• Opf File To Pdf Online
• Convert Opf File To Pdf Online
• Opf To Pdf Converter Online Free

EPUB is an e-bookfile format that uses the '.epub' file extension. The term is short for electronic publication and is sometimes styled ePub. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers. EPUB is a technical standard published by the International Digital Publishing Forum (IDPF). It became an official standard of the IDPF in September 2007, superseding the older Open eBook standard.^[2]

Opf File To Pdf Online

Pdf To Opf Converter, free pdf to opf converter freeware software downloads. Pdf To Opf Converter; Opf Converter Pdf; Pdf. The PDF online converter can convert from Microsoft Word to PDF as well as a lot of other formats. This free online tool converts PDF and other documents to the most popular ebook formats. Step 1: Upload your files. They stay safe and private. Once edited, they are deleted. Rather not upload your files and work with them on your computer? Try Sejda Desktop. Same features as the online service, and the files are processed locally. Click Upload PDF files and select files from your local computer. Dragging and dropping files to the page also works. 40 (c) VAr planning to minimise the cost of reactive power support The mathematical description of the OPF problem is presented below: 3.1.1 OPF Objective Function.

The Book Industry Study Group endorses EPUB 3 as the format of choice for packaging content and has stated that the global book publishing industry should rally around a single standard.^[3] The EPUB format is implemented as an archive file consisting of HTML files carrying the content, along with images and other supporting files. EPUB is the most widely supported vendor-independent XML-based (as opposed to PDF) e-book format; that is, it is supported by the largest number of hardware readers.^{[citation needed]}

• 1History
  • 1.1Version 2.0.1
• 2Features
• 4Implementation
• 5Software

History[edit]

A successor to the Open eBook Publication Structure, EPUB 2.0 was approved in October 2007,^[4] with a maintenance update (2.0.1) approved in September 2010.^[5]

The EPUB 3.0 specification became effective in October 2011, superseded by a minor maintenance update (3.0.1) in June 2014.^[6] New major features include support for precise layout or specialized formatting (Fixed Layout Documents), such as for comic books,^[7] and MathML support. The current version of EPUB is 3.1, effective January 5, 2017.^[8] The (text of) format specification underwent reorganization^[9] and clean-up; format supports remotely-hosted resources and new font formats (WOFF 2.0 and SFNT)^[10] and uses more pure HTML and CSS.^[11]

In May 2016 IDPF Members approved World Wide Web Consortium (W3C) merger,^[12] 'to fully align the publishing industry and core Web technology'.^[13]

Version 2.0.1[edit]

EPUB 2.0 was approved in October 2007, with a maintenance update (2.0.1) intended to clarify and correct errata in the specifications being approved in September 2010.^[5] EPUB version 2.0.1 consists of three specifications:

• Open Publication Structure (OPS) 2.0.1, contains the formatting of its content.^[14]
• Open Packaging Format (OPF) 2.0.1, describes the structure of the .epub file in XML.^[15]
• Open Container Format (OCF) 2.0.1, collects all files as a ZIP archive.^[16]

EPUB internally uses XHTML or DTBook (an XML standard provided by the DAISY Consortium) to represent the text and structure of the content document, and a subset of CSS to provide layout and formatting. XML is used to create the document manifest, table of contents, and EPUB metadata. Finally, the files are bundled in a zip file as a packaging format.

Open Publication Structure 2.0.1[edit]

An EPUB file uses XHTML 1.1 (or DTBook) to construct the content of a book as of version 2.0.1. This is different from previous versions (OEBPS 1.2 and earlier), which used a subset of XHTML. There are, however, a few restrictions on certain elements. The mimetype for XHTML documents in EPUB is application/xhtml+xml.^[14][a]

Styling and layout are performed using a subset of CSS 2.0, referred to as OPS Style Sheets. This specialized syntax requires that reading systems support for only a portion of CSS properties and adds a few custom properties. Custom properties include oeb-page-head, oeb-page-foot, and oeb-column-number. Font-embedding can be accomplished using the @font-face property, as well as including the font file in the OPF's manifest (see below). The mimetype for CSS documents in EPUB is text/css.^[14][b]

EPUB also requires that PNG, JPEG, GIF, and SVG images be supported using the mimetypesimage/png, image/jpeg, image/gif, image/svg+xml. Other media types are allowed, but creators must include alternative renditions using supported types.^[14] For a table of all required mimetypes, see Section 1.3.7 of the specification.

Unicode is required, and content producers must use either UTF-8 or UTF-16 encoding.^[14] This is to support international and multilingual books. However, reading systems are not required to provide the fonts necessary to display every unicode character, though they are required to display at least a placeholder for characters that cannot be displayed fully.^[14]

An example skeleton of an XHTML file for EPUB looks like this:

Open Packaging Format 2.0.1[edit]

The OPF specification's purpose is to '..[define] the mechanism by which the various components of an OPS publication are tied together and provides additional structure and semantics to the electronic publication.'^[15] This is accomplished by two XML files with the extensions .opf and .ncx.

.opf file

The OPF file, traditionally named content.opf, houses the EPUB book's metadata, file manifest, and linear reading order. This file has a root element package and four child elements: metadata, manifest, spine, and guide. Furthermore, the package node must have the unique-identifier attribute. The .opf file's mimetype is application/oebps-package+xml.^[15]

The metadata element contains all the metadata information for a particular EPUB file. Three metadata tags are required (though many more are available): title, language, and identifier. title contains the title of the book, language contains the language of the book's contents in RFC 3066 format or its successors, such as the newer RFC 4646 and identifier contains a unique identifier for the book, such as its ISBN or a URL. The identifier's id attribute should equal the unique-identifier attribute from the package element.^[15][c]

The manifest element lists all the files contained in the package. Each file is represented by an item element, and has the attributes id, href, media-type. All XHTML (content documents), stylesheets, images or other media, embedded fonts, and the NCX file should be listed here. Only the .opf file itself, the container.xml, and the mimetype files should not be included.^[15] Note that in the example below, an arbitrary media-type is given to the included font file, even though no mimetype exists for fonts.

The spine element lists all the XHTML content documents in their linear reading order. Also, any content document that can be reached through linking or the table of contents must be listed as well. The toc attribute of spine must contain the id of the NCX file listed in the manifest. Each itemref element's idref is set to the id of its respective content document.^[15]

The guide element is an optional element for the purpose of identifying fundamental structural components of the book. Each reference element has the attributes type, title, href. Files referenced in href must be listed in the manifest, and are allowed to have an element identifier (e.g. #figures in the example).^[15][d]

An example OPF file:

.ncx file

The NCX file (Navigation Control file for XML), traditionally named toc.ncx, contains the hierarchical table of contents for the EPUB file. The specification for NCX was developed for Digital Talking Book (DTB), is maintained by the DAISY Consortium, and is not a part of the EPUB specification. The NCX file has a mimetype of application/x-dtbncx+xml.

Of note here is that the values for the docTitle, docAuthor, and meta name='dtb:uid' elements should match their analogs in the OPF file. Also, the meta name='dtb:depth' element is set equal to the depth of the navMap element. navPoint elements can be nested to create a hierarchical table of contents. navLabel's content is the text that appears in the table of contents generated by reading systems that use the .ncx. navPoint's content element points to a content document listed in the manifest and can also include an element identifier (e.g. #section1).^[15][17]

A description of certain exceptions to the NCX specification as used in EPUB is in Section 2.4.1 of the specification. The complete specification for NCX can be found in Section 8 of the Specifications for the Digital Talking Book.^[17]

An example .ncx file:

Open Container Format 2.0.1[edit]

An EPUB file is a group of files that conform to the OPS/OPF standards and are wrapped in a ZIP file.^[18] The OCF specifies how to organize these files in the ZIP, and defines two additional files that must be included.

The mimetype file must be a text document in ASCII that contains the string application/epub+zip. It must also be uncompressed, unencrypted, and the first file in the ZIP archive. This file provides a more reliable way for applications to identify the mimetype of the file than just the .epub extension.^[16]

Also, there must be a folder named META-INF, which contains the required file container.xml. This XML file points to the file defining the contents of the book. This is the OPF file, though additional alternative rootfile elements are allowed.^[16]

Apart from mimetype and META-INF/container.xml, the other files (OPF, NCX, XHTML, CSS and images files) are traditionally put in a directory named OEBPS.

An example file structure:

An example container.xml, given the above file structure:

Version 3.0.1[edit]

The EPUB 3.0 Recommended Specification was approved on 11 October 2011. On June 26, 2014 EPUB 3.0.1 was approved as a minor maintenance update to EPUB 3.0. EPUB 3.0 supersedes the previous release 2.0.1.^[e]

EPUB 3 consists of a set of four specifications:^[19]

• EPUB Publications 3.0, which defines publication-level semantics and overarching conformance requirements for EPUB Publications
• EPUB Content Documents 3.0, which defines profiles of XHTML, SVG and CSS for use in the context of EPUB Publications
• EPUB Open Container Format (OCF) 3.0, which defines a file format and processing model for encapsulating a set of related resources into a single-file (ZIP) EPUB Container.
• EPUB Media Overlays 3.0, which defines a format and a processing model for synchronization of text and audio

The EPUB 3.0 format was intended to address the following criticisms:

• While good for text-centric books, EPUB was rather unsuitable for publications that require precise layout or specialized formatting, such as comic books.^[7]
• A major issue hindering the use of EPUB for most technical publications was the lack of support for equations formatted as MathML. They were included as bitmap or SVG images, precluding proper handling by screen readers and interaction with computer algebra systems. Support for MathML is included in the EPUB 3.0 specification.
• Other criticisms of EPUB were the specification's lack of detail on linking within or between EPUB books, and its lack of a specification for annotation. Such linking is hindered by the use of a ZIP file as the container for EPUB. Furthermore, it was unclear if it would be better to link by using EPUB's internal structural markup (the OPF specification mentioned above) or directly to files through the ZIP's file structure.^[20] The lack of a standardized way to annotate EPUB books led to difficulty in sharing and transferring annotations and therefore limited the use scenarios of EPUB, particularly in educational settings, because it cannot provide a level of interactivity comparable to the web.^[21]

On June 26, 2014, the IDPF published EPUB 3.0.1 as a final Recommended Specification.^[22]

In November 2014, EPUB 3.0 was published by the International Standards Organization as ISO/IEC TS 30135 (parts 1-7).^[23]

Features[edit]

The format and many readers support the following:

• Reflowable document: optimize text for a particular display
• Fixed-layout content:^[24] pre-paginated content can be useful for certain kinds of highly designed content, such as illustrated books intended only for larger screens, such as tablets.^[25]
• Like an HTML web site, the format supports inline raster and vector images, metadata, and CSS styling.
• Page bookmarking
• Passage highlighting and notes
• A library that stores books and can be searched
• Re-sizable fonts, and changeable text and background colors
• Support for a subset of MathML^[26]
• Digital rights management—can contain digital rights management (DRM) as an optional layer^[27]

Digital rights management[edit]

An EPUB file can optionally contain DRM as an additional layer, but it is not required by the specifications.^[27] In addition, the specification does not name any particular DRM system to use, so publishers can choose a DRM scheme to their liking. However, future versions of EPUB (specifically OCF) may specify a format for DRM.^[16]

The EPUB specification does not enforce or suggest a particular DRM scheme. This could affect the level of support for various DRM systems on devices and the portability of purchased e-books. Consequently, such DRM incompatibility may segment the EPUB format along the lines of DRM systems, undermining the advantages of a single standard format and confusing the consumer.^{[28][29][30][31][32][33]}

DRMed EPUB files must contain a file called rights.xml within the META-INF directory at the root level of the ZIP container.^{[16][clarification needed]}

Adoption[edit]

EPUB is widely used on software readers such as Google Play Books on Android and Apple Books on iOS and macOS, but not by Amazon Kindle e-readers. iBooks also supports the proprietary iBook format, which is based on the EPUB format but depends upon code from the iBooks app to function.^[34]

Data interchange

EPUB is a popular format for ebook creation because it can be an open format and is based on HTML, as opposed to Amazon's proprietary format for Kindle readers. Popular EPUB producers of public domain and open licensed content, include Project Gutenberg, PubMed Central, SciELO and others.

Implementation[edit]

An EPUB file is an archive that contains, in effect, a website. It includes HTML files, images, CSS style sheets, and other assets. It also contains metadata. EPUB 3 is the latest version. By using HTML5, publications can contain video, audio, and interactivity, just like websites in web browsers.^[25]

Archive and install failed with error. When you install Microsoft SQL Server 2008, the installation fails. In the Summary.txt file, the following error message is logged: Microsoft.SqlServer.Chainer.Infrastructure.InputSettingValidationException. Attributes do not match. Present attributes (Hidden, System, Directory, Archive), included attributes (0),.

Container[edit]

An ePub publication is delivered as a single file. This file is an unencrypted zipped archive containing a set of interrelated resources.^[35]

An OCF (Open Container Format) Abstract Container defines a file system model for the contents of the container. The file system model uses a single common root directory for all contents in the container. All (non-remote) resources for publications are in the directory tree headed by the container's root directory, though EPUB mandates no specific file system structure for this. The file system model includes a mandatory directory named META-INF that is a direct child of the container's root directory. META-INF stores container.xml.

The first file in the archive must be the mimetype file. It must be unencrypted and uncompressed so that non-ZIP utilities can read the mimetype. The mimetype file must be an ASCII file that contains the string 'application/epub+zip'. This file provides a more reliable way for applications to identify the mimetype of the file than just the .epub extension.^[35]

An example file structure:

There must be a META-INF directory containing container.xml. This file points to the file defining the contents of the book, the OPF file, though additional alternative rootfile elements are allowed.^[35] Apart from mimetype and META-INF/container.xml, the other files (OPF, NCX, XHTML, CSS and images files) are traditionally put in a directory named OEBPS. An example container.xml:

Publication[edit]

The ePUB container must contain:^[36]

• At least one content document.
• One navigation document.
• One package document listing all publication resources. This file should use the file extension .opf. It contains metadata, a manifest, fallback chains, bindings, and a spine. This is an ordered sequence of ID references defining the default reading order.

The ePUB container may contain:

• style sheets.
• PLS Documents.
• media overlay documents.

Contents[edit]

Content documents include:^[37]HTML 5 content, navigation documents, SVG documents, scripted content documents, and fixed layout documents.Contents also include CSS and PLS documents. Navigation documents supersedes the NCX grammar used in EPUB 2.

Media overlays[edit]

Books with synchronized audio narration are created in EPUB 3 by using media overlay documents to describe the timing for the pre-recorded audio narration and how it relates to the EPUB Content Document markup. The file format for Media Overlays is defined as a subset of SMIL.^[38]

Software[edit]

Many editors exist including calibre and Sigil, both of which are open source. Another open source tool, called epubcheck, can be used for validating and detecting errors in the structural markup (OCF, OPF, OPS), image, and XHTML files.^[39]

Readers exist for all major hardware platforms with the exception of Amazon Kindle, such as Adobe Digital Editions and calibre on desktop platforms, Google Play Books and Aldiko on Android and iOS, and Apple Books on macOS and iOS.

Reading software[edit]

The following software can read and display EPUB files:

See also the Wikipedia category for articles about EPUB readers.

Editing software[edit]

Notes[edit]

1. ^ For a table of the required XHTML modules and a description of the restrictions, see 'Section 2.2', ePub OPS 2.0.1 (specification draft), IDPF.
2. ^ For a table of supported properties and detailed information, see 'Section 3.0', ePub OPS 2.0.1 (specification draft), IDPF.
3. ^ For a full listing of metadata, see 'Section 2.2', ePub OPF 2.0.1 (specification draft), IDPF.
4. ^ A list of possible values for type is in 'Section 2.6', ePub OPDF 2.0.1 (specification draft), IDPF.
5. ^ Detailed descriptions of the differences between 3.0 and 2.0.1 can be found on ePub 3.0 spec changes, IDPF.

References[edit]

1. ^'Specifications'. IDPF. Retrieved January 12, 2017.
2. ^'OPS 2.0 Elevated to Official IDPF Standard'. IDPF. eBooklyn. Oct 15, 2007.
3. ^'Endorsement of EPUB 3'. BISG. Book Industry Study Group. Retrieved 18 September 2015.
4. ^'Older Versions of EPUB International Digital Publishing Forum'. idpf.org. Retrieved 2017-05-10.
5. ^ ^ab'1.1 EPUB Revision History'. IDPF. 11 October 2011.
6. ^'EPUB 3.0 International Digital Publishing Forum'. idpf.org. Retrieved 2017-01-12.
7. ^ ^abRothman, David (July 27, 2008). 'The ePub torture test: Starring 'Three Shadows,' a graphic novel'. TeleRead: Bring the E-Books Home.
8. ^'EPUB 3.1 International Digital Publishing Forum'. idpf.org. Retrieved 2017-01-12.
9. ^'EPUB 3.1 Changes from EPUB 3.0.1'. www.idpf.org. Retrieved 2017-01-12.
10. ^'EPUB 3.1 Changes from EPUB 3.0.1'. www.idpf.org. Retrieved 2017-01-12.
11. ^'EPUB 3.1 Changes from EPUB 3.0.1'. www.idpf.org. Retrieved 2017-01-12.
12. ^'IDPF Members Approve W3C Merger - Publishing Perspectives'. 9 November 2016.
13. ^'World Wide Web Consortium (W3C) and International Digital Publishing Forum (IDPF) Explore Plans to Combine'.
14. ^ ^abcdef'Open Publication Structure (OPS) 2.0.1 – Recommended Specification'. IDPF. September 4, 2010. Retrieved February 21, 2011.
15. ^ ^abcdefgh'Open Packaging Format (OPF) 2.0.1 – Recommended Specification'. IDPF. September 4, 2010. Retrieved February 21, 2011.
16. ^ ^abcde'Open Container Format (OCF) 2.0.1 – Recommended Specification'. IDPF. September 4, 2010. Retrieved February 21, 2011.
17. ^ ^ab'Specifications for the Digital Talking Book'. NISO. April 21, 2005.
18. ^ ^ab'EPUB 101'(PDF). eBook Technologies. Retrieved 10 July 2014.
19. ^'EPUB 3 Overview Draft'. EPUB 3 Working Group. IDPF. 11 October 2011. Retrieved 11 October 2011.
20. ^'Links, pointers, bookmarks, highlights: How should .epub do it?'. FrontMatters. BookGlutton. March 29, 2008.
21. ^Rothman, David (November 5, 2007). ''Social annotation and the marketplace of ideas': Time for an IDPF annotation standard for books and other e-pubs!'. TeleRead: Bring the E-Books Home.
22. ^EPUB 3.0.1 Changes, IDPF, retrieved July 8, 2014.
23. ^EPUB 3.0 Published as ISO Technical Specification, IDPF, retrieved August 28, 2018.
24. ^'Fixed-Layout Properties'. International Digital Publishing Forum. Retrieved 11 September 2015.
25. ^ ^ab'Understanding EPUB 3'. EPUBZone. International Digital Publishing Forum. Retrieved 11 September 2015.
26. ^'Embedded MathML'. IDPF. Retrieved 12 September 2015.
27. ^ ^ab'Digital Book Standards FAQs'. IDPF. November 20, 2006. Archived from the original on 2009-09-03.
28. ^Gelles, David (January 29, 2010). 'Walls close in on e-book garden'. The Financial Times.
29. ^Rothman, David (August 13, 2009). 'Adobe-DRMed ePub isn't 'open': Why the New York Times urgently needs to clarify its Sony eBook Store article'. TeleRead: Bring the E-Books Home. Archived from the original on October 14, 2009.
30. ^Biba, Paul (December 21, 2009). 'Does the Nook use its own incompatible DRM scheme?'. TeleRead: Bring the E-Books Home.
31. ^Biba, Paul (January 28, 2010). 'iPad adds to the DRM mess? Apple ebook DRM exclusive to Apple hardware'. TeleRead: Bring the E-Books Home.
32. ^Kendrick, James (January 28, 2010). 'Who Really Needs an iPad?'. JK On The Run.
33. ^Dickson, Dave (January 27, 2010). 'EPUB, iPad and Content Interoperability'. Digital Editions. Adobe.
34. ^Arnold Kim (January 19, 2012). 'New ibooks not technically in epub format'. MacRumors.
35. ^ ^abc'EPUB Open Container Format (OCF) 3.0 – Recommended Specification'. IDPF. Retrieved 11 September 2015.
36. ^'EPUB Publications'. IDPF. Retrieved 12 September 2015.
37. ^'EPUB Content Documents'. IDPF. Retrieved 12 September 2015.
38. ^'EPUB Media Overlays'. IDPF. Retrieved 12 September 2015.
39. ^'Validation tool for EPUB. Contribute to w3c/epubcheck development by creating an account on GitHub'. 9 February 2019 – via GitHub.
40. ^Pham, Alex (February 15, 2010). 'Apple to wrap digital books in FairPlay copy protection'. The Los Angeles Times.
41. ^2.9.1 release notes, Abi source.
42. ^JimmXinu. 'GUI Plugin: EpubMerge'. MobileRead Forums. Retrieved 24 February 2012.
43. ^Bott, Ed (January 22, 2012). 'How Apple is sabotaging an open standard for digital books'. ZDNet. Retrieved January 30, 2012.
44. ^'iBooks Author FAQ'. Apple. March 23, 2012. Retrieved April 26, 2012.
45. ^'Apple iBooks Author FAQ'. Apple. March 23, 2012. Retrieved April 26, 2012.
46. ^'eLaix', Extension center, Libre Office.
47. ^Sigil dev.
48. ^eXeLearning.

External links[edit]

There’s no shortage of free PDF readers, but software that will convert PDFs to other formats is much harder to come by. That’s why we’ve gathered together all the best free PDF converters in one place, picking only the most versatile.

• Need a new PDF reader? Check out our top recommendations

Most PDF readers have a few free conversion options thrown in as a bonus, but these are often very limited. For example, the otherwise superb Foxit Reader features a PDF-to-Word button in the top right of its interface, but this is in face a link to its online conversion tool. You can extract the text from PDFs and save it in TXT format, but the conversion options end there.

Similarly, Nitro PDF Reader enables you to extract images or save the words from a PDF as plain text, but the conversion options end there.

To convert PDFs into a variety of different formats (including Microsoft Word, JPG, PNG, HTML and EPUB), you need a dedicated tool. These are the best.

• We've also picked out the best paid-for PDF to Excel converters

1. Icecream PDF Converter

An amazingly flexible free PDF converter with batch processing

With a huge range of supported file types, a smart interface, and optional batch conversion, Icecream PDF Converter is the best free PDF converter around.

Icecream PDF Converter can save PDFs in DOC, DOCX, JPG, PNG, or HTML format (among others), and can handle up to 10 pages at a time. You can divide a multi-page PDF into several documents rather than one large one, or convert just a few pages from a larger document (great for extracting only a specific chapter, for example).

Convert Opf File To Pdf Online

Icecream PDF Converter also eliminates the need for a separate PDF printer driver for creating PDFs. It can convert files in any supported format, with optional password protection and customizable metadata, and the free edition lets you convert up to five documents in a single batch.

A lifetime license for the unlimited Pro version costs US$19.95 (about £15, AU$25), but the free edition will be more than enough for most home users.

2. PDFMate PDF Converter Free

A free converter with OCR to turn PDFs into editable documents

PDFMate PDF Converter Free is another powerful PDF converter, with a slightly different feature set to Icecream PDF Converter. It looks great, borrowing its style from the premium edition, and is very easy to use.

PDFMate uses optical character recognition (OCR) to convert up the three scanned PDFs to editable text – ideal if you want to archive a handout from a meeting or conference, or need to archive receipts or bank statements.

PDFMate can also convert PDFs to images, plain text, HTML, DOCX, or EPUB format. You can only convert to DOC format if you upgrade to the Pro edition for US$39.95 (about £30, AU$50), but you can rearrange page elements so the converted files look good when printed (the default settings are tailored for standard US letter paper size).

Some of the more advanced features are exclusive to the premium edition too, but the free offering doesn’t skimp on options and is another excellent choice for home users.

3. DocuFreezer

A free PDF reader with batch conversion and no page limit

DocuFreezer is free for non-commercial use, and is another solid option for converting common file types to and from PDF.

It’s not quite as feature-packed as Icecream PDF Conveter or PDFMate, but isn’t held back by restrictions on page and document counts. In fact, its batch processing tool can handle whole folders of documents or images at once.

DocuFreezer can save PDFs in popular image formats – JPG, PNG, and TIFF. The options don’t stop there, though – you can also convert text documents, spreadsheets, and presentations to JPG format so they look identical on any device, and are suitable for uploading to a website.

You can choose color settings for the converted files to ensure you don’t need to spend time tweaking them afterwards. You can also adjust the resolution of the image file, so you can be sure it’s high enough for printing, or low enough for sharing online – whatever your needs dictate.

4. WPS PDF to Word Converter

Accurate conversion to Word formats. Great for small documents

As you can tell from the name, WPS PDF to Word will only turn your PDFs into DOC or DOCX files, but that's all you need if you want to edit them without the expense of a dedicated PDF editing tool.

Its conversions are excellent, preserving formatting and images almost perfectly. Your converted documents should only need a little tweaking in your preferred word processor to look just like the originals.

WPS PDF to Word is also capable of splitting and merging PDFs – extremely useful if you're working with large documents – and there's a great selection of customizable options, including how to treat OCR files.

The only drawback of the free version is the five-page limit. For larger tasks you'll need to upgrade to the full edition for US$29.95

5. Free File Converter

Converts PDFs to any format you can name, but results very

We typically prefer desktop PDF software to online tools; they're faster, don't depend on a fast internet connection, and don't involve submitting your documents to a third party.

If you can look past these drawbacks, Free File Converter is a very convenient free conversion tool. It doesn't just accept PDFs; it can take pretty much any file you can throw at it and convert it to a more useful format.

It's handy if you need to convert a small PDF to an image file in a hurry, but because it's a jack of all trades, it's not so good with the more complicated task of converting PDFs to Word documents. You'll keep the text, but lose images and formatting.

Opf To Pdf Converter Online Free

It's a handy site to have bookmarked, but if you need to convert a lot of documents then there are better tools around.

• Find out how to convert PDFs to Word documents