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PDF encryption, decryption and signing; Change PDF information (author, title, etc.) Compress and shrink PDF files; Add a watermark or stamp a PDF file; Combine pages with a digital paper; Convert to and from PDF; Multiple PDF printers for different purposes since 7.7.0; Full featured and lightweight PDF reader since version 8.7.0
Free learning tools. Wikivoyage Free travel guide. Wiktionary Dictionary and thesaurus. Wikipedia languages. This Wikipedia is written in English.
Freeware PDF reader, tagger, editor (simple editions) and converter (free for non-commercial uses). Allows edit of text, draw lines, highlighting of Text, measuring distance. Solid PDF Tools: Proprietary: Convert PDFs into editable documents and create PDFs from a variety of file sources.
Some web browsers allow you to simply Save As... or Print to PDF. Wikipedia's inbuilt Download as PDF option. Other PDF software can be used to create a PDF from the web page, which may give more control over the output. This page offers help with Wikipedia's download tool.
The Free Library has a separate homepage. It is a free reference website that offers full-text versions of classic literary works by hundreds of authors. It is also a news aggregator, offering articles from a large collection of periodicals containing over four million articles dating back to 1984.
Various collaborative online encyclopedias were attempted before the start of Wikipedia, but with limited success. [19] Wikipedia began as a complementary project for Nupedia, a free online English-language encyclopedia project whose articles were written by experts and reviewed under a formal process. [20]
This script adds a menu at the top of pages and let you change the spellings from/to Britsh/American English based in lists of words (en-US and en-GB), editable by anyone. You can see the changes directly in the dictionary pages, for example, or accessing articles where there are words in the lists (like Belgium and others ).
Some web apps offer free PDF editing and annotation tools. The Free Software Foundation was "developing a free, high-quality and fully functional set of libraries and programs that implement the PDF file format and associated technologies to the ISO 32000 standard", as one of its high priority projects .