TileOffsets, TileWidth, TileByteCounts and TileLength tags must exist for tiled images
With an Hexadecimal Editor (e.g. HxD) remove some of the mandatory tags.
The TileOffsets tag id is 324 (hex 0x0144
).
The TileByteCounts tag id is 325 (hex 0x0145
).
The TileWidth tag id is 322 (hex 0x0142
).
The TileLength tag id is 323 (hex 0x0143
).
A tag deletion can be also simulated by changing the tag id of some existing tag.