chore: name the extra after its dependency; keep README install section minimal

README.md

@@ -153,8 +153,6 @@ A unified `PageIndexClient` powers both local self-hosted and cloud-managed mode
 pip install pageindex
 ```
 
-Local-mode image extraction uses PyMuPDF (AGPL-licensed) and is an optional extra: `pip install "pageindex[images]"`. Without it, local indexing is text-only.
-
 ### Quick start
 
 ```python

pageindex/index/utils.py

@@ -816,7 +816,7 @@ def get_page_tokens(pdf_path, model=None, pdf_parser="PyPDF2"):
             page_list.append((page_text, token_length))
         return page_list
     elif pdf_parser == "PyMuPDF":
-        import pymupdf  # optional dependency: pip install pageindex[images]
+        import pymupdf  # optional dependency: pip install pageindex[pymupdf]
         if isinstance(pdf_path, BytesIO):
             pdf_stream = pdf_path
             doc = pymupdf.open(stream=pdf_stream, filetype="pdf")

pageindex/parser/pdf.py

@@ -56,7 +56,7 @@ class PdfParser:
             if not _warned_no_pymupdf:
                 logging.getLogger(__name__).warning(
                     "PyMuPDF is not installed; skipping image extraction. "
-                    'Install with: pip install "pageindex[images]"')
+                    'Install with: pip install "pageindex[pymupdf]"')
                 _warned_no_pymupdf = True
             return {}
 

pyproject.toml

@@ -35,7 +35,7 @@ typing-extensions = ">=4.9.0"
 pydantic = ">=2.5.0,<3.0.0"
 
 [tool.poetry.extras]
-images = ["pymupdf"]
+pymupdf = ["pymupdf"]
 
 [tool.poetry.group.dev.dependencies]
 pytest = ">=7.0"