> For the complete documentation index, see [llms.txt](https://stitchit.mouse.vision/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stitchit.mouse.vision/advanced-usage/useful-tools.md).

# Useful StitchIt functions

StitchIt provides the following useful tools (partial list)

* `stitchit.tools.writeSignedTiff` -- general-purpose signed TIFF writer
* `mergeChannels` -- Combine two channels to create a new one by adding them, subtracting then, dividing one from the other, etc.
* `stitchit.sampleSplitter` can be used to crop whole stacks to save disk space or to split up acquisitions where more than one sample was imaged.