Hello,
I'm in love with your game. With friends, we've made a great city in Survival and our map is getting corrupted.
I have noticed that when I went in a big travel to make big maps of what's around us, the weight of our world passed from 100Mo to 700Mo. I love to make maps and watch those to see the expansion of our work.
But, recently, I've made 3 more maps and the weight grow to 900Mo. Since that, anytime we play 10 minutes on it (with friends), the world get corrupted and no playable.
(Yes, I had many back-up just in case... And there we are)
We spend a huge amount of time to make that city, especially in Survival. I suspect the maps to be the origins of the huge increasing of data/weight of our world. (I tried to make an 1/4 maps of 7x6 to have a clear view on our kingdom... Since i began that new map, our world gets corrupted, i couldn't even finish it)
We are on ps4. I have an old back up of three days ago so we wont lose our world but it's pretty annoying.
In rage, I throw to lava my maps but the world keeps the same weight. I did know that it wouldn't erased those but if there were any chances to decrease the data weight, I would take it. Any idea to help me with this ?
Isn't it possible to make a tool of "weigh less/off-load of world" or an update which could save area where buildings are and replace them in the same seed without discovered lands outside the "safe spot" ? Like "Enter a square of positioning [xxx;yyy;zzz]-[xxx;yyy;zzz] that need to be saved and replaced" to lightening the weight of data ? Like erasing maps done that are non-essential for the player buildings... ? Or is there any way to lightening the map creation which seems to be the reason of my grown weigth of data ?
In the same vein, my world is "endless/infinity". Would it be possible to make it limited to off-load it like saving 5k of blocks around the center point given ?
Incidentally, I would be very interested in the possibility of exporting my worlds to my computer account 'cause I just went on ps4 to play with friends (which is not necessary now that there is crossplatform). But i'm a computer player and I just understood now how much i like your game.
I don't want to rebuild what I have already done. That's what block me to play any more Minecraft for the moment. If I can't export or save my work, i don't think i will start anything new again... Sadly... :,(
Right under, pictures of our survival town, called Petunia ('cause why not).
And the pictures of my map room. Then, i tried to back up the most recent world which stayed at 700Mo and no getting more than that. Not sure those will stay under that critical mass very long. :,(
I hope my english was understandable... 🙂
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First of all, this is in the wrong project, you should have published this in Minecraft (Bedrock codebase) or MCPE.
Second, this is not a bug. You explored many parts of your world and the file size increased. To reduce the file size, you would have to use a third-party tool to delete the chunks without buildings or that are not essential to your buildings.
Third, you suggested that the developers make a tool where you would delete chunks where no buildings would be. This is not a site for suggestions, but feedback.minecraft.net is. Publish your suggestion about adding an official tool to delete chunks there.

First of all, this is in the wrong project, you should have published this in Minecraft (Bedrock codebase) or MCPE.
Second, this is not a bug. You explored many parts of your world and the file size increased. To reduce the file size, you would have to use a third-party tool to delete the chunks without buildings or that are not essential to your buildings.
Third, you suggested that the developers make a tool where you would delete chunks where no buildings would be. This is not a site for suggestions, but feedback.minecraft.net is. Publish your suggestion about adding an official tool to delete chunks there.
Thank you for your report!
We're actually already tracking the issue of corruption when exploring a world under MCPE-55137, so I've requested this be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Regarding the rest of your ticket, the world file size will increase when you explore, the more you explore the more of the world that's generated. Regarding resetting dimensions you will need to contact the community support discord linked below. We don't have the resources to provide tech support here.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki

Thank you for your report!
We're actually already tracking the issue of corruption when exploring a world under MCPE-55137, so I've requested this be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Regarding the rest of your ticket, the world file size will increase when you explore, the more you explore the more of the world that's generated. Regarding resetting dimensions you will need to contact the community support discord linked below. We don't have the resources to provide tech support here.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
The bug here is the "world corruption" error. While it sometimes happens to people with smaller worlds it affects larger worlds more frequently. Most people begin noticing the issue once the world size starts getting close to about a gig. Exploring and loading new chunks is the #1 way of increasing your world's file size. It's not your fault. This is a known issue. Head over to MCPE-55137 and PLEASE vote on the issue. Tell your worldmates to do the same.

The bug here is the "world corruption" error. While it sometimes happens to people with smaller worlds it affects larger worlds more frequently. Most people begin noticing the issue once the world size starts getting close to about a gig. Exploring and loading new chunks is the #1 way of increasing your world's file size. It's not your fault. This is a known issue. Head over to MCPE-55137 and PLEASE vote on the issue. Tell your worldmates to do the same.
Now I'm complaining on the forum, my worldmates think it's done and that we won't get back our world stable. So, they uninstall Minecraft and don't want to come back. They are as much disgusted then me. But I want to do everything possible to bring back my world safe. I played too much time on it to accept it's lost.
If exploring is dangerous to keep your world safe (yes, my world was endless, i did not care of the settings when i began), they should put limits 'cause they can't assure that the size won't get us to corruption. I mean, if you could bring back precious parts of your maps, then corruption wouldn't be a big deal. But, If anytime you got corrupted, you have to pray that your back-up are not potentialy corrupted too... or just admit it's the end of that world... Damn, I don't want to began any things I could be so sad to lose after all...
I voted the issue. I hope there will be a tool someday 'cause no others games disappointed me like that. Don't get me wrong, i loved Minecraft... But if time spend on it can be lost forever, I won't try it anymore.

Now I'm complaining on the forum, my worldmates think it's done and that we won't get back our world stable. So, they uninstall Minecraft and don't want to come back. They are as much disgusted then me. But I want to do everything possible to bring back my world safe. I played too much time on it to accept it's lost.
If exploring is dangerous to keep your world safe (yes, my world was endless, i did not care of the settings when i began), they should put limits 'cause they can't assure that the size won't get us to corruption. I mean, if you could bring back precious parts of your maps, then corruption wouldn't be a big deal. But, If anytime you got corrupted, you have to pray that your back-up are not potentialy corrupted too... or just admit it's the end of that world... Damn, I don't want to began any things I could be so sad to lose after all...
I voted the issue. I hope there will be a tool someday 'cause no others games disappointed me like that. Don't get me wrong, i loved Minecraft... But if time spend on it can be lost forever, I won't try it anymore.
Since we discovered Minecraft Realm, I have been able to export my map ps4 to the realm-cloud (server) and, then, from it to my computer account. Why nobody talked to me that Realm was proposing an Export system that could saved my Pétunia ? Now, i'm no more angry. I'm so relieved !
I haven't played in a year before one of my friend told me what Minecraft Realm was about. I wouldn't believed if he didn't insist that much.
So, case closed. I am an happy consummer now. Please make sure that Minecraft remain stable 😃

Since we discovered Minecraft Realm, I have been able to export my map ps4 to the realm-cloud (server) and, then, from it to my computer account. Why nobody talked to me that Realm was proposing an Export system that could saved my Pétunia ? Now, i'm no more angry. I'm so relieved !
I haven't played in a year before one of my friend told me what Minecraft Realm was about. I wouldn't believed if he didn't insist that much.
So, case closed. I am an happy consummer now. Please make sure that Minecraft remain stable 😃