The Chrome build from Google has a Chrome PDF Viewer plugin which is really nice. But, the Chromium builds don't seem to have it (nothing shows up in
How do I get the plugin in Chromium on Ubuntu?
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Because the PDF plugin is not free software, i.e. it can only be included with the non-free Google Chrome browser.
See http://code.google.com/p/chromium/issues/detail?id=50852#c16 for a statement.
You have two solutions that I can see here (applied to Ubuntu 11.10) [This was inspired by comments above and other sources I found]
Here's how I did that...
Note: The new plugins never showed up in my extension listing but suddenly just started working properly. By copy all *.so you are getting support for Flash, FFMPEG, and PDF support.
If you want to copy each individual item here is a listing of them for you to hand pick.
Chromium now have a pdf viewer on chrome store based on pdf.js that works like a charm. https://chrome.google.com/webstore/detail/pdf-viewer/oemmndcbldboiebfnladdacbdfmadadm
For Ubuntu or Debian (personally tested on Debian Wheezy - 64-bit build):
From trogdor1138's comment at archlinux site, get the google-chrome rpm:
Install the cpio and rpm2cpio packages to extract the files from the downloaded rpm:
sudo apt-get install cpio rpm2cpio
Make a directory since the contents don't have a single directory structure (making it easier to clean back up if you like) and then extract:
mkdir chrome cd chrome rpm2cpio ../google-chrome-stable-30.0.1599.66-1.x86_64.rpm | cpio -vid
Install the libpdf.so library in your chromium's lib directory:
For Debian (verified against my 64-bit build):
sudo install -m644 ./opt/google/chrome/libpdf.so /usr/lib/chromium/
For Ubuntu, I believe this is where you'd install it:
sudo install -m644 ./opt/google/chrome/libpdf.so /usr/lib/chromium-browser/
Now just restart your browser, visit chrome://plugins/ to verify it's listed, and then open a PDF! :)
Open this terminal and run this command:
curl -O https://raw.github.com/thehodapp/bash-scripts/master/update-chromium-pdf; chmod +x update-chromium-pdf; ./update-chromium-pdf; rm update-chromium-pdf
This command downloads a script I wrote which will download the latest version of Chrome, pull out the PDF library, install it (which will require root password), and then it will delete itself. You can run this at any time to update to the latest stable version of Google's PDF library.
After running this command, make sure you restart Chromium and enable the plugin in
Instal Google's own extension from the Chrome Web Store https://chrome.google.com/webstore/detail/docs-pdfpowerpoint-viewer/nnbmlagghjjcbdhgmkedmbmedengocbn
Chromium team already set the plugin as Open Source: https://code.google.com/p/chromium/issues/detail?id=50852#c16
So, if you install Chromium you will already see the plugin enabled with chrome://plugins/