Available in version 3.3 or later.
You can add / edit annotations in PDF files.
Highlight text with
Most common annotation is highlighting of text: select text and press
a. This creates a highlight annotation in yellow color:
Here I highlighted word
USAGE and pressed
Saving annotations back to PDF file
Notice in toolbar (upper right) we show:
You have unsaved annotations.
When you close the document (or exit the app) and have unsaved
annotations, SumatraPDF will ask if you want to save them:
If you close the dialog or choose
will be lost.
Save changes to existing PDF will over-write the PDF with
newly added annotations.
Save changes to a new PDF will allow you to save as a new
Open annotation editor
If you press
A (upper case i.e.
will create a highlight annotation (same as lower case
but also open annotation editor window.
Another way to open annotation editor is to use context menu (right
mouse click or
Shift-F10) and use
Other annotations for selected text
When you selected a text, you can create the following annotations from
- strike out
- squiggly underline
We also copy selected text to a clipboard so that e.g. you can use
Ctrl-V to paste it into
Contents property of
Other annotation types
You can also create annotation object at your mouse location:
- free text
All those commands will open annotation editor:
Here we have a text annotation in the editor.
You can delete annotations, change color, text and other attributes.
Select annotation from page in editor
When you have many annotations on the page, it's hard to locate
the desired annotation in the editor list.
To select an annotation in the editor, place the mouse cursor over an
annotation in the page, right click for context menu and use
Select Annotation in Editor.
To move an annotation on the page, left click with mouse and drag to
Customize highlight color
To change default color for highlight annotation (created with keyboard
Settings \ Advanced Options... menu and change
HighlightColor value. Default is
This is a first version of annotation editing. We don't yet
support all annotation types and can't do everything that other PDF
editing apps can do.
The future will be driven by your feedback. If there are features
missing or there are better ways of doing things, let me know in the
When providing feedback:
- tell us what
- tell us why. Context is important for prioritizing features. Is new
feature / idea something that you absolutely need or is it just a nice
- you might be familiar how other PDF editors work. When referencing
feature or UI ideas coming from other apps, tell us which app it is.
Screenshots are better than words when describing UI ideas.