Today's Free App of the Day is PDF Converter by IonaWorks (Ad-Free)
This is a PDF converter and viewer.
It worked well on the documents I tried it with--though the PDFs were slightly larger than the documents I converted, I didn't have problems with extra blank pages that were mentioned in the one one-star review. I used two kinds of Word documents and a JPG.
I'm not sure where the files it creates are saved, but they're immediately visible when you open the app. You can tap on File Manager to import an app for conversion, and it will allow you to use Dropbox or an installed file explorer program to find your file to import. You can than use the "Share" option to export the converted file back out to your preferred location, or to email the file to someone.
4 of 6 reviews are four stars and above.
These apps are compatible with the original Fire and with my Fire HDXs. To tell if an app works for your Fire HD or other Android device registered to your Amazon account, click on the above link and look on the right side of the web page. Amazon will tell you if it will work with your registered device.
Also check out the other digital deals from Amazon, including great deals on MP3s and videos: