
PSD to TIFF
Write a PSD out as a TIFF. TIFF has room for more than one image per file, and what lands in this one is the flat composite alone.
PSD to TIFF writes the flattened composite as one image directory, big-endian and uncompressed, four bytes for every pixel. TIFF is the one target on this list Photoshop itself uses for layered files, and this writer does not use it that way. The result outweighs the PSD, and nothing inside comes apart again.
Questions
Do I get my layers back in TIFF?
No. The same flattened composite psd-to-png reads is what lands in the TIFF. TIFF can hold more than one image per file, but only the single flat composite is written here, not separate layers.
What is preserved?
The full pixel data and any transparency in the composite. What is not preserved is anything PSD-specific: layer names, blend modes, adjustment layers, none of which exist once the file is a flat pixel buffer.
Which engine handles this?
ag-psd decodes the composite and utif2 encodes the TIFF. Both run in Node, on the command line, through MCP and in the browser identically, and a PSD saved without Maximize Compatibility is refused on every surface the same way.
What size should I expect?
TIFF here is written uncompressed, so the file lands close to width times height times the pixel depth, often larger than the source PSD depending on how much the PSD itself compressed.
What is the reverse page?
There is none. Nothing in this matrix converts TIFF to PSD, since PSD is not one of the encodable formats here.