PZ 42.13 Map Cleaner 2026 (Including safehouse detection and fast upload)

I made a Project Zomboid 42.13 MP Map chunk/cell cleaner tool for the latest version with features not seen in other tools of its kind and an accessible interface.

ALWAYS BACKUP YOUR SAVES BEFORE USE. I HOLD NO RESPONSIBILITY FOR ANY PERSONAL ISSUES OR LOSSES WHEN USING THIS TOOL

https://hdrcade-tylerfreeman.github.io/pz-b42-map-cleaner/

Video Tutorial

https://youtu.be/a2huo5vsyIw?sub_confirmation=1 > Fast mode (includes python helper tool) allows instant upload and high performance when used with the web tool.

> Legacy mode - traditional save folder upload (not recommended - slow with large saves and less features).

> Safehouse detection (using the python helper tool) detects user safehouses, can add padding and see owner/occupants of each safehouse by hovering over them in the map.

> Map representation (although it is pretty accurate in testing it may have some 'tile drift' so please only rely on it as a loose representation and rely more on features such as 'safehouse padding' and the cell coordinate exclusions).

> Inverse selection. change from saving cells to removing cells in one click.

> Drag selection. drag boxes onto the map for grid selection.

> Grid coordinate based selection. insert line-seperated coordinates for 100% accurate removal. Find the numbers using b42 map online and enabling 'grid'. Look for the yellow numbers in the corner of the grid squares.

> Import/Export grid coordinates, safehouse settings or full settings.

> Dry run test function. test out a the removal script before doing it in practise.

> Windows and Linux compatible prompt will ask if you want a .bat or .sh

> Guides, Legend and 'idiot proof' interface and operation.

QThe helper tool/bat isn't downloading/opening

AAllow the download through your web browser. In Windows you may have to right-click the file, goto properties and press the 'unblock' checkbox.

QTransferring map_x_y.bin files to a new wipe is missing animals/vehicles etc.

AYou will also need to transfer the files in your save folder root (entity_data.bin, worlddictionary.bin, map_animals.bin, vehicles.db, players.db, journal etc.)

(NOT RECOMMENDED FOR BEGINNERS) If you want to regenerate your entire save folder delete/rename your old one and start server once. Stop it then you can upload your processed map files into the map folder and use any root files you wish to keep such as player.db (player saves) map_t.bin (date and time) vehicles.db (vehicle saves) worlddictionary (required for transfer) map_animals (animals obviously) etc. if you then start your game and find lightswitches/walls not disappearing, loot corruption etc. you may need to delete Isoregions folder or better yet - goto backup and start over! I will not troubleshoot every individual users issues so please expect trial and error.

(RECOMMENDED) If you only care about having a fresh map while carrying over player and safehouse data then it is as simple as deleting the contents of your map folder and replacing it with your processed files from the tool.

To reset zombie populations delete the zpop folder.

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