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PDFtk (short for PDF Toolkit) is a toolkit for manipulating Portable Document Format (PDF) documents. [ 3 ] [ 4 ] It runs on Linux , Windows and macOS . [ 5 ] It comes in three versions: PDFtk Server ( open-source command-line tool ), PDFtk Free ( freeware ) and PDFtk Pro ( proprietary paid ). [ 2 ]
Installing the Unpaywall extension on your browser helps you find the full text of the articles wherever you found them. WorldCat has millions of books and journal articles, and if you register for a free account, it will show you the closest libraries to you that have the source your are looking for. Some books and articles are available in ...
An IFilter acts as a plug-in for extracting full-text and metadata for search engines. A search engine usually works in two steps: [2] [3] The search engine goes through a designated place, e.g. a file folder or a database, and indexes all documents or newly modified documents, including the various types documents, in the background and creates internal data to store indexing result.
Finding duplicated references: a tool that will find references with the same URL on a page, with some false positives and missed items, is the URL Extractor For Web Pages and Text. It is not a Wikipedia tool, and there may be other tools available for the purpose. Instructions on its use for Wikipedia are in WP:DUPREF.
Jurn is a free-to-use online search tool for finding and downloading free full-text scholarly works. In 2014 Jurn expanded beyond open access journals in the arts and humanities, to also index open journals in ecology, science, biomedical, business and economics. Jurn is actively curated and maintained. Free Jurn [89] L'Année philologique
1.5.1 Free Yes GNU GPL: CiteULike: Oversity Limited 2004-11 Shut down on 2019-03-30 [50] Free No Proprietary [r] Centrally hosted website colwiz: colwiz Ltd 2011 2016-05-09 Free / Online storage free up to 3 GB / Additional storage space available No Proprietary: Now combined with wizdom.ai Pybliographer: pybliographer developers 1998-10-30 (0. ...
Template:Unreferenced for an article (rather than an individual statement) that does not cite any references or sources. Template:More citations needed for an article (rather than an individual statement) that has some citations, but not enough. Template messages – Sources of articles; Inline verifiability and sources cleanup templates
Semantic Scholar - Semantic Scholar is an artificial intelligence–powered research tool for scientific literature. OpenAlex - OpenAlex is a bibliographic catalogue of scientific papers, authors and institutions accessible in open access mode.