This external tool is an exe you can use to reduce the number of saves present in your MO2 saves folders. It will remove up to half of the saves for the selected character in the selected MO2 profile. It always saves the most recent 10 saves and the first 5 saves for that character. It will delete every other save between those saves.
This tool is designed to work with MO2. Other mod managers will likely not work.
Permissions and credits
Credits and distribution permission
Other user's assetsAll the assets in this file belong to the author, or are from free-to-use modder's resources
Upload permissionYou can upload this file to other sites but you must credit me as the creator of the file
Modification permissionYou are allowed to modify my files and release bug fixes or improve on the features so long as you credit me as the original creator
Conversion permissionYou can convert this file to work with other games as long as you credit me as the creator of the file
Asset use permissionYou are allowed to use the assets in this file without permission or crediting me
Asset use permission in mods/files that are being soldYou are not allowed to use assets from this file in any mods/files that are being sold, for money, on Steam Workshop or other platforms
Asset use permission in mods/files that earn donation pointsYou are allowed to earn Donation Points for your mods if they use my assets
Author notes
This author has not provided any additional notes regarding file permissions
File credits
Credit to https://github.com/Ryan-rsm-McKenzie/NQS_NamedQuicksaves/blob/master/README.md for breaking down the information in the save file name
Donation Points system
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Changelogs
Version 1.1.0
This update now allows you to choose the Documents\My Games\Skyrim Special Edition\saves folder to manage on those saves.
If updating, you should also delete the old "mo2_save_file_manager.json" located in the same folder as the old exe.
Version 1.0.1
Fixed unexpected result when the previously used character was no longer present on the profile
Version 1.0
initial upload
This tool allows you to reduce the number of saves present in your Mod Organizer 2 (MO2) saves folders. You must select the profile and character for which you wish to manage saves. You should run this tool every time you think you have too many saves on a character. In the tool, character names will be followed by the GMT +0 time and date that the first save of that character in that saves folder was made.
New in 1.1.0: Now you can also choose the Default Saves checkbox and point it at the "Documents\My Games\Skyrim Special Edition\saves" folder (the default Skyrim SE save location).
When you first run the program a settings file will be generated in the same folder as the exe. This allows the program to save your Mod Organizer\Skyrim SE folder location, and Documents\My Games\Skyrim Special Edition\saves folder location as well as your last run profile and character, for convenience.
Example: There are 100 saves for the character named Prisoner Bob. When you use this program, it will not delete saves 1-5 or saves 91-100. It will delete every other save between those saves, so save 6, 8, 10, 12, 14, [and so on] 84, 86, 88, and 90.
This effectively reduces the number of saves by half while preserving important saves and not just deleting the bottom half of your save list.
This tool was written in python (source in misc downloads) and compiled into an .exe using pyinstaller (spec file in misc downloads). Just in case you'd rather compile for yourself.
The UI isn't perfect so some things might look weird, but it does Just Work. See the mod images for a preview.
Other notes: it is possible to have save files which end with .tmp or .bak in your saves folder. This program does not do anything to those files. It will ignore them. However, it will delete .skse save files that do not have a corresponding .ess save file (these are orphaned skse cosaves).
Disclaimer: Since this is a custom-built application, some anti-viruses may flag it as harmful. I can't change that, but if you wish to verify how/what the tool does, the source file is posted in the optional downloads.