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A PDF file is often a combination of vector graphics, text, and bitmap graphics. The basic types of content in a PDF are: Typeset text stored as content streams (i.e., not encoded in plain text ); Vector graphics for illustrations and designs that consist of shapes and lines;
Free ( Mozilla Public License) an Office suite; allows to export (and import, with accuracy limitations) PDF files. Microsoft Word 2013. Proprietary. Desktop software. The 2013 edition of Office allows PDF files to be converted into a format that can be edited. Nitro PDF Reader. Trialware.
Some engines suggest queries when the user is typing in the search box. A search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The user inputs a query within a web browser or a mobile app, and the search results are often a list of hyperlinks ...
Search engine (computing) In computing, a search engine is an information retrieval software system designed to help find information stored on one or more computer systems. Search engines discover, crawl, transform, and store information for retrieval and presentation in response to user queries. The search results are usually presented in a ...
Windows. IDOL Enterprise Desktop Search, HP Autonomy Universal Search. [ 5] Proprietary, commercial. Beagle. Linux. Open-source desktop search tool for Linux based on Lucene. Unmaintained since 2009. A mix of the X11/MIT License and the Apache License.
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
Metasearch engine. A metasearch engine (or search aggregator) is an online information retrieval tool that uses the data of a web search engine to produce its own results. [ 1][ 2] Metasearch engines take input from a user and immediately query search engines [ 3] for results. Sufficient data is gathered, ranked, and presented to the users.
Site map. A sitemap is a list of pages of a web site within a domain . There are three primary kinds of sitemap: Sitemaps used during the planning of a website by its designers. Human-visible listings, typically hierarchical, of the pages on a site. Structured listings intended for web crawlers such as search engines.