# PyMuPDFEntityBBoxFilter **`class PyMuPDFEntityBBoxFilter(config)`** Bases: [`Filter`](squirro.lib.nlp.steps.filters.Filter.md#squirro.lib.nlp.steps.filters.Filter) After SquirroEntityFilter has created entities with offsets/lengths, this step uses PyMuPDF to compute precise bounding boxes and fills in page_to_rects for each extract. Parameters - `type` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – bbox_filter - `entities_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – Name of the input field where entities are stored. - `output_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – Name of the output field where the updated entities will be stored. - `pdf_input_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``None`) – Field of pdf page content Methods SummaryMethods Documentation **`get_ent_ranking(content, query)`** Get the ordinal of the entity based on its text and page. This assumes entities are grouped by text and page. Return type [`dict`](https://docs.python.org/3.11/library/stdtypes.html#dict) **`get_pdf_files(fields)`** Return type [`Iterator`](https://docs.python.org/3.11/library/collections.abc.html#collections.abc.Iterator)[[`tuple`](https://docs.python.org/3.11/library/stdtypes.html#tuple)[[`dict`](https://docs.python.org/3.11/library/stdtypes.html#dict), [`str`](https://docs.python.org/3.11/library/stdtypes.html#str)]] **`process_doc(doc)`** Process a document Parameters `doc` ([`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document)) – Document Returns Processed document Return type [Document](../technical/libnlp/base.md#squirro.lib.nlp.document.Document)