Batch tool, is a blender addon that allow you to run your script on many files at once, so if you need to fix many files with the same fix, you can do it with only one click!

To use it, you first need to write your fixing script, then save your script as a python file, and then set in the addon the path to ypur fixing script, and the path for the folder with all of yours blend files that you want to fix. if you want, you can also check the "Sub folders" option, so your fixing script will fix all the blend file that also in the sub folders (and not only the files in the main folders).
Press the run button and blender will make the rest of the job

*In your fixing script, don't forget to add at the end a line for saving your blend file if you need.

*You need to know a little bit of scripting to make your own fixing scripts.

*Its always good to backup your files before running your fixing scripts.

Change log:

V1.4 - 18/12/2022: Add the option to run the script also on sub folders.