Drawing Diff

Download Scorch Works Home


Drawing Diff is a tool for comparing black and white images (not greyscale). The intended purpose is to compare engineering drawings after a revision or during the drawing creation process to compare incremental changes to the drawing after a drawing has been changed.

The input to Drawing Diff is an old version of the drawing or image and a new version of the drawing or image. The input formate can be a raster image format (TIF, PNG etc.) or a PDF file. PDF files can be multiple pages.

The differences in the two documents are displayed using colors to indicate the areas of the image that have changed. By default old markings are colored blue, new markings are colored red and markings common to both images are black. The additional feature to aid in comparing the images is a highlight feature that will highlight the areas in which changes have occurred.

Drawng Diff is a free open source program released under the GNU General Public License (GPLv3).



(Right click on the link and select "Save target as" or "Save link as")
Source Code Files Windows Executable Files

If the windows executable does not work right away install the
“Microsoft Visual C++ 2015 Redistributable”. Pypy has a dependency to this package.

Change Log

Changes in Version 0.01

- Initial Release

Changes in Version 0.02

- Changed to use Ghostscript executable in current folder (Ghostscript is now included in the windows executable download)

Changes in Version 0.03

- Fixed color selectors in the general settings
- Colors and Display Option are now saved in the settings file when the save button is clicked

Introduction Video