DOCX filename extension and conversely labels a Microsoft Word document with a.
#PDF SEARCH ENGINE PDF#
However, what if someone gives a PDF file a. DOCX format would indicate a Microsoft Word document. PDF filename extension would indicate a PDF file format, and a. You might think that using the filename extension would be an easy way to figure out which specification to apply.
#PDF SEARCH ENGINE ARCHIVE#
And each individual file would require its own specification even if it appears inside a compression archive like. If the document filters attempt to parse a PDF file using a Microsoft Word specification for example, the result will be gibberish. Before parsing a file, the document filters need to first figure out which binary format specification applies. The software component that does this parsing goes by the name document filters.Įvery file type, including PDF, has its own unique specification for how it stores text in binary format. The job of a search engine is to parse the binary format to retrieve the text. Like most modern data types, if you look at a PDF in binary format, it is difficult to discern the words at all through the fog of binary codes. Reviewing all files at once in binary format also opens the door to multiuser concurrent searching and advanced integrated search options across the entire repository.
Further, what if the collection also includes a mix of other formats like “Office” documents, email files, compressed archives and other miscellaneous data?įor efficiency, instead of individually retrieving and searching each file in its associated application, a search engine needs to review all files together in binary format. PDF viewers such as Adobe Reader also give you the option to search for a word or phrase.īut what if you had to search across millions of PDFs? Pulling up each PDF individually in a PDF viewer and then individually searching each for specific keywords would hardly be an efficient approach. When you review a PDF file, you typically look at the document from inside a PDF viewer like Adobe Reader, and the PDF file ordinarily appears just as that file would print. PDF was originally developed as a printer-like file format.
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