Reducing Your Minecraft World Save File Size Dramatically!!

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Level 30 : Artisan Pixel Puncher
Hello Fellow Minecrafters! Today I am going to teach you on how to reduce your Minecraft world save's file size. eg. My world was originally 74.44MB but I reduced it to 23.8MB. This is especially useful if you are going to upload your world onto the internet or if your computer is full. Here are the steps for reduction:

Locate your save file at the following directory:
Mac: FinderusernameLibraryApplication Supportminecraft
Vista: C:UsersusernameAppDataRoaming.minecraft

Then go into the folder 'saves'. Locate your world save folder. eg. Shyao6644's Ultimate World. Then make a backup of the whole save folder onto your desktop. Then follow these steps on reducing the file size:
1. In the saves folder go inside your world save folder and then delete all the unnecessary mod files if you have any. eg. aether.dat . All the files and folders you should have left over are now level.dat, level.dat_old, region, session.lock, spc.settings and data.
2. Now go into the folder named data. Now in this folder is your map saves. If you opened an unnecessary map on minecraft then you should delete it. eg. In minecraft you opened 2 maps, Map_0 and Map_1, but you didn't need Map_1 so in your save folder you can delete map_1.dat and in minecraft the save for that map is gone and the map that originally had that save on it is now a blank new map. The files you should have left over are idcounts.dat and your needed map saves.
3. Caution: This step reduces your save dramatically but if you do it wrong you will mess up your save so make sure you have a backup copy of the original on your computer somewhere!!!! Okay now that we got that through, go into your folder named region. In here you will find your actual saves of your world. eg. Creeper holes and buildings. In here you can delete all the files except r.-1.-1.mcr, r.-1.0.mcr, r.-2.-1.mcr, r.-2.0.mcr, r.0.-1.mcr and r.0.0.mcr (r.0.0.mcr can be deleted I think because I did it once and it still worked but just leave it alone to be safe).

Okay now check your world save file folder and it should be around 20-30MB (Big reduction eh?). Now make a backup of your now reducted save somewhere on your computer. Go into minecraft and check if your world is still the same. If not then I don't know what went wrong because it works for me. If it doesn't work then just copy the backup of the original back into the saves folder and retry. Note:In minecraft the world will still say it's the original file size because it to lazy to change to the reducted size. :D Okay now if it works then your world is now reducted and ready for your use! Hoped this helped! ;P

Your Sincerely,
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