What Image File Formats Can Be Watermarked?

Image watermarking only works with JPG (*.jpg/*.jpeg) and TIFF (*.tiff) images. See below for the full details.

All file extensions must be in lowercase.

JPG (*.jpg/*.jpeg)

The chief advantage of JPGs is that they support a high-quality image in a relatively small file size (Rezolve watermarking has a file size limit of 150MB). When working with JPG files, try to use minimal compression when saving the image – 100% quality works best.

Advanced image details:

Supported Bits (per channel) 8 or 16 (8 preferred)
Supported Color Models (more info) RGB only
Supported Compression Methods Baseline/Standard
Baseline Optimized
Progressive

TIFF (*.tiff)

TIFFs are often a lot bigger (in terms of file size) than JPG files, but they have the advantage of supporting the CMYK color model, which is used by commercial printers.

Advanced image details:

Supported Bits (per channel) 8 only (16 or 32 are not supported)
Supported Color Models (more info) RGB or CMYK
Supported Compression Methods LZW (recommended)
ZIP
None
Supported Pixel Order Interleaved
Per Channel
Supported Byte Order IBM PC
Macintosh
Layer Compression Discard all layers (in order to ‘flatten’ the image)