To package a text file into a 7z archive, you can use standard archival tools or online converters:

: Right-click your text file (e.g., Ophoto.txt ), select 7-Zip > Add to archive... , and set the archive name to Ophoto.7z . [32]

: Place an image "inside" a large text font by creating a text layer, placing your photo above it, and selecting Create Clipping Mask . [5.26] 4. Create a 7z Archive via Code

If you are automating this process, you can use PowerShell to generate an archive from a list of files specified in a text document. [5.10]

This creates a new image file that can be opened normally as a photo or opened with 7-Zip to reveal the hidden text. [5.3] 3. Create "Text-Style" Photos

If your goal is to hide a text message inside an actual photo file (resulting in an image that looks normal but contains hidden data), you can use the command prompt: