SUMMARY/Cheat Sheet (2014 Jan 18)
Gnome or other Desktop Environment (DE)? Use Xournal for highlighting, note-taking, etc.
For smaller text size comments, use Flpsed, which allows you to adjust size of the text you are superimposing over the PDF background itself (good for filling out non-form PDF permission sheets, applications, etc. Xournal’s text can sometimes be too large and clunky to fit in the space provided in PDF sheets/forms). Update: Ha! Somehow I missed it. You can easily change the font size and font type in Xournal. So no need for Flpsed.
KDE? Consider using Okular. In non-KDE, may not be worth it. Dunno. Not sure how well it saves changes. The only thing that is clearly superior is the fact that if you have a text pdf, its highlighting can be straight/with the line, whereas in Xournal, highlighting is freehand, and so will be less neat visually. [If you must use Okular in GNOME and can’t find it from your Gnome-shell, use Alt+F2 –> “okular” and it will open.]
For saving changes permanently, you might need to EXPORT as PDF, not save as PDF.
For including signature, best to take a picture of your own signature, use GIMP (Photoshop) to make an image (export as .jpg), using contrast and brightness to ensure a pure white background (or else it just looks bad). Then crop and reduce pixels to a small size to fit in “signature” boxes in pdf forms/sheets. Then just copy the image and paste it into your pdf form (opened via GIMP), and export as pdf. Continue reading