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PDF Annotator

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PDF Annotator

PDF Annotator lets the user open any PDF file and add annotations, using the mouse or a Tablet PC pen, directly on the PDF file’s pages. The annotated documents can then be saved directly back to PDF format. In this way, anyone can read or print the annotated PDF documents.

The annotated documents you can also easily attach to emails. Previously, annotating, commenting or proofreading document received for review in PDF file format was possible only by using multiple software products in a row. Or only by printing the document and adding comments manually.

With PDF Annotator, you also can add annotations in a natural way – using a pen – but everything remains in digital format. PDF Annotator allows commenting of PDF files in a single step. The user no longer needs to print a PDF document to annotate it.

A PDF file received for review you can can open in PDF Annotator, comment on the PC with the mouse or on the Tablet PC using the pen, then save the file back to PDF file in a single step. This saves both resources and time. With the Tablet PC, a PDF document is treated just like a normal printed document. The user just writes or draws his ideas and thoughts on the existing document.

PDF Annotator also lets you insert blank pages to gain more space for your comments. You can use it to fill in forms, and you can even use it for note-taking by creating new blank PDF documents.

PDF Annotator Features:

  • Add notes and annotations to any PDF document – comments, corrections, signatures, highlighting, even designs and drawings.
  • Save annotations in the original file. Share them with coworkers, email them to partners or back to the authors. With no special software needed to view the marked up document.
  • Type comments on top of PDF content, paste in images, use a stylus or drawing tablet if you have them.
  • Restore to the original document at any time. Remove or hide all markup with just one click.
  • Insert blank pages for more space. Or put comments at any place on the pages.

PDF Annotator 64-bit

As a true 64-bit application, PDF Annotator can now access significantly more memory on 64-bit systems.

  • Enables loading larger files, and editing more documents at the same time, than with the 32-bit version.
  • Setup will automatically install the correct version for your operating system.

Select and Edit Annotations

While moving, resizing or rotating annotations, all changes display immediately.

  • Enables exact annotation placement.
  • Larger appearance of selection rectangles and size grips on high resolution displays.

Dimension Tool

Dimensions are annotations that become part of the PDF document (cf. the Measure tool).

  • Dimensions consist of extension lines, dimension line, and editable dimension text.
  • Select a predefined or custom scale.
  • Turn display of dimension unit on and off.

Rotate Annotations

  • Rotate snaps to 15° steps while CTRL key is pressed.

Measure Tool

Measure tool to extract measures from PDF documents:

  • Improved appearance of measured distances and areas.
  • Measure results stand out better with large and clear display directly within the document (instead of small hint windows).

Measure Angles

Now you can measure:

  • Distances
  • Perimeters (traverses)
  • Areas
  • Angles

Create Links

Links are text annotations that, when clicked, jump to:

  • a web URL,
  • a specific position (page) in the current document, or
  • an external document.
  • Define link text styles (e.g. blue, underline) directly within the Configure Link window.

Intelligent Auto Smooth

Extended functionality for the Auto Smooth feature available for pen and marker tools:

  • Intelligent geometric object recognition (rectangles, squares, circles).
  • Start and end points will automatically snap to, or be moved towards existing lines.
  • Automatically closes circular lines by moving the end points to the start points.

Intelligent Auto Connect

New Connect Lines feature now available for line and arrow tools:

  • Start and end points will automatically snap to, or be moved towards existing lines.

Laser Pointer Tool for Presentations

The laser pointer is a large red circle that can easily be located even from a distance.

  • Activate via “Tool, Laser Pointer” or by pressing the letter “o” key.
  • Back to previously used tool with ESC key.
  • Draw temporarily with the laser pointer: After lifting the pen (or releasing the mouse button), the drawn mark-up disappears.

Extract Text

When using the Extract Text feature, after selecting some text, the context menu won’t open automatically any more.

  • Now, just click “Edit, Copy” or press CTRL+C to copy the selected text to the clipboard.
  • All features previously available on the context menu are now accessible directly from the toolbar above the document.

Move Bookmarks with Drag’n’Drop

In the sidebar:

  • Move bookmarks with the mouse using drag’n’drop.
  • The destination position will be outlined exactly.

“Print” Command on Explorer Menus

If PDF Annotator has been set up as the default application for PDF files, the Windows Explorer context menu will now include a “Print” command.

  • Print PDF files without having to open them in PDF Annotator first.
  • Print just one, or multiple documents at once.

Use your Pen as a Clicker

In full screen presentations, press the button at the end of the pen to advance to the next page.

  • Single click: Advance to next page.
  • Press and hold: Back to previous page.
  • Requirements: 3rd Gen Microsoft Surface Pen, Windows 10.

Arrow Appearance

  • Arrowheads now draw with sharp edges (vs. round edges in previous versions).
  • Reference points of all arrowheads have been corrected to point exactly to the tip/end.
  • Arrowheads now draw in a size well-balanced to the line width.

Accelerated App Start

The application startup time has been further reduced.

  • On new installations, the Quick Start option now gets enabled automatically.
  • You can also enable the “Start with Windows” option under “Extras, Settings, Preferences, Quick Start”.

And more…

  • Faster text search.
  • Improved text cursor appearance (especially on high resolution displays).
  • Scroll the toolbox with your finger.

Changes in PDF Annotator (2021-10-13):

  • Changed: Predefined line widths now correspond to the same physical width on any device. In previous versions, the six predefined line widths (“Thin” to “Very thick” under the “Line Width” dropdown menu) resulted in different physical widths, depending on your screen settings (dpi), so that they were different from case to case. This has now been fixed.
    Also, the predefined line widths in fullscreen mode (in the quick configuration box, clicking the active tool button a second time) have been set to the same values as in regular (windowed) mode.
    Note: These changes do not affect already defined tools, favorites, stamps or annotations.
  • Improved: Faster file saving when using large numbers of identical picture stamps.
  • Improved: Faster snapshot creation for very large snapshots (whole page, large snapshot resolution).
  • More minor fixes and improvements

Changes in PDF Annotator (2021-10-08):

  • Windows 11 Support
  • Fixed: Touch scrolling caused jumps to incorrect pages when an external screen had just been removed.
  • Fixed: Documents on inactive document tabs jumped to first page after rotating the screen.
  • Fixed: Pen width did not restore correctly after a switch to a screen running under a different DPI setting.
  • Fixed: Color picker displayed black background in some situations.
  • Fixed: Clicking certain bookmarks resulted in jumps to incorrect positions.
  • Fixed: Text extraction did not find certain text.
  • Fixed: After adding/removing USB devices, application would not respond for up to five seconds.
  • More minor fixes and improvements

Changes in PDF Annotator (2021-09-20):

  • Fixed: Error using the Eraser tool in “Split Strokes” mode.
  • Fixed: Error message on specific actions while customizing buttons in Full Screen mode.
  • More minor fixes and improvements

Changes in PDF Annotator (2021-07-15):

  • Maintenance release combining various user experience enhancements, performance improvements, general improvements, and fixed issues.

Changes in PDF Annotator (2021-04-12):

  • New: “Show Trace” option to deactivate temporary drawing with the Pointer or Laserpointer tools.
  • New “Factory Reset” feature, available under Extras, Settings, Reset.
  • Color selection: Display selected color names immediately below the color picker. Enlarged display on active “Touch Mode”.
  • Display PDF comments created in third party apps as not clickable, when configured as “read only” according to the PDF standard.
  • Stamp toolboxes now display the currently selected stamp when opening the toolboxes.
  • Using the “Pointer” or “Laser Pointer” tools, double clicks will now be ignored, and will not select the underlying annotations.- Fixed: When working with PDF documents with many pages, under certain conditions the pen and marker tools would not be available any more after switching between view layouts.
  • Fixed: When working with PDF documents with many pages, under certain conditions the pen and marker tools would not be available any more after switching between view layouts.
  • Fixed: Problems detecting the use of the end of pen eraser.
  • More minor fixes and improvements

Changes in PDF Annotator (2021-02-18):

  • Additional “Dot” mouse pointers available under “Settings, Tools, Cursor”.
  • Improved zoom gesture handling.
  • Performance improvements during zoom.
  • Improved visualization of documents with differently sized pages in “Two Pages – Continuous” page layout.
  • After clicking a page with the Snapshot tool, now a confirmation message box gets displayed to choose between taking a snapshot of the whole page, or only the currently visible page area.
  • Faster loading of documents that do not yet contain any annotations.
  • Maintain current selection when zooming or switching page layouts.
  • Allow entering Unicode characters into text annotations by typing their hexadecimal code and pressing ALT+X.
  • Fixed: When exiting the application immediately from within Fullscreen view, the toolbars configuration could become corrupted and needed to be reset using the “Reset all Toolbars” command.
  • Fixed: Using Zoom in a non-continuous page layout could cause jumps to the wrong pages. This could also result in just recently added ink annotations being handled incorrectly.
  • Fixed: Front and rear camera of Microsoft Surface devices could not get differentiated any more after a change by Microsoft. The camera display did not mirror correctly due to that issue.
  • Fixed: Text extraction did not calculate correctly in specific cases.
  • Fixed: The list of available printers was not refreshed correctly after adding new printers.
  • Fixed: After attaching an external graphics tablet, the “Draw with Finger” setting was not set correctly.
  • Fixed: Performance issue in the side bar page preview on documents with many very large pages.
  • More minor fixes and improvements

Homepage –

Supported Operating Systems Windows 7, 8, 8.1, 10, 11.

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