Cutting notes

The tool settles the arithmetic — where each boundary falls, which column keeps the spare pixel, what every tile measures before a byte is written. These notes cover the half it cannot settle: what happens to the pieces once they leave this machine.

Both are written against the same destination, because that is where the tiles from this site mostly go and because it is the destination that re-encodes them. Neither is a tour of the interface. If a note tells you to change the framing rather than the grid, that is the finding, not a preamble to one.

Two notes, in the order you need them

• A grid that survives the feedWhere to leave room before the cut, measured against the gutter the profile draws and the compression the platform applies on its way in.Read it before you frame the picture.
• Posting order for a nine-tile gridWhy nine tiles go up in reverse, what a stray post in the middle of the sequence does to the arrangement, and how to rescue a grid that is already three tiles in.Read it after the ZIP has landed.

What is not written here yet

There is nothing on carousel slides or poster tiling, because neither is built. A note explaining how to lay an A2 print across A4 sheets would be advice about a tool this site does not have, and a page like that earns traffic it cannot serve. When the sheets ship, the note ships with them.

The same applies to the things the splitter refuses on purpose — joining tiles back into one picture, hitting a target file size, stamping a mark across a set. Those are listed on the scope page with the reasoning, which is a shorter read than a guide pretending otherwise.