<ol><li>browsers: <a href="https://www.mozilla.org/en-US/firefox/new/">Firefox </a>and <a href="https://www.chromium.org/Home">Chromium </a>, </li><li><a href="https://wiki.gnome.org/Apps/Evince">Evince </a>(or Atril on the GNOME 2 fork, <a href="https://opensource.com/article/19/12/mate-linux-desktop">MATE </a>),</li><li> <a href="https://github.com/sumatrapdfreader/sumatrapdf">SumatraPDF </a></li><li>KDE's <a href="https://okular.kde.org/">Okular </a></li><li>All of these have the ability to complete PDF forms, view and make comments, search for text, select text, and so on.</li><li>For a generic, simple, and fast PDF reader, try <a href="https://www.xpdfreader.com/download.html">xpdf </a>.</li></ol>

Reading pdf 

<ol><li>, <a href="https://www.libreoffice.org/download/libreoffice-fresh/">LibreOffice </a> : export functionality</li><li><a href="https://www.scribus.net/">Scribus </a>, <a href="https://inkscape.org/en/">Inkscape </a>, and <a href="https://www.gimp.org/">GIMP </a>all support native PDF export, </li><li> <a href="https://www.cups.org/">CUPS </a>printing system does an excellent job of outputting documents as PDF</li><li> <a href="https://opensource.com/downloads/pandoc-cheat-sheet">Pandoc </a> : shell terminal </li><li> several other solutions, including <a href="https://opensource.com/article/17/9/docbook">Docbook </a>, <a href="https://opensource.com/article/18/11/building-custom-workflows-sphinx">Sphinx </a>, and <a href="https://opensource.com/article/17/6/introduction-latex">LaTeX </a>.</li></ol>

Creating PDFs

<ol><li><a href="https://www.libreoffice.org/discover/draw/">LibreOffice Draw </a>, giving you full access to the text and images.</li><li><a href="https://inkscape.org/en/">Inkscape </a>, If you don't have a font installed, Inkscape (through the <a href="https://poppler.freedesktop.org/">Poppler </a>renderer)</li><li><a href="http://pdfedit.cz/en/index.html">PDFedit </a>,</li><li><a href="https://gitlab.com/pdftk-java">pdftk-java </a>(PDF ToolKit) command useful. It can extract and inject bookmark metadata, rearrange and concatenate pages, combine many PDFs into one</li><li><a href="https://pdfsam.org/">PDFSam </a>has many similar functions, but includes a graphical interface.</li><li>GhostScript command, gs . : low-level tasks == swapping fonts; adjusting resolution of images; dropping images</li></ol>

Edit PDFs

<img src="https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/BIZ_integralintegration.png?itok=clEGBlCP" width="520" height="292" alt="Open and closed source" title="Open and closed source"><h2>
 Do you still use Acrobat for working with PDFs? </h2><div><label for="edit-choice">Choices </label></div>Aren't we supposed to be living in a paperless world by now?I can't be the only person who imagined the office of the future, free from the confines of the eight and a half by eleven sheet (or A4, for my international friends), would have long since arrived. Instead, we've managed to land in an intermediate state of not paperless, but less paper.It could be worse.Between a trusty scanner, email and various other communication tools, and getting really good at organizing my digital archives, I'm not totally unhappy with where we are today. And I do occasionally admit to reading a paper book, sending a postcard, or (gasp) printing something off to give to someone else.Until the world moves a little further from paper, print-ready file formats will continue to permeate our digital landscape as well. And, love it or hate it, PDF, the "<a href="https://en.wikipedia.org/wiki/Portable_Document_Format" dir="ltr">portable document format</a>," seems to be the go-to format for creating and sharing print-ready files, as well as archiving files that originated as print.For years, the only name in the game for working with PDF documents was Adobe Acrobat, whether in the form of their free reader edition or one of their paid editions for PDF creation and editing. But today, there are numerous open source PDF applications which have chipped away at this market dominance. And for Linux users like me, a proprietary application that only runs on Windows or Mac isn't an option anyway.Since PDF files are used in so many different situations for so many different kinds of purposes, you may need to shop around to find the open source alternative to Adobe Acrobat that meets your exact needs. Here are some tools I enjoy.<h2>Reading PDFs</h2>For reading PDFs, these days many people get by without having to use an external application at all. Both <a href="https://www.mozilla.org/en-US/firefox/new/" dir="ltr">Firefox</a> and <a href="https://www.chromium.org/Home" dir="ltr">Chromium</a>, the open source version of Google's Chrome browser, come bundled with in-browser PDF readers, so an external plugin is no longer necessary for most users.For downloaded files, users of GNOME-based Linux distributions have <a href="https://wiki.gnome.org/Apps/Evince" dir="ltr">Evince</a> (or Atril on the GNOME 2 fork, <a href="https://opensource.com/article/19/12/mate-linux-desktop" dir="ltr">MATE</a>), a powerful PDF reader that handles most documents quickly and with ease.&nbsp;Evince has a Windows port as well, although Windows users may also want to check out the GPLv3-licensed <a href="https://github.com/sumatrapdfreader/sumatrapdf" dir="ltr">SumatraPDF</a> as an alternative. KDE's <a href="https://okular.kde.org/" dir="ltr">Okular</a> serves as the PDF reader for the Plasma Desktop. All of these have the ability to complete PDF forms, view and make comments, search for text, select text, and so on.For a generic, simple, and fast PDF reader, try <a href="https://www.xpdfreader.com/download.html" dir="ltr">xpdf</a>.<h2>Creating PDFs</h2>Personally, <a href="https://www.libreoffice.org/download/libreoffice-fresh/" dir="ltr">LibreOffice</a>'s export functionality ends up being the source of 95% of the PDFs I create that weren't built for me by a web application. <a href="https://www.scribus.net/" dir="ltr">Scribus</a>, <a href="https://inkscape.org/en/" dir="ltr">Inkscape</a>, and <a href="https://www.gimp.org/" dir="ltr">GIMP</a> all support native PDF export, too, so no matter what kind of document you need to make -- a complex layout, formatted text, vector or raster image, or some combination -- there's an open source application that meets your needs.For practically every other application, the <a href="https://www.cups.org/" dir="ltr">CUPS</a> printing system does an excellent job of outputting documents as PDF, because printers and PDFs both rely on PostScript to represent data on page (whether the page is digital or physical).If you don't need fancy graphical interfaces, you can also generate PDFs through plain text with a few handy terminal commands. Everyone has their favourite, but probably the most popular is <a href="https://opensource.com/downloads/pandoc-cheat-sheet" dir="ltr">Pandoc</a>, which takes nearly any format of document and translates it to nearly any other format. Its ability to translate text formats is staggering, so it's probably all you really need. However, there are several other solutions, including <a href="https://opensource.com/article/17/9/docbook" dir="ltr">Docbook</a>, <a href="https://opensource.com/article/18/11/building-custom-workflows-sphinx" dir="ltr">Sphinx</a>, and <a href="https://opensource.com/article/17/6/introduction-latex" dir="ltr">LaTeX</a>.<h2>Editing PDFs</h2>Editing is a loaded term. For some people, editing a PDF means changing a few words or a swapping out an old image for a new one, while for others it means altering metadata such as bookmarks, and for still others it means manipulating page order or adjusting print resolution. The authoritative answer nobody ever wants is: don't edit PDFs, edit the source and then export a new PDF. That's not always possible, though, and luckily there are some great tools to make all manner of edits possible.<a href="https://www.libreoffice.org/discover/draw/" dir="ltr">LibreOffice Draw</a> does a fantastic job of editing PDF files, giving you full access to the text and images. There are caveats to this, because of the flexibility of the PDF format. If you haven't installed the fonts used in the PDF, then the flow of text could change due to font substitution,. If the PDF was created from a scan, then you'll only have images of text and not editable text.<a href="https://inkscape.org/en/" dir="ltr">Inkscape</a>, too, does a good job with opening documents created elsewhere, and may be a more intuitive choice if your document is heavy on graphics. If you don't have a font installed, Inkscape (through the <a href="https://poppler.freedesktop.org/" dir="ltr">Poppler</a> renderer) can trace characters so that the appearance of text is maintained even without the actual font data. Of course, that loses the text data (you have only the shapes of letters, not the selectable text itself) but it's a nice feature when appearance matters most.There are standalone tools as well, like the GPLv2 licensed <a href="http://pdfedit.cz/en/index.html" dir="ltr">PDFedit</a>, but I've had such good luck with Inkscape and LibreOffice that I haven't had to use a separate editor in recent years.If your editing tasks are less about the content and more about presentation, you might find the <a href="https://gitlab.com/pdftk-java" dir="ltr">pdftk-java</a> (PDF ToolKit) command useful. It can extract and inject bookmark metadata, rearrange and concatenate pages, combine many PDFs into one, break a PDF apart, and much more. If you're not comfortable in a terminal yet, <a href="https://pdfsam.org/" dir="ltr">PDFSam</a> has many similar functions, but includes a graphical interface.Finally, you can adjust PostScript properties directly with the <a href="https://www.ghostscript.com/" dir="ltr">GhostScript</a> command, gs. GhostScript is an open source interpreter for the PostScript, so you can perform very low-level tasks with it, such as swapping one font for another, or adjusting the resolution of images, or dropping images entirely.Being terminal-based, these are great tools for automated manipulation, too.We know these aren't the only choices in town. Do you work with a lot of PDFs? Have a favorite application to help you along the way? Let us know in the comments below what you use and why it works for you.Are you interested in reading more articles like this? Sign up for our <a href="https://opensource.com/email-newsletter?intcmp=701f2000000tyvNAAQ" dir="ltr">weekly email newsletter</a>.Editor's note: This article was originally published in 2016 and has been updated.<div dir="ltr">
 
 <h2 dir="ltr">
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Explore the open source alternatives to Adobe Acrobat for reading, creating, and editing PDF files.

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Do you still use Acrobat for working with PDFs?

Aren't we supposed to be living in a paperless world by now?

I can't be the only person who imagined the office of the future, free from the confines of the eight and a half by eleven sheet (or A4, for my international friends), would have long since arrived. Instead, we've managed to land in an intermediate state of not paperless, but less paper.

Between a trusty scanner, email and various other communication tools, and getting really good at organizing my digital archives, I'm not totally unhappy with where we are today. And I do occasionally admit to reading a paper book, sending a postcard, or (gasp) printing something off to give to someone else.

Until the world moves a little further from paper, print-ready file formats will continue to permeate our digital landscape as well. And, love it or hate it, PDF, the "<a dir="ltr" href="https://en.wikipedia.org/wiki/Portable_Document_Format">portable document format </a>," seems to be the go-to format for creating and sharing print-ready files, as well as archiving files that originated as print.

For years, the only name in the game for working with PDF documents was Adobe Acrobat, whether in the form of their free reader edition or one of their paid editions for PDF creation and editing. But today, there are numerous open source PDF applications which have chipped away at this market dominance. And for Linux users like me, a proprietary application that only runs on Windows or Mac isn't an option anyway.

Since PDF files are used in so many different situations for so many different kinds of purposes, you may need to shop around to find the open source alternative to Adobe Acrobat that meets your exact needs. Here are some tools I enjoy.

For reading PDFs, these days many people get by without having to use an external application at all. Both <a dir="ltr" href="https://www.mozilla.org/en-US/firefox/new/">Firefox </a>and <a dir="ltr" href="https://www.chromium.org/Home">Chromium </a>, the open source version of Google's Chrome browser, come bundled with in-browser PDF readers, so an external plugin is no longer necessary for most users.

For downloaded files, users of GNOME-based Linux distributions have <a dir="ltr" href="https://wiki.gnome.org/Apps/Evince">Evince </a>(or Atril on the GNOME 2 fork, <a dir="ltr" href="https://opensource.com/article/19/12/mate-linux-desktop">MATE </a>), a powerful PDF reader that handles most documents quickly and with ease. Evince has a Windows port as well, although Windows users may also want to check out the GPLv3-licensed <a dir="ltr" href="https://github.com/sumatrapdfreader/sumatrapdf">SumatraPDF </a>as an alternative. KDE's <a dir="ltr" href="https://okular.kde.org/">Okular </a>serves as the PDF reader for the Plasma Desktop. All of these have the ability to complete PDF forms, view and make comments, search for text, select text, and so on.

For a generic, simple, and fast PDF reader, try <a dir="ltr" href="https://www.xpdfreader.com/download.html">xpdf </a>.

Personally, <a dir="ltr" href="https://www.libreoffice.org/download/libreoffice-fresh/">LibreOffice </a>'s export functionality ends up being the source of 95% of the PDFs I create that weren't built for me by a web application. <a dir="ltr" href="https://www.scribus.net/">Scribus </a>, <a dir="ltr" href="https://inkscape.org/en/">Inkscape </a>, and <a dir="ltr" href="https://www.gimp.org/">GIMP </a>all support native PDF export, too, so no matter what kind of document you need to make -- a complex layout, formatted text, vector or raster image, or some combination -- there's an open source application that meets your needs.

For practically every other application, the <a dir="ltr" href="https://www.cups.org/">CUPS </a>printing system does an excellent job of outputting documents as PDF, because printers and PDFs both rely on PostScript to represent data on page (whether the page is digital or physical).

If you don't need fancy graphical interfaces, you can also generate PDFs through plain text with a few handy terminal commands. Everyone has their favourite, but probably the most popular is <a dir="ltr" href="https://opensource.com/downloads/pandoc-cheat-sheet">Pandoc </a>, which takes nearly any format of document and translates it to nearly any other format. Its ability to translate text formats is staggering, so it's probably all you really need. However, there are several other solutions, including <a dir="ltr" href="https://opensource.com/article/17/9/docbook">Docbook </a>, <a dir="ltr" href="https://opensource.com/article/18/11/building-custom-workflows-sphinx">Sphinx </a>, and <a dir="ltr" href="https://opensource.com/article/17/6/introduction-latex">LaTeX </a>.

Editing is a loaded term. For some people, editing a PDF means changing a few words or a swapping out an old image for a new one, while for others it means altering metadata such as bookmarks, and for still others it means manipulating page order or adjusting print resolution. The authoritative answer nobody ever wants is: don't edit PDFs, edit the source and then export a new PDF. That's not always possible, though, and luckily there are some great tools to make all manner of edits possible.

<a dir="ltr" href="https://www.libreoffice.org/discover/draw/">LibreOffice Draw </a>does a fantastic job of editing PDF files, giving you full access to the text and images. There are caveats to this, because of the flexibility of the PDF format. If you haven't installed the fonts used in the PDF, then the flow of text could change due to font substitution,. If the PDF was created from a scan, then you'll only have images of text and not editable text.

<a dir="ltr" href="https://inkscape.org/en/">Inkscape </a>, too, does a good job with opening documents created elsewhere, and may be a more intuitive choice if your document is heavy on graphics. If you don't have a font installed, Inkscape (through the <a dir="ltr" href="https://poppler.freedesktop.org/">Poppler </a>renderer) can trace characters so that the appearance of text is maintained even without the actual font data. Of course, that loses the text data (you have only the shapes of letters, not the selectable text itself) but it's a nice feature when appearance matters most.

There are standalone tools as well, like the GPLv2 licensed <a dir="ltr" href="http://pdfedit.cz/en/index.html">PDFedit </a>, but I've had such good luck with Inkscape and LibreOffice that I haven't had to use a separate editor in recent years.

If your editing tasks are less about the content and more about presentation, you might find the <a dir="ltr" href="https://gitlab.com/pdftk-java">pdftk-java </a>(PDF ToolKit) command useful. It can extract and inject bookmark metadata, rearrange and concatenate pages, combine many PDFs into one, break a PDF apart, and much more. If you're not comfortable in a terminal yet, <a dir="ltr" href="https://pdfsam.org/">PDFSam </a>has many similar functions, but includes a graphical interface.

Finally, you can adjust PostScript properties directly with the <a dir="ltr" href="https://www.ghostscript.com/">GhostScript </a>command, gs . GhostScript is an open source interpreter for the PostScript, so you can perform very low-level tasks with it, such as swapping one font for another, or adjusting the resolution of images, or dropping images entirely.

Being terminal-based, these are great tools for automated manipulation, too.

We know these aren't the only choices in town. Do you work with a lot of PDFs? Have a favorite application to help you along the way? Let us know in the comments below what you use and why it works for you.

Are you interested in reading more articles like this? Sign up for our <a dir="ltr" href="https://opensource.com/email-newsletter?intcmp=701f2000000tyvNAAQ">weekly email newsletter </a>.

Editor's note: This article was originally published in 2016 and has been updated.

Open source alternatives to Adobe Acrobat for PDFs

Reading pdf

Creating PDFs

Edit PDFs

Vishwanath Gopu Ramdas's ideas are part of this journey:

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