipes (vLLM, TensorRT-LLM), and Hugging Face model hosting. The repository includes code, demos, pretrained models, and a BibTeX citation; license: MIT.